Thursday 3 February 2011

snowy leopards

The Ocelot is also known as the Painted Leopard, McKenney's Wildcat,is distributed over South and Central America and Mexico, but has been reported as far north as Texas and in Trinidad, in the Caribbean. North of Mexico, it is only found regularly in the extreme southern part of Texas, although there are rare sightings in Southern Arizona.
 
The Ocelot is similar in appearance to a domestic cat. Its fur resembles that of a Clouded Leopard or Jaguar and was once regarded as particularly valuable. As a result, hundreds of thousands of Ocelots were once killed for their fur. The feline was classified a "vulnerable" endangered species from 1972 until 1996, but is now rated "least concern" by the 2008 IUCN Red List.
 
The name ocelot comes from the Nahuatl word ōcēlōtl (pronounced , which usually refers to the Jaguar (Panthera onca) rather than the Ocelot.
The Ocelot ranges from 68 to 100 centimetres (27 to 39 in) in length, plus 26 to 45 centimetres (10 to 18 in) tail length, and typically weighs 8 to 10 kilograms (18 to 22 lb), although much larger individuals have occasionally been recorded, making it the largest of the generally dainty Leopardus wild cat genus. It has sleek fur, rounded ears and relatively large front paws. While similar in appearance to the Oncilla and Margay, which inhabit the same region, the Ocelot is larger.
 
It has the lowest resting body temperature of any feline.
 
The coat pattern of ocelots is relatively variable, being anything from cream to reddish-brown in color, or sometimes grey, and marked with black spots and rosettes. In many individuals, some of the spots, especially on the back, blend together to form irregular stripes or bands. The fur is short, and pale or white beneath. There are also single white spots, called ocelli, on the backs of the ears, and there are two black lines on either side of the face. It has a black-banded tail
The Ocelot is mostly nocturnal and very territorial. It will fight fiercely, sometimes to the death, in territorial disputes. In addition, the cat marks its territory with especially pungent urine. Like most felines, it is solitary, usually meeting only to mate. However, during the day it rests in trees or other dense foliage, and will occasionally share its spot with another Ocelot of the same sex. Males occupy territories of 3.5 to 46 square kilometres (1.4 to 18 sq mi), while females occupy smaller, non-overlapping territories of 0.8 to 15 square kilometres (0.31 to 5.8 sq mi). Territories are marked by urine spraying and by leaving feces in prominent locations, sometimes favoring particular latrine sites.
 
The Ocelot will sometimes take to the trees.
 
Ocelots hunt over a range of 18 km2 (7 sq mi), taking mostly small mammals (deer, various rodents), reptiles and amphibians (lizards, turtles and frogs), crab, birds and fish. Almost all of the prey that the Ocelot hunts is far smaller than itself, with rodents, rabbits, and opposums forming the largest part of the diet. Studies suggest that it follows and finds prey via odor trails, but the Ocelot also has very good vision, including night vision. The white rings around the Ocelot's eyes help to reflect extra light into the eye at night.
Ocelots typically breed only once every other year, although the female may mate again shortly after losing a litter. Mating can occur at any time of year, and estrus lasts from seven to ten days. After mating, the female will find a den in a cave in a rocky bluff, a hollow tree, or a dense (preferably thorny) thicket. Gestation lasts 79 to 82 days, and usually results in the birth of only a single kitten, with its eyes closed and a thin covering of hair. Litters of two or three kittens also occur, but are less common. The small litter size and relative infrequency of breeding make the ocelot particularly vulnerable to population loss.
 
Compared with other small cats, ocelot kittens grow quite slowly. They weigh around 250 grams (8.8 oz) at birth, and do not open their eyes for fifteen to eighteen days. They begin to leave the den at three months, but remain with their mother for up to two years, before dispersing to establish their own territory. Ocelots live for up to twenty years in captivity.
 
The Ocelot is distributed over South and Central America and Mexico, but has been reported as far north as Texas and in Trinidad, in the Caribbean. Countries in this range are: Argentina, Belize, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Guyana, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Nicaragua, Suriname, United States and Venezuela. It's likely extinct in Uruguay.
 
The Ocelot once inhabited chaparral thickets of the Gulf Coast of south and eastern Texas, and could be found in Arizona, Louisiana, and Arkansas. In the United States, it now ranges only in several small areas of dense thicket in South Texas and is rarely sighted in Arizona. On November 7, 2009, an ocelot was photographed in the mountains of Cochise County, Arizona. This is the first such verifiable evidence of the feline's presence in the state.
 
The Ocelot's continued presence in the U.S. is questionable, as a result largely of the introduction of dogs, being shot by ranchers, the loss of habitat, and the introduction of highways. Young male Ocelots are frequently killed by cars during their search for a territory. The feline was classified a "vulnerable" endangered species from 1972 till 1996, but is now rated "least concern" by the 2008 IUCN Red List.
 
Ocelots only inhabit areas with relatively dense vegetation cover, although they may occasionally hunt in more open areas at night. They are found in tropical forest, thorn forest, mangrove swamps and savanna, at elevations ranging up to 1,200 metres (3,900 ft).
The snow leopard (Uncia uncia) is a moderately large cat native to the mountain ranges of Central Asia. The classification of this species has been subject to change and its exact taxonomic position will not be resolved until further studies are conducted.
 
Snow leopards live between 3,000 and 5,500 metres (9,800 and 18,000 ft) above sea level in the rocky mountain ranges of Central Asia. However, their secretive nature means that their exact numbers are unknown, although it has been estimated that between 3,500 and 7,000 snow leopards exist in the wild and between 600 and 700 in zoos worldwide.
 
Snow leopards are smaller than the other big cats, but like them, exhibit a range of sizes, generally weighing between 27 and 54 kilograms (60 and 120 lb). Body length ranges from 75 to 130 centimetres (30 to 50 in), with a tail of 75 to 90 percent of that length.
 
Snow leopards have long thick fur, the base colour of which varies from smoky grey to yellowish tan, with whitish underparts. They have dark grey to black open rosettes on their body with small spots of the same color on their heads and larger spots on their legs and tail. Unusually among cats, their eyes are pale green or grey in colour.
 
Snow leopards show several adaptations for living in a cold mountainous environment. Their bodies are stocky, their fur is thick, and their ears are small and rounded, all of which help to minimize heat loss. Their feet are wide, which distributes their weight better for walking on snow, and they have fur on their undersides to increase their traction on steep and unstable surfaces, as well as to assist with minimizing heat loss. Snow leopards' tails are long , flexible, helping them to maintain their balance which is very important in the rocky terrain they inhabit, the tails are also very thick due to storage of fats, and are also very thickly covered with fur which, apart from minimizing heat loss, allows them to be used like a blanket to protect their faces when asleep.
 
The snow leopard has a short muzzle and domed forehead, containing unusual large nasal cavities that help the animal breathe the thin cold air of their mountainous environment.
 
Snow leopards cannot roar, despite possessing some ossification of the hyoid bone. The presence of this ossification was previously thought to be essential for allowing the big cats to roar, but new studies show that the ability to roar is due to other morphological features, especially of the larynx, which are absent in the snow leopard. Snow leopard vocalizations include hisses, chuffing, mews, growls, and wailing.
 
In the past, many taxonomists included the snow leopard in the genus Panthera, together with the other largest extant felids, but later it was placed in its own genus, Uncia. It was thought not to be closely related to the leopard (Panthera pardus). However, a recent molecular study would place the species firmly within the genus Panthera, with its closest relative being the tiger (Panthera tigris), although its exact position remains unclear, and many sources still treat it as Uncia pending further studies.
 
A few subspecies have been proposed for animals living in different geographical regions. With the possible exception of U. u. baikalensis-romanii which requires further evaluation, these subspecies were generally not considered valid.However, the Handbook of the Mammals of the World recognizes two subspecies: U. u. uncia, from central Asia northwestwards to Mongolia and Russia; and U. u. uncioides in western China and the Himalayas
Both the Latinised genus name Uncia and the occasional English name "ounce" are derived from the Old French once, originally used for the European lynx. "Once" itself is believed to have arisen by back-formation from an earlier word "lonce" – the "L" of "lonce" was construed as an abbreviated "le" ("the"), leaving "once" to be perceived as the animal's name. This, like the English version "ounce", became used for other lynx-sized cats, and eventually for the snow-leopard.
 
The snow leopard is also known in its native lands as shan or "snow cheetah
The snow leopard's range in central and south Asia is rugged mountainous regions of approximately 1,230,000 square kilometres (470,000 sq mi), which extends through twelve countries: Afghanistan, Bhutan, China, India, Kazakhstan, the Kyrgyz Republic, Mongolia, Nepal, Pakistan, Russia, Tajikistan, and Uzbekistan.
 
The geographic distribution runs from the Hindukush in eastern Afghanistan and the Syr Darya through the mountains of Pamir Mountains, Tian Shan, Karakoram, Kashmir, Kunlun, and the Himalaya to southern Siberia, where the range covers the Russian Altai mountains, Sajan, Tannu-Ola mountains and the mountains to the west of Lake Baikal. In Mongolia it is found in the Mongolian and Gobi Altai and the Khangai Mountains. In Tibet it is found up to the Altyn-Tagh in the North
In summer, the snow leopard usually lives above the tree line on mountainous meadows and in rocky regions at an altitude from 2,700 to 6,000 m (8,900 to 20,000 ft). In winter, it comes down into the forests to an altitude of around 1,200 to 2,000 m (3,900 to 6,600 ft). They prefer broken terrain and can travel without difficulty in snow up to 85 centimetres (33 in) deep, although they prefer to use existing trails made by other animals.
 
It leads a largely solitary life, although mothers may rear cubs for extended periods of time in dens in the mountains.
 
An individual snow leopard lives within a well defined home range but does not defend its territory aggressively when encroached upon by other snow leopards. Home ranges vary greatly in size. In Nepal, where prey is abundant, a home range may be as small as 12 km2 (5 sq mi) to 40 km2 (15 sq mi) and up to five to ten animals are found here per 100 km2 (40 sq mi); whereas in habitats with sparse prey, an area of 1,000 km2 (400 sq mi) supports only five of these cats.
 
Like other cats, snow leopards use scent marks to indicate their territory and common travel routes. These are most commonly produced by scraping the ground with the hind feet before depositing urine or scat, but they also spray urine onto sheltered patches of rock.
 
Snow leopards are crepuscular, being most active at dawn and dusk. They are known for being extremely secretive and well camouflaged.
 
Leopards are carnivores and actively hunt their prey. However, like all cats, they are opportunistic feeders, eating whatever meat they can find including carrion and domestic livestock. They are capable of killing animals three times their size but will readily take much smaller prey such as hares and birds. While unusual among most cats, snow leopards also eat a significant amount of vegetation, including grass and twigs.
 
The diet of the snow leopard varies across its range and with the time of year, and is dependent on prey availability. In the Himalayas it preys mostly on bharals (Himalayan blue sheep) but in other mountain ranges such as the Karakoram, Tian Shan, and Altai, its main prey consists of Siberian ibex and argali, a type of wild sheep, although this has become rarer in some parts of the snow leopard's range. Other large animals eaten include various types of wild goats and sheep (such as markhors and urials), other goat-like ruminants such as Himalayan tahr and gorals, plus deer, boars, and langur monkeys. Smaller prey consists of marmots, woolly hares, pikas, various rodents, and birds such as the snow cock and chukar.
 
It is not averse to taking domestic livestock, which brings it into direct conflict with humans. Herders will kill snow leopards to prevent them from taking their animals. However, snow leopards have not been reported to attack humans, and appear to be among the least aggressive of all the big cats. As a result, they are easily driven away from livestock, readily abandon their kills when threatened, and may not even defend themselves when attacked.
 
Snow leopards prefer to ambush prey from above, using broken terrain to conceal their approach, and can leap as far as 14 meters (46 ft).They will actively pursue prey down steep mountainsides, using the momentum of their initial leap to chase animals for up to 300 metres (980 ft). They kill with a bite to the neck, and may drag the prey to a safe location before feeding. They consume all edible parts of the carcass, and can survive on a single bharal for up to two weeks before hunting again.
 
Snow leopards usually mate in late winter and have a gestation period of 90–100 days, so that the cubs are born between April and June. Oestrus typically lasts from five to eight days, and males tend not to seek out another partner after mating, probably because the short mating season does not allow sufficient time to reliably do so. Paired snow leopards mate in the usual felid posture, from twelve to thirty six times a day.
 
The mother gives birth in a rocky den lined with fur shed from her underside. Litter sizes vary from one to five cubs but two or three is more usual. The cubs are blind and helpless at birth, although already with a thick coat of fur, and they weigh from 320 to 567 grams (11 to 20.0 oz). The eyes open at around seven days, and the cubs able to walk at five weeks and are fully weaned by ten weeks.
 
The cubs leave the den at around two to four months of age, but remain with their mother until they become independent after around 18–22 months. Once independent, they may disperse over considerable distances, even crossing wide expanses of flat terrain to seek out new hunting grounds. This likely helps reduce the inbreeding that would otherwise be common in their relatively isolated environment. Snow leopards become sexually mature at two to three years, and normally live for 15–18 years, although they may live for up to 21 years in captivity.
The total wild population of the snow leopard was estimated at only 4,080 to 6,590 individuals by McCarthy et al. 2003 (see table below). Many of these estimates are rough and outdated.
 
In 1972 the International Union for Conservation of Nature (IUCN) placed the snow leopard on its Red List of Threatened Species as globally "Endangered"; the same threat category was applied in the assessment conducted in 2008.
 
There are also 600-700 snow leopards in zoos around the world
There are numerous agencies working to conserve the snow leopard and its threatened mountain ecosystems. These include the Snow Leopard Trust, the Snow Leopard Conservancy and the Snow Leopard Network. These groups and numerous national governments from the snow leopard's range, non-profits and donors from around the world recently worked together at the 10th International Snow Leopard Conference in Beijing. Their focus on research, community programs in snow leopard regions and education programs are aimed at understanding the cat's needs as well as the needs of the villagers and herder communities impacting snow leopards' lives and habitat.

ocelot

The Ocelot is also known as the Painted Leopard, McKenney's Wildcat,is distributed over South and Central America and Mexico, but has been reported as far north as Texas and in Trinidad, in the Caribbean. North of Mexico, it is only found regularly in the extreme southern part of Texas, although there are rare sightings in Southern Arizona.
 
The Ocelot is similar in appearance to a domestic cat. Its fur resembles that of a Clouded Leopard or Jaguar and was once regarded as particularly valuable. As a result, hundreds of thousands of Ocelots were once killed for their fur. The feline was classified a "vulnerable" endangered species from 1972 until 1996, but is now rated "least concern" by the 2008 IUCN Red List.
 
The name ocelot comes from the Nahuatl word ōcēlōtl (pronounced , which usually refers to the Jaguar (Panthera onca) rather than the Ocelot.
The Ocelot ranges from 68 to 100 centimetres (27 to 39 in) in length, plus 26 to 45 centimetres (10 to 18 in) tail length, and typically weighs 8 to 10 kilograms (18 to 22 lb), although much larger individuals have occasionally been recorded, making it the largest of the generally dainty Leopardus wild cat genus. It has sleek fur, rounded ears and relatively large front paws. While similar in appearance to the Oncilla and Margay, which inhabit the same region, the Ocelot is larger.
 
It has the lowest resting body temperature of any feline.
 
The coat pattern of ocelots is relatively variable, being anything from cream to reddish-brown in color, or sometimes grey, and marked with black spots and rosettes. In many individuals, some of the spots, especially on the back, blend together to form irregular stripes or bands. The fur is short, and pale or white beneath. There are also single white spots, called ocelli, on the backs of the ears, and there are two black lines on either side of the face. It has a black-banded tail
The Ocelot is mostly nocturnal and very territorial. It will fight fiercely, sometimes to the death, in territorial disputes. In addition, the cat marks its territory with especially pungent urine. Like most felines, it is solitary, usually meeting only to mate. However, during the day it rests in trees or other dense foliage, and will occasionally share its spot with another Ocelot of the same sex. Males occupy territories of 3.5 to 46 square kilometres (1.4 to 18 sq mi), while females occupy smaller, non-overlapping territories of 0.8 to 15 square kilometres (0.31 to 5.8 sq mi). Territories are marked by urine spraying and by leaving feces in prominent locations, sometimes favoring particular latrine sites.
 
The Ocelot will sometimes take to the trees.
 
Ocelots hunt over a range of 18 km2 (7 sq mi), taking mostly small mammals (deer, various rodents), reptiles and amphibians (lizards, turtles and frogs), crab, birds and fish. Almost all of the prey that the Ocelot hunts is far smaller than itself, with rodents, rabbits, and opposums forming the largest part of the diet. Studies suggest that it follows and finds prey via odor trails, but the Ocelot also has very good vision, including night vision. The white rings around the Ocelot's eyes help to reflect extra light into the eye at night.
Ocelots typically breed only once every other year, although the female may mate again shortly after losing a litter. Mating can occur at any time of year, and estrus lasts from seven to ten days. After mating, the female will find a den in a cave in a rocky bluff, a hollow tree, or a dense (preferably thorny) thicket. Gestation lasts 79 to 82 days, and usually results in the birth of only a single kitten, with its eyes closed and a thin covering of hair. Litters of two or three kittens also occur, but are less common. The small litter size and relative infrequency of breeding make the ocelot particularly vulnerable to population loss.
 
Compared with other small cats, ocelot kittens grow quite slowly. They weigh around 250 grams (8.8 oz) at birth, and do not open their eyes for fifteen to eighteen days. They begin to leave the den at three months, but remain with their mother for up to two years, before dispersing to establish their own territory. Ocelots live for up to twenty years in captivity.
 
The Ocelot is distributed over South and Central America and Mexico, but has been reported as far north as Texas and in Trinidad, in the Caribbean. Countries in this range are: Argentina, Belize, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Guyana, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Nicaragua, Suriname, United States and Venezuela. It's likely extinct in Uruguay.
 
The Ocelot once inhabited chaparral thickets of the Gulf Coast of south and eastern Texas, and could be found in Arizona, Louisiana, and Arkansas. In the United States, it now ranges only in several small areas of dense thicket in South Texas and is rarely sighted in Arizona. On November 7, 2009, an ocelot was photographed in the mountains of Cochise County, Arizona. This is the first such verifiable evidence of the feline's presence in the state.
 
The Ocelot's continued presence in the U.S. is questionable, as a result largely of the introduction of dogs, being shot by ranchers, the loss of habitat, and the introduction of highways. Young male Ocelots are frequently killed by cars during their search for a territory. The feline was classified a "vulnerable" endangered species from 1972 till 1996, but is now rated "least concern" by the 2008 IUCN Red List.
 
Ocelots only inhabit areas with relatively dense vegetation cover, although they may occasionally hunt in more open areas at night. They are found in tropical forest, thorn forest, mangrove swamps and savanna, at elevations ranging up to 1,200 metres (3,900 ft).
The snow leopard (Uncia uncia) is a moderately large cat native to the mountain ranges of Central Asia. The classification of this species has been subject to change and its exact taxonomic position will not be resolved until further studies are conducted.
 
Snow leopards live between 3,000 and 5,500 metres (9,800 and 18,000 ft) above sea level in the rocky mountain ranges of Central Asia. However, their secretive nature means that their exact numbers are unknown, although it has been estimated that between 3,500 and 7,000 snow leopards exist in the wild and between 600 and 700 in zoos worldwide.
 
Snow leopards are smaller than the other big cats, but like them, exhibit a range of sizes, generally weighing between 27 and 54 kilograms (60 and 120 lb). Body length ranges from 75 to 130 centimetres (30 to 50 in), with a tail of 75 to 90 percent of that length.
 
Snow leopards have long thick fur, the base colour of which varies from smoky grey to yellowish tan, with whitish underparts. They have dark grey to black open rosettes on their body with small spots of the same color on their heads and larger spots on their legs and tail. Unusually among cats, their eyes are pale green or grey in colour.
 
Snow leopards show several adaptations for living in a cold mountainous environment. Their bodies are stocky, their fur is thick, and their ears are small and rounded, all of which help to minimize heat loss. Their feet are wide, which distributes their weight better for walking on snow, and they have fur on their undersides to increase their traction on steep and unstable surfaces, as well as to assist with minimizing heat loss. Snow leopards' tails are long , flexible, helping them to maintain their balance which is very important in the rocky terrain they inhabit, the tails are also very thick due to storage of fats, and are also very thickly covered with fur which, apart from minimizing heat loss, allows them to be used like a blanket to protect their faces when asleep.
 
The snow leopard has a short muzzle and domed forehead, containing unusual large nasal cavities that help the animal breathe the thin cold air of their mountainous environment.
 
Snow leopards cannot roar, despite possessing some ossification of the hyoid bone. The presence of this ossification was previously thought to be essential for allowing the big cats to roar, but new studies show that the ability to roar is due to other morphological features, especially of the larynx, which are absent in the snow leopard. Snow leopard vocalizations include hisses, chuffing, mews, growls, and wailing.
 
In the past, many taxonomists included the snow leopard in the genus Panthera, together with the other largest extant felids, but later it was placed in its own genus, Uncia. It was thought not to be closely related to the leopard (Panthera pardus). However, a recent molecular study would place the species firmly within the genus Panthera, with its closest relative being the tiger (Panthera tigris), although its exact position remains unclear, and many sources still treat it as Uncia pending further studies.
 
A few subspecies have been proposed for animals living in different geographical regions. With the possible exception of U. u. baikalensis-romanii which requires further evaluation, these subspecies were generally not considered valid.However, the Handbook of the Mammals of the World recognizes two subspecies: U. u. uncia, from central Asia northwestwards to Mongolia and Russia; and U. u. uncioides in western China and the Himalayas
Both the Latinised genus name Uncia and the occasional English name "ounce" are derived from the Old French once, originally used for the European lynx. "Once" itself is believed to have arisen by back-formation from an earlier word "lonce" – the "L" of "lonce" was construed as an abbreviated "le" ("the"), leaving "once" to be perceived as the animal's name. This, like the English version "ounce", became used for other lynx-sized cats, and eventually for the snow-leopard.
 
The snow leopard is also known in its native lands as shan or "snow cheetah
The snow leopard's range in central and south Asia is rugged mountainous regions of approximately 1,230,000 square kilometres (470,000 sq mi), which extends through twelve countries: Afghanistan, Bhutan, China, India, Kazakhstan, the Kyrgyz Republic, Mongolia, Nepal, Pakistan, Russia, Tajikistan, and Uzbekistan.
 
The geographic distribution runs from the Hindukush in eastern Afghanistan and the Syr Darya through the mountains of Pamir Mountains, Tian Shan, Karakoram, Kashmir, Kunlun, and the Himalaya to southern Siberia, where the range covers the Russian Altai mountains, Sajan, Tannu-Ola mountains and the mountains to the west of Lake Baikal. In Mongolia it is found in the Mongolian and Gobi Altai and the Khangai Mountains. In Tibet it is found up to the Altyn-Tagh in the North
In summer, the snow leopard usually lives above the tree line on mountainous meadows and in rocky regions at an altitude from 2,700 to 6,000 m (8,900 to 20,000 ft). In winter, it comes down into the forests to an altitude of around 1,200 to 2,000 m (3,900 to 6,600 ft). They prefer broken terrain and can travel without difficulty in snow up to 85 centimetres (33 in) deep, although they prefer to use existing trails made by other animals.
 
It leads a largely solitary life, although mothers may rear cubs for extended periods of time in dens in the mountains.
 
An individual snow leopard lives within a well defined home range but does not defend its territory aggressively when encroached upon by other snow leopards. Home ranges vary greatly in size. In Nepal, where prey is abundant, a home range may be as small as 12 km2 (5 sq mi) to 40 km2 (15 sq mi) and up to five to ten animals are found here per 100 km2 (40 sq mi); whereas in habitats with sparse prey, an area of 1,000 km2 (400 sq mi) supports only five of these cats.
 
Like other cats, snow leopards use scent marks to indicate their territory and common travel routes. These are most commonly produced by scraping the ground with the hind feet before depositing urine or scat, but they also spray urine onto sheltered patches of rock.
 
Snow leopards are crepuscular, being most active at dawn and dusk. They are known for being extremely secretive and well camouflaged.
 
Leopards are carnivores and actively hunt their prey. However, like all cats, they are opportunistic feeders, eating whatever meat they can find including carrion and domestic livestock. They are capable of killing animals three times their size but will readily take much smaller prey such as hares and birds. While unusual among most cats, snow leopards also eat a significant amount of vegetation, including grass and twigs.
 
The diet of the snow leopard varies across its range and with the time of year, and is dependent on prey availability. In the Himalayas it preys mostly on bharals (Himalayan blue sheep) but in other mountain ranges such as the Karakoram, Tian Shan, and Altai, its main prey consists of Siberian ibex and argali, a type of wild sheep, although this has become rarer in some parts of the snow leopard's range. Other large animals eaten include various types of wild goats and sheep (such as markhors and urials), other goat-like ruminants such as Himalayan tahr and gorals, plus deer, boars, and langur monkeys. Smaller prey consists of marmots, woolly hares, pikas, various rodents, and birds such as the snow cock and chukar.
 
It is not averse to taking domestic livestock, which brings it into direct conflict with humans. Herders will kill snow leopards to prevent them from taking their animals. However, snow leopards have not been reported to attack humans, and appear to be among the least aggressive of all the big cats. As a result, they are easily driven away from livestock, readily abandon their kills when threatened, and may not even defend themselves when attacked.
 
Snow leopards prefer to ambush prey from above, using broken terrain to conceal their approach, and can leap as far as 14 meters (46 ft).They will actively pursue prey down steep mountainsides, using the momentum of their initial leap to chase animals for up to 300 metres (980 ft). They kill with a bite to the neck, and may drag the prey to a safe location before feeding. They consume all edible parts of the carcass, and can survive on a single bharal for up to two weeks before hunting again.
 
Snow leopards usually mate in late winter and have a gestation period of 90–100 days, so that the cubs are born between April and June. Oestrus typically lasts from five to eight days, and males tend not to seek out another partner after mating, probably because the short mating season does not allow sufficient time to reliably do so. Paired snow leopards mate in the usual felid posture, from twelve to thirty six times a day.
 
The mother gives birth in a rocky den lined with fur shed from her underside. Litter sizes vary from one to five cubs but two or three is more usual. The cubs are blind and helpless at birth, although already with a thick coat of fur, and they weigh from 320 to 567 grams (11 to 20.0 oz). The eyes open at around seven days, and the cubs able to walk at five weeks and are fully weaned by ten weeks.
 
The cubs leave the den at around two to four months of age, but remain with their mother until they become independent after around 18–22 months. Once independent, they may disperse over considerable distances, even crossing wide expanses of flat terrain to seek out new hunting grounds. This likely helps reduce the inbreeding that would otherwise be common in their relatively isolated environment. Snow leopards become sexually mature at two to three years, and normally live for 15–18 years, although they may live for up to 21 years in captivity.
The total wild population of the snow leopard was estimated at only 4,080 to 6,590 individuals by McCarthy et al. 2003 (see table below). Many of these estimates are rough and outdated.
 
In 1972 the International Union for Conservation of Nature (IUCN) placed the snow leopard on its Red List of Threatened Species as globally "Endangered"; the same threat category was applied in the assessment conducted in 2008.
 
There are also 600-700 snow leopards in zoos around the world
There are numerous agencies working to conserve the snow leopard and its threatened mountain ecosystems. These include the Snow Leopard Trust, the Snow Leopard Conservancy and the Snow Leopard Network. These groups and numerous national governments from the snow leopard's range, non-profits and donors from around the world recently worked together at the 10th International Snow Leopard Conference in Beijing. Their focus on research, community programs in snow leopard regions and education programs are aimed at understanding the cat's needs as well as the needs of the villagers and herder communities impacting snow leopards' lives and habitat.

cactii

cactus (plural: cacti or cactuses) is a member of the plant family Cactaceae, native to the Americas (with one exception, Rhipsalis baccifera, which is native to parts of the Old World). They are often used as ornamental plants, and some are also crop plants for fodder, forage, fruits, cochineal, and other uses. Numerous species have been used since ancient times by indigenous peoples for their psychedelic effects. Cacti are part of the plant order Caryophyllales, which also includes members like beets, gypsophila, spinach, amaranth, tumbleweeds, carnations, rhubarb, buckwheat, plumbago, bougainvillea, chickweed and knotgrass.
 
Cacti are unusual and distinctive plants, which are adapted to extremely arid and/or semi-arid hot environments, as well as tropical environments as epiphytes or hemi-epiphytes. They show a wide range of anatomical and physiological features which conserve water. Their stems have adapted to become photosynthetic and succulent, while the leaves have become the spines for which cacti are well known.
 
Cacti come in a wide range of shapes and sizes. The tallest is Pachycereus pringlei, with a maximum recorded height of 19.2 m,and the smallest is Blossfeldia liliputiana, only about 1 cm diameter at maturity. Cactus flowers are large, and like the spines and branches arise from areoles.
 
Cacti are perennial and grow as trees, shrubs, or vines. Most species are terrestrial, but there are also many epiphytic species, especially in the tribes Rhipsalideae and Hylocereeae. In most species, except for the sub-family Pereskioideae (see image), the leaves are greatly or entirely reduced. The leaves may also be tiny and deciduous as can be seen on new shoots of Opuntia. Spines grown by the cacti are actually modified leaves; the stems (the green "pads" of many cacti) have also evolved to photosynthesize. The study of when spines grow and how they can be used to tell the cactus' age is called acanthochronology. The flowers, mostly radially symmetrical and bisexual, bloom either by day or by night, depending on the species. Their shape varies from tube-like through bell-like to wheel-shaped, and their size from 0.2 to 15–30 centimetres. Most of them have numerous sepals (from 5 to 50 or more), and change form from outside to inside, from bracts to petals. They have stamens in great numbers (from 50 to 1,500, rarely fewer). Nearly all species of cacti have a bitter mucilaginous sap contained within them. The berry-like fruits may contain few to many (3,000), seeds, which can be between 0.4 and 12 mm long.
 
The life of a cactus is seldom longer than 300 years[citation needed], but may be as short as 25 years, (although these flower as early as their second year). The Saguaro cactus (Carnegiea gigantea) grows to a height of up to 15 metres (the record is 17 metres 67 cm), but in its first ten years, it grows only 10 centimeters. The "mother-in-law's cushion" (Echinocactus grusonii) reaches a height of 2.5 meters and a diameter of 1 metre and – at least on the Canaries – is already capable of flowering after 6 years. The diameter of cactus flowers ranges from 5 to 30 cm; the colors are often conspicuous and spectacular.
 
The cactus family is endemic to the Americas with one exception, Rhipsalis baccifera; this species has a pantropical distribution, occurring in the Old World tropical Africa, Madagascar and Sri Lanka as well as in tropical America. This plant is thought to be a relatively recent colonist in the Old World (within the last few thousand years), probably carried as seeds in the digestive tracts of migratory birds. Many other cacti have become naturalized to similar environments in other parts of the world after being introduced by people, e.g. Australia, Hawaii, and the Mediterranean region. The Tehuacán Valley of Mexico has one of the richest occurrences of cacti in the world. Species diversity decreases as one travels north; hundreds of species can be found in areas of Mexico, dozens of species are found in the Sonora and Mojave deserts of the southwestern U.S., and only several species are found in the eastern plains and dry valleys of Montana and Alberta.
 
Cacti are believed to have evolved in the last 30 to 40 million years[citation needed]. Long ago, the Americas were joined to the other continents, but separated due to continental drift. Unique species in the New World must have developed after the continents had moved apart or began developing just prior to the separation. Significant distance between the continents was only achieved in around the last 50 million years. This may explain why cacti are so rare in Africa as the continents had already separated when cacti evolved. Many succulent plants in both the Old and New World bear a striking resemblance to cacti, and are often called "cactus" in common usage.
 
Some environments, such as deserts, semi-deserts, and dry steppes, receive little water in the form of precipitation. Plants that inhabit these dry areas are known as xerophytes, and many of them are succulents, with thick or reduced, "succulent", leaves. Apart from a few exceptions (for example, the genus Pereskia) all cacti are succulent plants. Like other succulents, cacti have a range of specific adaptations that enable them to survive in these environments.
Cacti have never lost their leaves completely they have only reduced the size so that they reduce the surface area through which water can be lost by transpiration. In some species the leaves are still remarkably large and ordinary while in other species they have become microscopic but they still contain the stomata, xylem and phloem. Certain cactus species have also developed ephemeral or deciduous leaves, which are leaves that last for a short period of time when the stem is still in its early stages of development. A good example is Opuntia ficus-indica, better known as the prickly pear. Cacti have also developed spines which allow less water to evaporate through transpiration by shading the plant, and defend the cactus against water-seeking animals. The spines grow from specialized structures called areoles, homologous to the nodes on other plants. Very few members of the family have leaves, and when present these are usually rudimentary and soon fall off; they are typically awl-shaped and only 1–3 mm. long. Two genera, Pereskia and Pereskiopsis, do however retain large, non-succulent leaves 5–25 cm. long, and non-succulent stems. Pereskia has now been determined to be the ancestral genus from which all other cacti evolved. Enlarged stems carry out photosynthesis and store water. Unlike many other succulents, the stem is the only part of a true cactus where this takes place. Much like many other plants that have waxy coatings on their leaves, cacti often have a waxy coating on their stems to prevent water loss and potentially repel water from their stems.
 
The bodies of many cacti have become thickened during the course of evolution, and form water-retentive tissue and in many cases assume the optimal shape of a sphere or cylinder (combining highest possible volume with lowest possible surface area). By reducing its surface area, the body of the plant is also protected against excessive sunlight.
 
Most cacti have a short growing season and long dormancy. For example, a fully-grown Saguaro cactus (Carnegiea gigantea) can absorb up to 3,000 litres of water in ten days. This is helped by the ability to form new roots quickly. Two hours after rain following a relatively long drought, root formation begins in response to the moisture. Apart from a few exceptions, an extensively ramified root system is formed, which spreads out immediately beneath the surface. The salt concentration in the root cells is relatively high[citation needed], so that when moisture is encountered, water can immediately be absorbed in the greatest possible quantity.
 
But the plant body itself is also capable of absorbing moisture (through the epidermis and the thorns), which for plants that are exposed to moisture almost entirely or indeed in some cases solely, in the form of fog, is of the greatest importance for sustaining life.
 
Most cacti have very shallow roots that can spread out widely close to the surface of the ground to collect water, an adaptation to infrequent rains; in one examination, a young Saguaro only 12 cm. tall had a root system covering an area 2 meters in diameter, but with no roots more than 10 cm. deep.The larger columnar cacti also develop a taproot, primarily for anchoring but also to reach deeper water supplies and mineral nutrients.
 
One feature distinguishes the cacti from all other plants: cacti possess areoles, as they are known. The areole appears like a cushion with a diameter of up to 15 mm. and is formed by two opposing buds in the angles of a leaf[citation needed]. From the upper bud develops either a blossom or a side shoot, from the lower bud develop thorns. The two buds of the areoles can lie very close together, but they can also sometimes be separated by several centimeters.
 
Like other succulents in the families of the Crassulaceae, Agavaceae (agaves), Euphorbiaceae (euphorbias), Liliaceae (lilies), Orchidaceae (orchids) and Vitaceae (vines), cacti reduce water loss through transpiration by Crassulacean acid metabolism.Here, transpiration does not take place during the day at the same time as photosynthesis, but at night. The plant stores the carbon dioxide chemically linked to malic acid until the daytime. During the day the stomata are closed and the plant releases the stored CO2 and uses it for photosynthesis. Because transpiration takes place during the cool humid night hours, water loss through transpiration is significantly reduced.
 
Some cactus flowers form long tubes (up to 30 centimetres) so that only moths can reach the nectar and therefore pollinate the blossoms. There are also specializations for bats, hummingbirds and particular species of bees. The duration of flowering is very variable. Many flowers, for example those of Selenicereus grandiflorus (Queen of the Night) are only fully open for two hours at night. Other cacti flower for a whole week. Most cacti are self-incompatible, and thus require a pollinator. A few are autogamous and are able to pollinate themselves. Fraileas only open their flowers completely in exceptional circumstances; they mostly pollinate themselves or others with their flowers closed ("cleistogamy"). The flower itself has also undergone a further development: the ovary tends to become a completely protected area, protected by thorns, hairs and scales. Seed formation is very prolific, and the fruits are mostly fleshy, pleasant tasting and conspicuously coloured. Goats, birds, ants, mice and bats contribute significantly to the spreading of the seeds.
 
Because of the plants' high water-retention ability, detached parts of the plant can survive for long periods and are able to grow new roots anywhere on the plant body.
 
Among the remains of the Aztec civilization, cactus-like plants can be found in pictorial representations, sculpture and drawings, with many depictions resembling Echinocactus grusonii. Tenochtitlan (the earlier name of Mexico City) means "place of the sacred cactus." The coat of arms of Mexico to this day shows an eagle perched on a cactus while holding a snake, an image which is at the center of the Aztec origin myth.
 
Economic exploitation of the cactus can also be traced back to the Aztecs. The North American Indians utilize the alkaloid content of several cacti species for religious ceremonies. Today, besides their use as foodstuffs (jam, fruit, vegetables), their principal use is as a host for the cochineal insect, from which a red dye (carmine) is obtained which is used in Campari or high-quality lipsticks. Particularly in South America dead pillar cacti yield valuable wood for construction. Some cacti are also of pharmaceutical significance.
 
From the moment the early European explorers sighted them, cacti have aroused much interest: Christopher Columbus brought the first melocactus to Europe. Scientific interest in them began in the 17th century. By 1737, twenty-four species were known, which Linnaeus grouped together as the genus "Cactaceae".
 
From the beginning of the 20th century, interest in cacti has increased steadily. This was accompanied by a rising commercial interest, the negative consequences of which culminated in raids on their native habitats. Through the great number of cactus admirers, whether their interest is scientific or hobby-oriented, new species and varieties are even today discovered every year.
 
All cacti are covered by the Convention on International Trade in Endangered Species of Wild Fauna and Flora, and many species by virtue of their inclusion in Appendix 1 are fully protected.
 
Some countries have a rather contradictory attitude to species protection. In Mexico for example to be caught in the act of digging up cacti carries a prison sentence, but cactus habitats are destroyed for the construction of new roads and electricity lines.
 
The Moche people of ancient Peru worshipped agriculture and often depicted the cactus in their art
Cacti, cultivated by people worldwide, are a familiar sight as potted plants, houseplants or in ornamental gardens in warmer climates. They often form part of xeriphytic (dry) gardens in arid regions, or raised rockeries. Some countries, such as Australia, have water restrictions in many cities, so drought-resistant plants are increasing in popularity. Numerous species have entered widespread cultivation, including members of Echinopsis, Mammillaria and Cereus among others. Some, such as the Golden Barrel dekha Cactus, Echinocactus grusonii, are prominent in garden design. Cacti are commonly used for fencing material where there is a lack of either natural resources or financial means to construct a permanent fence. This is often seen in arid and warm climates, such as the Masai Mara in Kenya. This is known as a cactus fence. Cactus fences are often used by homeowners and landscape architects for home security purposes. The sharp thorns of the cactus deter unauthorized persons from entering private properties, and may prevent break-ins if planted under windows and near drainpipes. The aesthetic characteristics of some species, in conjunction with their home security qualities, makes them a considerable alternative to artificial fences and walls.
 
As well as garden plants, many cactus species have important commercial uses, some cacti bear edible fruit, such as the prickly pear and Hylocereus, which produces Dragon fruit or Pitaya. According to Reuters, the edible cactus, or nopal, industry in Mexico is worth $150 million each year and approximately 10,000 farmers cultivate the plant. Opuntia are also used as host plants for cochineal bugs in the cochineal dye industry in Central America.
 
The Peyote, Lophophora williamsii, is a well-known psychoactive agent used by Native Americans in the Southwest of the United States of America. Some species of Echinopsis (previously Trichocereus) also have psychoactive properties. For example, the San Pedro cactus, a common specimen found in many garden centers, is known to contain mescaline

fungality

Even though traditionally included in many botany curricula and textbooks, fungi are now thought to be more closely related to animals than to plants and are placed with the animals in the monophyletic group of opisthokonts. Analyses using molecular phylogenetics support a monophyletic origin of the Fungi. The taxonomy of the Fungi is in a state of constant flux, especially due to recent research based on DNA comparisons. These current phylogenetic analyses often overturn classifications based on older and sometimes less discriminative methods based on morphological features and biological species concepts obtained from experimental matings.
 
There is no unique generally accepted system at the higher taxonomic levels and there are frequent name changes at every level, from species upwards. Efforts among researchers are now underway to establish and encourage usage of a unified and more consistent nomenclature. Fungal species can also have multiple scientific names depending on their life cycle and mode (sexual or asexual) of reproduction. Web sites such as Index Fungorum and ITIS list current names of fungal species (with cross-references to older synonyms).
 
The  classification of Kingdom Fungi is the result of a large-scale collaborative research effort involving dozens of mycologists and other scientists working on fungal taxonomy.It recognizes seven phyla, two of which—the Ascomycota and the Basidiomycota—are contained within a branch representing subkingdom Dikarya. The below cladogram depicts the major fungal taxa and their relationship to opisthokont and unikont organisms. The lengths of the branches in this tree are not proportional to evolutionary distances.
 
The major phyla  of fungi have been classified mainly on the basis of characteristics of their sexual reproductive structures. Currently, seven phyla are proposed: Microsporidia, Chytridiomycota, Blastocladiomycota, Neocallimastigomycota, Glomeromycota, Ascomycota, and Basidiomycota
Phylogenetic analysis has demonstrated that the Microsporidia, unicellular parasites of animals and protists, are fairly recent and highly derived endobiotic fungi . One study concludes that the Microsporidia are a sister group to the true fungi, that is, they are each other's closest evolutionary relative. Hibbett and colleagues suggest that this analysis does not clash with their classification of the Fungi, and although the Microsporidia are elevated to phylum status, it is acknowledged that further analysis is required to clarify evolutionary relationships within this group.
 
The Chytridiomycota are commonly known as chytrids. These fungi are distributed worldwide. Chytrids produce zoospores that are capable of active movement through aqueous phases with a single flagellum, leading early taxonomists to classify them as protists. Molecular phylogenies, inferred from rRNA sequences in ribosomes, suggest that the Chytrids are a basal group divergent from the other fungal phyla, consisting of four major clades with suggestive evidence for paraphyly or possibly polyphyly.
 
The Blastocladiomycota were previously considered a taxonomic clade within the Chytridiomycota. Recent molecular data and ultrastructural characteristics, however, place the Blastocladiomycota as a sister clade to the Zygomycota, Glomeromycota, and Dikarya (Ascomycota and Basidiomycota). The blastocladiomycetes are saprotrophs, feeding on decomposing organic matter, and they are parasites of all eukaryotic groups. Unlike their close relatives, the chytrids, which mostly exhibit zygotic meiosis, the blastocladiomycetes undergo sporic meiosis.
 
The Neocallimastigomycota were earlier placed in the phylum Chytridomycota. Members of this small phylum are anaerobic organisms, living in the digestive system of larger herbivorous mammals and possibly in other terrestrial and aquatic environments. They lack mitochondria but contain hydrogenosomes of mitochondrial origin. As the related chrytrids, neocallimastigomycetes form zoospores that are posteriorly uniflagellate or polyflagellate.
 
Members of the Glomeromycota form arbuscular mycorrhizae, a form of symbiosis where fungal hyphae invade plant root cells and both species benefit from the resulting increased supply of nutrients. All known Glomeromycota species reproduce asexually. The symbiotic association between the Glomeromycota and plants is ancient, with evidence dating to 400 million years ago. Formerly part of the Zygomycota (commonly known as 'sugar' and 'pin' molds), the Glomeromycota were elevated to phylum status in 2001 and now replace the older phylum Zygomycota. Fungi that were placed in the Zygomycota are now being reassigned to the Glomeromycota, or the subphyla incertae sedis Mucoromycotina, Kickxellomycotina, the Zoopagomycotina and the Entomophthoromycotina.Some well-known examples of fungi formerly in the Zygomycota include black bread mold (Rhizopus stolonifer), and Pilobolus species, capable of ejecting spores several meters through the air. Medically relevant genera include Mucor, Rhizomucor, and Rhizopus.
 
The Ascomycota, commonly known as sac fungi or ascomycetes, constitute the largest taxonomic group within the Eumycota. These fungi form meiotic spores called ascospores, which are enclosed in a special sac-like structure called an ascus. This phylum includes morels, a few mushrooms and truffles, single-celled yeasts, and many filamentous fungi living as saprotrophs, parasites, and mutualistic symbionts. Prominent and important genera of filamentous ascomycetes include Aspergillus, Penicillium, Fusarium, and Claviceps. Many ascomycete species have only been observed undergoing asexual reproduction, but analysis of molecular data has often been able to identify their closest teleomorphs in the Ascomycota. Because the products of meiosis are retained within the sac-like ascus, ascomycetes have been used for elucidating principles of genetics and heredity .
 
Members of the Basidiomycota, commonly known as the club fungi or basidiomycetes, produce meiospores called basidiospores on club-like stalks called basidia. Most common mushrooms belong to this group, as well as rust and smut fungi, which are major pathogens of grains. Other important basidiomycetes include the maize pathogen Ustilago maydis, human commensal species of the genus Malassezia, and the opportunistic human pathogen, Cryptococcus neoformans.
 
Because of similarities in morphology and lifestyle, the slime molds  and water molds  were formerly classified in the kingdom Fungi. Unlike true fungi the cell walls of these organisms contain cellulose and lack chitin. Slime molds are unikonts like fungi, but are grouped in the Amoebozoa. Water molds are diploid bikonts, grouped in the Chromalveolate kingdom. Neither water molds nor slime molds are closely related to the true fungi, and, therefore, taxonomists no longer group them in the kingdom Fungi. Nonetheless, studies of the oomycetes and myxomycetes are still often included in mycology textbooks and primary research literature.
 
The nucleariids, currently grouped in the Choanozoa, may be a sister group to the eumycete clade, and as such could be included in an expanded fungal kingdom.
Because of similarities in morphology and lifestyle, the slime molds and water molds  were formerly classified in the kingdom Fungi. Unlike true fungi the cell walls of these organisms contain cellulose and lack chitin. Slime molds are unikonts like fungi, but are grouped in the Amoebozoa. Water molds are diploid bikonts, grouped in the Chromalveolate kingdom. Neither water molds nor slime molds are closely related to the true fungi, and, therefore, taxonomists no longer group them in the kingdom Fungi. Nonetheless, studies of the oomycetes and myxomycetes are still often included in mycology textbooks and primary research literature.
 
The nucleariids, currently grouped in the Choanozoa, may be a sister group to the eumycete clade, and as such could be included in an expanded fungal kingdom
The mycorrhizal symbiosis is ancient, dating to at least 400 million years ago. It often increases the plant's uptake of inorganic compounds, such as nitrate and phosphate from soils having low concentrations of these key plant nutrients. The fungal partners may also mediate plant-to-plant transfer of carbohydrates and other nutrients. Such mycorrhizal communities are called "common mycorrhizal networks". A special case of mycorrhiza is myco-heterotrophy, whereby the plant parasitizes the fungus, obtaining all of its nutrients from its fungal symbiont. Some fungal species inhabit the tissues inside roots, stems, and leaves, in which case they are called endophytes.Similar to mycorrhiza, endophytic colonization by fungi may benefit both symbionts; for example, endophytes of grasses impart to their host increased resistance to herbivores and other environmental stresses and receive food and shelter from the plant in return.
The Lichens are formed by a symbiotic relationship between algae or cyanobacteria and fungi , in which individual photobiont cells are embedded in a tissue formed by the fungus. Lichens occur in every ecosystem on all continents, play a key role in soil formation and the initiation of biological succession, and are the dominating life forms in extreme environments, including polar, alpine, and semiarid desert regions. They are able to grow on inhospitable surfaces, including bare soil, rocks, tree bark, wood, shells, barnacles and leaves. As in mycorrhizas, the photobiont provides sugars and other carbohydrates via photosynthesis, while the fungus provides minerals and water. The functions of both symbiotic organisms are so closely intertwined that they function almost as a single organism; in most cases the resulting organism differs greatly from the individual components. Lichenization is a common mode of nutrition; around 20% of fungi—between 17,500 and 20,000 described species—are lichenized. Characteristics common to most lichens include obtaining organic carbon by photosynthesis, slow growth, small size, long life, long-lasting  vegetative reproductive structures, mineral nutrition obtained largely from airborne sources, and greater tolerance of desiccation than most other photosynthetic organisms in the same habitat.
Many insects also engage in mutualistic relationships with fungi. Several groups of ants cultivate fungi in the order Agaricales as their primary food source, while ambrosia beetles cultivate various species of fungi in the bark of trees that they infest.Similarly, females of several wood wasp species  inject their eggs together with spores of the wood-rotting fungus Amylostereum areolatum into the sapwood of pine trees; the growth of the fungus provides ideal nutritional conditions for the development of the wasp larvae. Termites on the African savannah are also known to cultivate fungi, and yeasts of the genera Candida and Lachancea inhabit the gut of a wide range of insects, including neuropterans, beetles, and cockroaches; it is not known whether these fungi benefit their hosts.
Many fungi are parasites on plants, animals (including humans), and other fungi. Serious pathogens of many cultivated plants causing extensive damage and losses to agriculture and forestry include the rice blast fungus Magnaporthe oryzae, tree pathogens such as Ophiostoma ulmi and Ophiostoma novo-ulmi causing Dutch elm disease,and Cryphonectria parasitica responsible for chestnut blight, and plant pathogens in the genera Fusarium, Ustilago, Alternaria, and Cochliobolus. Some carnivorous fungi, like Paecilomyces lilacinus, are predators of nematodes, which they capture using an array of specialized structures such as constricting rings or adhesive nets.
 
Some fungi can cause serious diseases in humans, several of which may be fatal if untreated. These include aspergilloses, candidoses, coccidioidomycosis, cryptococcosis, histoplasmosis, mycetomas, and paracoccidioidomycosis. Furthermore, persons with immuno-deficiencies are particularly susceptible to disease by genera such as Aspergillus, Candida, Cryptoccocus, Histoplasma, and Pneumocystis. Other fungi can attack eyes, nails, hair, and especially skin, the so-called dermatophytic and keratinophilic fungi, and cause local infections such as ringworm and athlete’s foot. Fungal spores are also a cause of allergies, and fungi from different taxonomic groups can evoke allergic reactions
The human use of fungi for food preparation or preservation and other purposes is extensive and has a long history. Mushroom farming and mushroom gathering are large industries in many countries. The study of the historical uses and sociological impact of fungi is known as ethnomycology. Because of the capacity of this group to produce an enormous range of natural products with antimicrobial or other biological activities, many species have long been used or are being developed for industrial production of antibiotics, vitamins, and anti-cancer and cholesterol-lowering drugs. More recently, methods have been developed for genetic engineering of fungi,enabling metabolic engineering of fungal species. For example, genetic modification of yeast species—which are easy to grow at fast rates in large fermentation vessels—has opened up ways of pharmaceutical production that are potentially more efficient than production by the original source organisms
Many species produce metabolites that are major sources of pharmacologically active drugs. Particularly important are the antibiotics, including the penicillins, a structurally related group of β-lactam antibiotics that are synthesized from small peptides. Although naturally occurring penicillins such as penicillin G  have a relatively narrow spectrum of biological activity, a wide range of other penicillins can be produced by chemical modification of the natural penicillins. Modern penicillins are semisynthetic compounds, obtained initially from fermentation cultures, but then structurally altered for specific desirable properties. Other antibiotics produced by fungi include: ciclosporin, commonly used as an immunosuppressant during transplant surgery; and fusidic acid, used to help control infection from methicillin-resistant Staphylococcus aureus bacteria. Widespread use of these antibiotics for the treatment of bacterial diseases, such as tuberculosis, syphilis, leprosy, and many others began in the early 20th century and continues to play a major part in anti-bacterial chemotherapy. In nature, antibiotics of fungal or bacterial origin appear to play a dual role: at high concentrations they act as chemical defense against competition with other microorganisms in species-rich environments, such as the rhizosphere, and at low concentrations as quorum-sensing molecules for intra- or interspecies signaling.
 
Other drugs produced by fungi include griseofulvin isolated from Penicillium griseofulvum, used to treat fungal infections, and statins , used to inhibit cholesterol synthesis. Examples of statins found in fungi include mevastatin from Penicillium citrinum and lovastatin from Aspergillus terreus and the oyster mushroom
 

nigntbirds

Nightjars are medium-sized nocturnal or crepuscular birds with long wings, short legs and very short bills. They are sometimes referred to as goatsuckers from the mistaken belief that they suck milk from goats . Some New World species are named as nighthawks. Nightjars usually nest on the ground.
 
Nightjars are found around the world. They are mostly active in the late evening and early morning or at night, and feed predominantly on moths and other large flying insects.
 
Most have small feet, of little use for walking, and long pointed wings. Their soft plumage is cryptically coloured to resemble bark or leaves. Some species, unusual for birds, perch along a branch, rather than across it. This helps to conceal them during the day. Bracken is their preferred habitat.
 
The Common Poorwill, Phalaenoptilus nuttallii is unique as a bird that undergoes a form of hibernation, becoming torpid and with a much reduced body temperature for weeks or months, although other nightjars can enter a state of torpor for shorter periods.
 
Nightjars lay one or two patterned eggs directly onto bare ground. It has been suggested that nightjars will move their eggs and chicks from the nesting site in the event of danger by carrying them in their mouths. This suggestion has been repeated many times in ornithology books, but while this may accidentally happen, surveys of nightjar research have found very little evidence to support this idea
Working out conservation strategies for some species of nightjar presents a particular challenge common to other hard-to-see families of birds; in a few cases, humans do not have enough data on whether a bird is rare or not. This has nothing to do with any lack of effort. It reflects, rather, the difficulty in locating and identifying a small number of those species of birds among the 10,000 or so that existing in the world, given the limitations of human beings. A perfect example is eh Vaurie's Nightjar in China's south-western Xinjiang. It has been seen for sure only once, in 1929, a specimen that was held in the hand. Surveys in the 1970s and 1990s failed to find it.It is perfectly possible that it has evolved as a species that can only really be identified in the wild by other Vaurie's Nightjars, rather than by humans. As a result, scientists do not know whether it is extinct, endangered, or even locally common. Humans must always remember that birds have not been designed for humans to see and identify them. The fact that humans can see and identify them is merely a happy accident.
 
Traditionally, nightjars have been divided into two subfamilies: the Caprimulginae, or typical nightjars with about 70 species, and the Chordeilinae, or nighthawks of the New World with about 9 species. The two groups are similar in most respects, but the typical nightjars have rictal bristles, longer bills, and softer plumage. In their pioneering DNA-DNA hybridisation work, Sibley and Ahlquist found that the genetic difference between the eared-nightjars and the typical nightjars was, in fact, greater than that between the typical nightjars and the nighthawks of the New World. Accordingly, they placed the eared-nightjars in a separate family: Eurostopodidae.
 
Subsequent work, both morphological and genetic, has provided support for the separation of the typical and the eared-nightjars, and some authorities have adopted this Sibley-Ahlquist recommendation, and also the more far-reaching one to group all the owls (traditionally Strigiformes) together in the Caprimulgiformes. The listing below retains a more orthodox arrangement, but recognises the eared-nightjars as a separate group. For more detail and an alternative classification scheme, see Caprimulgiformes and Sibley-Ahlquist taxonomy.
 
Caprimulgus is a large and very widespread genus of nightjars, medium-sized nocturnal birds with long pointed wings, short legs and short bills. The name is derived from the Latin for goatsucker, based on the ancient, but mistaken, belief that the European Nightjar would suck milk from goats.
 
Caprimulgus nightjars are found around the world, and like other nightjars they usually nest on the ground. They are mostly active in the late evening and early morning or at night, and feed predominantly on moths and other large flying insects.
 
Most have small feet, of little use for walking, and their soft plumage is cryptically coloured to resemble bark or leaves. Some species, unusually for birds, perch along a branch, rather than across it, which helps to conceal them during the day. Temperate species are strongly migratory, wintering in the tropics.
 
Caprimulgus species have relatively long bills and rictal bristles. Many have repetitive and often mechanical songs.
 
The Tawny-collared Nightjar is a species of nightjar in the Caprimulgidae family. It is found in Mexico and Nicaragua. Its natural habitat is subtropical or tropical dry forests.
 
The Nechisar Nightjar (Caprimulgus solala) is a species of nightjar in the Caprimulgidae family. It is endemic to Ethiopia.
 
The species was first discovered in 1990 when researchers discovered a decomposing specimen in the Nechisar National Park. After bringing back a single wing from the specimen to the Natural History Museum in London, it was determined to be a previously unknown species. Its specific name, solala, means "only a wing".
 
Its natural habitat is subtropical or tropical dry lowland grassland; it is threatened by habitat loss.
 
An expedition to the area the wing was found located the nightjar on the first night they arrived on scene. The bird was easily distinguishable from the more common smaller nightjars in the area, being a large nightjar with huge white carpal parches and was seen several times in the next few nights. The specimen observed appeared to be a male, while the museum wing specimen had a more buffy carpal patch and appeared to be that of an immature of female bird.
The Hispaniola Nightjar (Caprimulgus ekmani) is a species of nightjar in the Caprimulgidae family. It is found in Haiti an

wasp

The term wasp is typically defined as any insect of the order Hymenoptera and suborder Apocrita that is neither a bee nor ant. Almost every pest insect species has at least one wasp species that preys upon it or parasitizes it, making wasps critically important in natural control of their numbers, or natural biocontrol. Parasitic wasps are increasingly used in agricultural pest control as they prey mostly on pest insects and have little impact on crops.
 
The majority of wasp species (well over 100,000 species) are "parasitic" (technically known as parasitoids), and the ovipositor is used simply to lay eggs, often directly into the body of the host. The most familiar wasps belong to Aculeata, a division of Apocrita, whose ovipositors are adapted into a venomous sting, though a great many aculeate species do not sting. Aculeata also contains ants and bees, and many wasps are commonly mistaken for bees, and vice-versa. In a similar respect, insects called "velvet ants" (the family Mutillidae) are technically wasps.
 
The suborder Symphyta, known commonly as sawflies, differ from members of Apocrita by lacking a sting, and having a broader connection between the mesosoma and metasoma. In addition to this, Symphyta larvae are mostly herbivorous and "caterpillarlike", whereas those of Apocrita are largely predatory or parasitoids.
 
A much narrower and simpler but popular definition of the term wasp is any member of the aculeate family Vespidae, which includes (among others) the genera known in North America as yellowjackets (Vespula and Dolichovespula) and hornets (Vespa); in many countries outside of the Western Hemisphere, the vernacular usage of wasp is even further restricted to apply strictly to yellowjackets (e.g., the "common wasp").
 
The various species of wasps fall into one of two main categories: solitary wasps and social wasps. Adult solitary live and operate alone, and most do not construct nests (below); all adult solitary wasps are fertile. By contrast, social wasps exist in colonies numbering up to several thousand strong and build nests—but in some cases not all of the colony can reproduce. In the more advanced species, just the wasp queen and male wasps can mate, whilst the majority of the colony is made up of sterile female workers.
 
The following characteristics are present in most wasps:
 
Two pairs of wings (except wingless or brachypterous forms in all female Mutillidae, Bradynobaenidae, many male Agaonidae, many female Ichneumonidae, Braconidae, Tiphiidae, Scelionidae, Rhopalosomatidae, Eupelmidae, and various other families).
An ovipositor, or stinger (which is only present in females because it derives from the ovipositor, a female sex organ).
Few or no thickened hairs (in contrast to bees); except Mutillidae, Bradynobaenidae, Scoliidae.
Nearly all wasps are terrestrial; only a few specialized parasitic groups are aquatic.
Predators or parasitoids, mostly on other terrestrial insects; most species of Pompilidae (e.g. tarantula hawks), specialize in using spiders as prey, and various parasitic wasps use spiders or other arachnids as reproductive hosts.
Wasps are critically important in natural biocontrol. Almost every pest insect species has at least one wasp species that is a predator or parasite upon it. Parasitic wasps are also increasingly used in agricultural pest control. Wasps also constitute an important part of the food chain.
 
In wasps, as in other Hymenoptera, sexes are significantly genetically different. Females have a diploid (2n) number of chromosomes and come about from fertilized eggs. Males, in contrast, have a haploid  number of chromosomes and develop from an unfertilized egg. Wasps store sperm inside their body and control its release for each individual egg as it is laid; if a female wishes to produce a male egg, she simply lays the egg without fertilizing it. Therefore, under most conditions in most species, wasps have complete voluntary control over the sex of their offspring.
 
Anatomically, there is a great deal of variation between different types of wasp. Like all insects, wasps have a hard exoskeleton covering their three main body parts. These parts are known as the head, mesosoma and metasoma. Wasps also have a constricted region joining the first and second segments of the abdomen (the first segment is part of the mesosoma, the second is part of the metasoma) known as the petiole. Like all insects, wasps have three sets of two legs. In addition to their compound eyes, wasps also have several simple eyes known as ocelli. These are typically arranged in a triangular formation just forward of an area of the head known as the vertex.
 
It is possible to distinguish between genders of some wasp species based on the number of divisions on their antennae. Male yellowjacket wasps, for example, have 13 divisions per antenna, while females have 12. Males can in some cases be differentiated from females by virtue of having an additional visible segment in the metasoma. The difference between sterile female worker wasps and queens also varies between species but generally the queen is noticeably larger than both males and other females.
 
Wasps can be differentiated from bees, which have a flattened hind basitarsus. Unlike bees, wasps generally lack plumose hairs.
 
Generally wasps are parasites or parasitoids as larvae, and feed only on nectar as adults. Many wasps are predatory, using other insects (often paralyzed) as food for their larvae. A few social wasps are omnivorous, feeding on a variety of fallen fruit, nectar, and carrion. Some of these social wasps, such as yellowjackets, may scavenge for dead insects to provide for their young. In many social species the larvae provide sweet secretions that are fed to the adults.
 
In parasitic species, the first meals are almost always provided by the animal that the adult wasp used as a host for its young. Adult male wasps sometimes visit flowers to obtain nectar to feed on in much the same manner as honey bees. Occasionally, some species, such as yellowjackets, invade honey bee nests and steal honey and/or brood
With most species, adult parasitic wasps themselves do not take any nutrients from their prey, and, much like bees, butterflies, and moths, those that do feed as adults typically derive all of their nutrition from nectar. Parasitic wasps are typically parasitoids, and extremely diverse in habits, many laying their eggs in inert stages of their host (egg or pupa), or sometimes paralyzing their prey by injecting it with venom through their ovipositor. They then insert one or more eggs into the host or deposit them upon the host externally. The host remains alive until the parasitoid larvae are mature, usually dying either when the parasitoids pupate, or when they emerge as adults.
 
The type of nest produced by wasps can depend on the species and location. Many social wasps produce paper pulp nests on trees, in attics, holes in the ground or other such sheltered areas with access to the outdoors. By contrast solitary wasps are generally parasitic or predatory and only the latter build nests at all. Unlike honey bees, wasps have no wax producing glands. Many instead create a paper-like substance primarily from wood pulp. Wood fibers are gathered locally from weathered wood, softened by chewing and mixing with saliva. The pulp is then used to make combs with cells for brood rearing. More commonly, nests are simply burrows excavated in a substrate (usually the soil, but also plant stems), or, if constructed, they are constructed from mud.
 
The nesting habits of solitary wasps are more diverse than those of social wasps. Mud daubers and pollen wasps construct mud cells in sheltered places typically on the side of walls. Potter wasps similarly build vase-like nests from mud, often with multiple cells, attached to the twigs of trees or against walls. Most other predatory wasps burrow into soil or into plant stems, and a few do not build nests at all and prefer naturally occurring cavities, such as small holes in wood. A single egg is laid in each cell, which is sealed thereafter, so there is no interaction between the larvae and the adults, unlike in social wasps. In some species, male eggs are selectively placed on smaller prey, leading to males being generally smaller than females.
 
The nests of some social wasps, such as hornets, are first constructed by the queen and reach about the size of a walnut before sterile female workers take over construction. The queen initially starts the nest by making a single layer or canopy and working outwards until she reaches the edges of the cavity. Beneath the canopy she constructs a stalk to which she can attach several cells; these cells are where the first eggs will be laid. The queen then continues to work outwards to the edges of the cavity after which she adds another tier. This process is repeated, each time adding a new tier until eventually enough female workers have been born and matured to take over construction of the nest leaving the queen to focus on reproduction. For this reason, the size of a nest is generally a good indicator of approximately how many female workers there are in the colony. Social wasp colonies often have populations exceeding several thousand female workers and at least one queen. Polistes and some related types of paper wasp do not construct their nests in tiers but rather in flat single combs.
 
Wasps do not reproduce via mating flights like bees. Instead social wasps reproduce between a fertile queen and male wasp; in some cases queens may be fertilized by the sperm of several males. After successfully mating, the male's sperm cells are stored in a tightly packed ball inside the queen. The sperm cells are kept stored in a dormant state until they are needed the following spring. At a certain time of the year (often around autumn), the bulk of the wasp colony dies away, leaving only the young mated queens alive. During this time they leave the nest and find a suitable area to hibernate for the winter.
 
After emerging from hibernation during early summer, the young queens search for a suitable nesting site. Upon finding an area for their colony, the queen constructs a basic wood fiber nest roughly the size of a walnut into which she will begin to lay eggs.
 
The sperm that was stored earlier and kept dormant over winter is now used to fertilize the eggs being laid. The storage of sperm inside the female queen allows her to lay a considerable number of fertilized eggs without the need for repeated mating with a male wasp. For this reason a single female queen is capable of building an entire colony from only herself. The queen initially raises the first several sets of wasp eggs until enough sterile female workers exist to maintain the offspring without her assistance. All of the eggs produced at this time are sterile female workers who will begin to construct a more elaborate nest around their queen as they grow in number.
 
By this time the nest size has expanded considerably and now numbers between several hundred and several thousand wasps. Towards the end of the summer, the queen begins to run out of stored sperm to fertilize more eggs. These eggs develop into fertile males and fertile female queens. The male drones then fly out of the nest and find a mate thus perpetuating the wasp reproductive cycle. In most species of social wasp the young queens mate in the vicinity of their home nest and do not travel like their male counterparts do. The young queens will then leave the colony to hibernate for the winter once the other worker wasps and founder queen have started to die off. After successfully mating with a young queen, the male drones die off as well. Generally, young queens and drones from the same nest do not mate with each other; this ensures more genetic variation within wasp populations, especially considering that all members of the colony are theoretically the direct genetic descendants of the founder queen and a single male drone. In practice, however, colonies can sometimes consist of the offspring of several male drones. Wasp queens generally (but not always) create new nests each year, probably because the weak construction of most nests render them uninhabitable after the winter.
 
Unlike honey bee queens, wasp queens typically live for only one year. Also queen wasps do not organize their colony or have any raised status and hierarchical power within the social structure. They are more simply the reproductive element of the colony and the initial builder of the nest in those species which construct nests.
 
Not all social wasps have castes that are physically different in size and structure. In many polistine paper wasps and stenogastrines, for example, the castes of females are determined behaviorally, through dominance interactions, rather than having caste predetermined. All female wasps are potentially capable of becoming a colony's queen and this process is often determined by which female successfully lays eggs first and begins construction of the nest. Evidence suggests that females compete amongst each other by eating the eggs of other rival females. The queen may, in some cases, simply be the female that can eat the largest volume of eggs while ensuring that her own eggs survive (often achieved by laying the most). This process theoretically determines the strongest and most reproductively capable female and selects her as the queen. Once the first eggs have hatched, the subordinate females stop laying eggs and instead forage for the new queen and feed the young; that is, the competition largely ends, with the losers becoming workers, though if the dominant female dies, a new hierarchy may be established with a former "worker" acting as the replacement queen. Polistine nests are considerably smaller than many other social wasp nests, typically housing only around 250 wasps, compared to the several thousand common with yellowjackets, and stenogastrines have the smallest colonies of all, rarely with more than a dozen wasps in a mature colony.
 
The German wasp, or European wasp, Vespula germanica, is a wasp found in much of the Northern Hemisphere, native to Europe, northern Africa, and temperate Asia. It has been introduced and is well-established in many other places, including North America, South America (Argentina and Chile), Australia and New Zealand. German wasps are part of the family Vespidae and are sometimes mistakenly referred to as paper wasps because they build a grey paper nest—although, strictly speaking, paper wasps are part of the subfamily Polistinae. In North America, they are also known as yellowjackets.
 
The German wasp is about 13mm (0.5 inch) long, and has typical wasp colours of black and yellow. It is very similar to the common wasp (Vespula vulgaris), but seen head on, its face has three tiny black dots. German wasps also have black dots on their abdomen, while the common wasp's analogous markings are fused with the black rings above them, forming a different pattern
The nest is made from chewed plant fibres, mixed with saliva. They are generally found close to or in the ground, rather than higher up on bushes and trees like hornets. It has open cells and a petiole attaching the nest to the substrate. The wasps produce a chemical which repels ants, and secrete it around the base of this petiole in order to avoid ant predation.
 
A solitary female queen starts the nest, building 20–30 cells before initial egg-laying. This phase begins in spring, depending on climatic conditions. She fashions a petiole and produces a single cell at the end of it. Six further cells are then added around this to produce the characteristic hexagonal shape of the nest cells.
 
Once the larvae have hatched as workers, they take up most of the colony’s foraging, brood care and nest maintenance. A finished nest may be 20–30 cm across and contain 3,000 individuals.
 
Each wasp colony includes one queen and a number of sterile workers. Colonies usually last only one year, all but the queen dying at the onset of winter. However, in mild climates such as New Zealand, around 10% of the colonies survive the winter. New queens and males (drones) are produced towards the end of the summer, and after mating, the queen overwinters in a crack or other sheltered location.
 
This common and widespread wasp collects insects including caterpillars to feed to its larvae, and is therefore generally beneficial. The adults feed on nectar and sweet fruit, and are also attracted to human food and food waste, particularly sodas and meats.
 
The nests are subject to predation by the Honey Buzzard, which excavates them to obtain the larva. The hoverfly Volucella pellucens and some of its relatives lay their eggs in the wasp's nest, and the larva feeds on the wasp's young.
 
This species is considered a pest in most areas outside its native range, though its long residency in North America is such that it is not treated with any level of urgency there, in contrast to areas such as South America, where the introduction is more recent, and the impacts far more dramatic, prompting a greater degree of concern over control measures.
 
Along with the closely related common wasp and two species of Polistes, the German wasp is likewise considered to be a pest in New Zealand. It was probably introduced in the late 19th century, but did not appear in large numbers until around 1940. It is common in the beech forest since it is one of the two wasps that feeds on the honeydew exuded by the native beech scale insect which lives in the bark of the trees, eventually killing the tree. It has a serious effect on the forest ecology since there is less honeydew available for the native birds. In domestic situations nests have been known to become very large, sometimes taking up entire attic spaces in houses. This is put down to the comparatively mild winters experienced in New Zealand, as opposed to the wasp's usual European habitat.
 
An unusual attempt at wasp control is related from Abercairney in Scotland, where until the 1950s children were encouraged to compete in the Wasp Cup, awarded to the competitor who handed in the most queen wasps. The wasps were stuck to card and a payment of 1d was made for each; totals of forty were not uncommon.
 
The common wasp, Vespula vulgaris, is a yellowjacket wasp found in much of the Northern Hemisphere, and introduced to Australia and New Zealand. It is a eusocial vespid, which builds its grey paper nest on a structure capable of supporting it, such as a tree, or underground, often using an abandoned mammal hole as a start for the site, which is then enlarged by the workers. The foundress queen may also select a hollow tree, wall cavity, or rock crevice for a nest site.
 
Adult workers of the common wasp measure about 12–17 millimetres (0.47–0.67 in) from head to abdomen, whereas the queen is about 20 millimetres (0.79 in) long. It has aposematic colours of black and yellow and is very similar to the German wasp (or European wasp, Vespula germanica) but seen head on, its face lacks the three black dots characteristic of that species. Additionally it can be distinguished by a lack of black dots on its back (gastral terga), which are located further up and form part of the black rings on each of the abdomen's six segments. Furthermore the genal area – the part of the head to which the jaws of an insect are attached – is usually broken by black .
 
Common wasps are colloquially known as "jaspers" in South East England and more commonly the English Midlands, although it is not clear whether the etymology refers to the Latin name "vespa" or the striped abdomen, which echoes the striped mineral jasper.
 
The nest is made from chewed wood fibres, mixed with saliva. It has open cells and a cylindrical column known as a "petiole" attaching the nest to the substrate. The wasps produce a chemical which repels ants and secrete it around the base of the petiole in order to avoid ant predation. A solitary female queen starts the nest, building 20–30 cells before initial egg-laying. This phase begins in spring, depending on climatic conditions. She fashions a petiole and produces a single cell at the end of it. Six further cells are then added around this to produce the characteristic hexagonal shape of the nest cells. One egg is laid in each cell and as they hatch each larva holds itself in the vertical cells by pressing their bodies against the sides. The queen now divides her time between feeding the larvae on the juices of masticated insects and nest building.[3] Once the larva reaches full size it spins a cover over the cell, pupates and metamorphosises into an adult. When enough adult workers have emerged they take up most of the colony’s foraging, brood care and nest maintenance, and the queen, who is now fed by the workers, concentrates all her energy on reproduction. The spherical nest is built, from the top downwards, with successive combs of cells separated by petioles. The queen larvae, know as "gynes", are reared in larger cells in the lower combs.The finished nest may contain 5,000–10,000 individuals.
 
Each wasp colony includes one queen and a number of sterile workers. Colonies usually last only one year, with all but the queen dying at the onset of winter. New queens and males (drones) are produced towards the end of the summer, and after mating, the queen overwinters in a hole or other sheltered location, sometimes in buildings. Wasp nests are not reused from one year to the next, however, in the mild climate of New Zealand and Australia, a few of the colonies may survive the winter, although this is much more common with the German wasp.
This common and widespread wasp collects insects including caterpillars to feed to its larvae; the adults feed on nectar and sweet fruit. Common wasps will also attempt to invade honey bee nests to steal their honey; the bees will attempt to defend their nest by stinging the wasp to death.
 
Common wasp nests are subject to predation by the Honey Buzzard, which excavates them to obtain the larva. As the wasps have a tendency to build nests near houses, they are not necessarily defensive of their hive and can often be approached without immediate attack.
 
The hoverfly Volucella pellucens and some of its relatives lay their eggs in a wasp nest and their larvae feed on the wasps’ young and dead adults. Spiders are yet another predator of this and many other species.
 
Along with the German wasp and two species of Polistes (all invasive species), the common wasp is considered a pest species in New Zealand as it competes with endemic species for food, such as insects and honeydew.
 

waspy

The term wasp is typically defined as any insect of the order Hymenoptera and suborder Apocrita that is neither a bee nor ant. Almost every pest insect species has at least one wasp species that preys upon it or parasitizes it, making wasps critically important in natural control of their numbers, or natural biocontrol. Parasitic wasps are increasingly used in agricultural pest control as they prey mostly on pest insects and have little impact on crops.
 
The majority of wasp species (well over 100,000 species) are "parasitic" (technically known as parasitoids), and the ovipositor is used simply to lay eggs, often directly into the body of the host. The most familiar wasps belong to Aculeata, a division of Apocrita, whose ovipositors are adapted into a venomous sting, though a great many aculeate species do not sting. Aculeata also contains ants and bees, and many wasps are commonly mistaken for bees, and vice-versa. In a similar respect, insects called "velvet ants" (the family Mutillidae) are technically wasps.
 
The suborder Symphyta, known commonly as sawflies, differ from members of Apocrita by lacking a sting, and having a broader connection between the mesosoma and metasoma. In addition to this, Symphyta larvae are mostly herbivorous and "caterpillarlike", whereas those of Apocrita are largely predatory or parasitoids.
 
A much narrower and simpler but popular definition of the term wasp is any member of the aculeate family Vespidae, which includes (among others) the genera known in North America as yellowjackets (Vespula and Dolichovespula) and hornets (Vespa); in many countries outside of the Western Hemisphere, the vernacular usage of wasp is even further restricted to apply strictly to yellowjackets (e.g., the "common wasp").
 
The various species of wasps fall into one of two main categories: solitary wasps and social wasps. Adult solitary live and operate alone, and most do not construct nests (below); all adult solitary wasps are fertile. By contrast, social wasps exist in colonies numbering up to several thousand strong and build nests—but in some cases not all of the colony can reproduce. In the more advanced species, just the wasp queen and male wasps can mate, whilst the majority of the colony is made up of sterile female workers.
 
The following characteristics are present in most wasps:
 
Two pairs of wings (except wingless or brachypterous forms in all female Mutillidae, Bradynobaenidae, many male Agaonidae, many female Ichneumonidae, Braconidae, Tiphiidae, Scelionidae, Rhopalosomatidae, Eupelmidae, and various other families).
An ovipositor, or stinger (which is only present in females because it derives from the ovipositor, a female sex organ).
Few or no thickened hairs (in contrast to bees); except Mutillidae, Bradynobaenidae, Scoliidae.
Nearly all wasps are terrestrial; only a few specialized parasitic groups are aquatic.
Predators or parasitoids, mostly on other terrestrial insects; most species of Pompilidae (e.g. tarantula hawks), specialize in using spiders as prey, and various parasitic wasps use spiders or other arachnids as reproductive hosts.
Wasps are critically important in natural biocontrol. Almost every pest insect species has at least one wasp species that is a predator or parasite upon it. Parasitic wasps are also increasingly used in agricultural pest control. Wasps also constitute an important part of the food chain.
 
In wasps, as in other Hymenoptera, sexes are significantly genetically different. Females have a diploid (2n) number of chromosomes and come about from fertilized eggs. Males, in contrast, have a haploid  number of chromosomes and develop from an unfertilized egg. Wasps store sperm inside their body and control its release for each individual egg as it is laid; if a female wishes to produce a male egg, she simply lays the egg without fertilizing it. Therefore, under most conditions in most species, wasps have complete voluntary control over the sex of their offspring.
 
Anatomically, there is a great deal of variation between different types of wasp. Like all insects, wasps have a hard exoskeleton covering their three main body parts. These parts are known as the head, mesosoma and metasoma. Wasps also have a constricted region joining the first and second segments of the abdomen (the first segment is part of the mesosoma, the second is part of the metasoma) known as the petiole. Like all insects, wasps have three sets of two legs. In addition to their compound eyes, wasps also have several simple eyes known as ocelli. These are typically arranged in a triangular formation just forward of an area of the head known as the vertex.
 
It is possible to distinguish between genders of some wasp species based on the number of divisions on their antennae. Male yellowjacket wasps, for example, have 13 divisions per antenna, while females have 12. Males can in some cases be differentiated from females by virtue of having an additional visible segment in the metasoma. The difference between sterile female worker wasps and queens also varies between species but generally the queen is noticeably larger than both males and other females.
 
Wasps can be differentiated from bees, which have a flattened hind basitarsus. Unlike bees, wasps generally lack plumose hairs.
 
Generally wasps are parasites or parasitoids as larvae, and feed only on nectar as adults. Many wasps are predatory, using other insects (often paralyzed) as food for their larvae. A few social wasps are omnivorous, feeding on a variety of fallen fruit, nectar, and carrion. Some of these social wasps, such as yellowjackets, may scavenge for dead insects to provide for their young. In many social species the larvae provide sweet secretions that are fed to the adults.
 
In parasitic species, the first meals are almost always provided by the animal that the adult wasp used as a host for its young. Adult male wasps sometimes visit flowers to obtain nectar to feed on in much the same manner as honey bees. Occasionally, some species, such as yellowjackets, invade honey bee nests and steal honey and/or brood
With most species, adult parasitic wasps themselves do not take any nutrients from their prey, and, much like bees, butterflies, and moths, those that do feed as adults typically derive all of their nutrition from nectar. Parasitic wasps are typically parasitoids, and extremely diverse in habits, many laying their eggs in inert stages of their host (egg or pupa), or sometimes paralyzing their prey by injecting it with venom through their ovipositor. They then insert one or more eggs into the host or deposit them upon the host externally. The host remains alive until the parasitoid larvae are mature, usually dying either when the parasitoids pupate, or when they emerge as adults.
 
The type of nest produced by wasps can depend on the species and location. Many social wasps produce paper pulp nests on trees, in attics, holes in the ground or other such sheltered areas with access to the outdoors. By contrast solitary wasps are generally parasitic or predatory and only the latter build nests at all. Unlike honey bees, wasps have no wax producing glands. Many instead create a paper-like substance primarily from wood pulp. Wood fibers are gathered locally from weathered wood, softened by chewing and mixing with saliva. The pulp is then used to make combs with cells for brood rearing. More commonly, nests are simply burrows excavated in a substrate (usually the soil, but also plant stems), or, if constructed, they are constructed from mud.
 
The nesting habits of solitary wasps are more diverse than those of social wasps. Mud daubers and pollen wasps construct mud cells in sheltered places typically on the side of walls. Potter wasps similarly build vase-like nests from mud, often with multiple cells, attached to the twigs of trees or against walls. Most other predatory wasps burrow into soil or into plant stems, and a few do not build nests at all and prefer naturally occurring cavities, such as small holes in wood. A single egg is laid in each cell, which is sealed thereafter, so there is no interaction between the larvae and the adults, unlike in social wasps. In some species, male eggs are selectively placed on smaller prey, leading to males being generally smaller than females.
 
The nests of some social wasps, such as hornets, are first constructed by the queen and reach about the size of a walnut before sterile female workers take over construction. The queen initially starts the nest by making a single layer or canopy and working outwards until she reaches the edges of the cavity. Beneath the canopy she constructs a stalk to which she can attach several cells; these cells are where the first eggs will be laid. The queen then continues to work outwards to the edges of the cavity after which she adds another tier. This process is repeated, each time adding a new tier until eventually enough female workers have been born and matured to take over construction of the nest leaving the queen to focus on reproduction. For this reason, the size of a nest is generally a good indicator of approximately how many female workers there are in the colony. Social wasp colonies often have populations exceeding several thousand female workers and at least one queen. Polistes and some related types of paper wasp do not construct their nests in tiers but rather in flat single combs.
 
Wasps do not reproduce via mating flights like bees. Instead social wasps reproduce between a fertile queen and male wasp; in some cases queens may be fertilized by the sperm of several males. After successfully mating, the male's sperm cells are stored in a tightly packed ball inside the queen. The sperm cells are kept stored in a dormant state until they are needed the following spring. At a certain time of the year (often around autumn), the bulk of the wasp colony dies away, leaving only the young mated queens alive. During this time they leave the nest and find a suitable area to hibernate for the winter.
 
After emerging from hibernation during early summer, the young queens search for a suitable nesting site. Upon finding an area for their colony, the queen constructs a basic wood fiber nest roughly the size of a walnut into which she will begin to lay eggs.
 
The sperm that was stored earlier and kept dormant over winter is now used to fertilize the eggs being laid. The storage of sperm inside the female queen allows her to lay a considerable number of fertilized eggs without the need for repeated mating with a male wasp. For this reason a single female queen is capable of building an entire colony from only herself. The queen initially raises the first several sets of wasp eggs until enough sterile female workers exist to maintain the offspring without her assistance. All of the eggs produced at this time are sterile female workers who will begin to construct a more elaborate nest around their queen as they grow in number.
 
By this time the nest size has expanded considerably and now numbers between several hundred and several thousand wasps. Towards the end of the summer, the queen begins to run out of stored sperm to fertilize more eggs. These eggs develop into fertile males and fertile female queens. The male drones then fly out of the nest and find a mate thus perpetuating the wasp reproductive cycle. In most species of social wasp the young queens mate in the vicinity of their home nest and do not travel like their male counterparts do. The young queens will then leave the colony to hibernate for the winter once the other worker wasps and founder queen have started to die off. After successfully mating with a young queen, the male drones die off as well. Generally, young queens and drones from the same nest do not mate with each other; this ensures more genetic variation within wasp populations, especially considering that all members of the colony are theoretically the direct genetic descendants of the founder queen and a single male drone. In practice, however, colonies can sometimes consist of the offspring of several male drones. Wasp queens generally (but not always) create new nests each year, probably because the weak construction of most nests render them uninhabitable after the winter.
 
Unlike honey bee queens, wasp queens typically live for only one year. Also queen wasps do not organize their colony or have any raised status and hierarchical power within the social structure. They are more simply the reproductive element of the colony and the initial builder of the nest in those species which construct nests.
 
Not all social wasps have castes that are physically different in size and structure. In many polistine paper wasps and stenogastrines, for example, the castes of females are determined behaviorally, through dominance interactions, rather than having caste predetermined. All female wasps are potentially capable of becoming a colony's queen and this process is often determined by which female successfully lays eggs first and begins construction of the nest. Evidence suggests that females compete amongst each other by eating the eggs of other rival females. The queen may, in some cases, simply be the female that can eat the largest volume of eggs while ensuring that her own eggs survive (often achieved by laying the most). This process theoretically determines the strongest and most reproductively capable female and selects her as the queen. Once the first eggs have hatched, the subordinate females stop laying eggs and instead forage for the new queen and feed the young; that is, the competition largely ends, with the losers becoming workers, though if the dominant female dies, a new hierarchy may be established with a former "worker" acting as the replacement queen. Polistine nests are considerably smaller than many other social wasp nests, typically housing only around 250 wasps, compared to the several thousand common with yellowjackets, and stenogastrines have the smallest colonies of all, rarely with more than a dozen wasps in a mature colony.
 
The German wasp, or European wasp, Vespula germanica, is a wasp found in much of the Northern Hemisphere, native to Europe, northern Africa, and temperate Asia. It has been introduced and is well-established in many other places, including North America, South America (Argentina and Chile), Australia and New Zealand. German wasps are part of the family Vespidae and are sometimes mistakenly referred to as paper wasps because they build a grey paper nest—although, strictly speaking, paper wasps are part of the subfamily Polistinae. In North America, they are also known as yellowjackets.
 
The German wasp is about 13mm (0.5 inch) long, and has typical wasp colours of black and yellow. It is very similar to the common wasp (Vespula vulgaris), but seen head on, its face has three tiny black dots. German wasps also have black dots on their abdomen, while the common wasp's analogous markings are fused with the black rings above them, forming a different pattern
The nest is made from chewed plant fibres, mixed with saliva. They are generally found close to or in the ground, rather than higher up on bushes and trees like hornets. It has open cells and a petiole attaching the nest to the substrate. The wasps produce a chemical which repels ants, and secrete it around the base of this petiole in order to avoid ant predation.
 
A solitary female queen starts the nest, building 20–30 cells before initial egg-laying. This phase begins in spring, depending on climatic conditions. She fashions a petiole and produces a single cell at the end of it. Six further cells are then added around this to produce the characteristic hexagonal shape of the nest cells.
 
Once the larvae have hatched as workers, they take up most of the colony’s foraging, brood care and nest maintenance. A finished nest may be 20–30 cm across and contain 3,000 individuals.
 
Each wasp colony includes one queen and a number of sterile workers. Colonies usually last only one year, all but the queen dying at the onset of winter. However, in mild climates such as New Zealand, around 10% of the colonies survive the winter. New queens and males (drones) are produced towards the end of the summer, and after mating, the queen overwinters in a crack or other sheltered location.
 
This common and widespread wasp collects insects including caterpillars to feed to its larvae, and is therefore generally beneficial. The adults feed on nectar and sweet fruit, and are also attracted to human food and food waste, particularly sodas and meats.
 
The nests are subject to predation by the Honey Buzzard, which excavates them to obtain the larva. The hoverfly Volucella pellucens and some of its relatives lay their eggs in the wasp's nest, and the larva feeds on the wasp's young.
 
This species is considered a pest in most areas outside its native range, though its long residency in North America is such that it is not treated with any level of urgency there, in contrast to areas such as South America, where the introduction is more recent, and the impacts far more dramatic, prompting a greater degree of concern over control measures.
 
Along with the closely related common wasp and two species of Polistes, the German wasp is likewise considered to be a pest in New Zealand. It was probably introduced in the late 19th century, but did not appear in large numbers until around 1940. It is common in the beech forest since it is one of the two wasps that feeds on the honeydew exuded by the native beech scale insect which lives in the bark of the trees, eventually killing the tree. It has a serious effect on the forest ecology since there is less honeydew available for the native birds. In domestic situations nests have been known to become very large, sometimes taking up entire attic spaces in houses. This is put down to the comparatively mild winters experienced in New Zealand, as opposed to the wasp's usual European habitat.
 
An unusual attempt at wasp control is related from Abercairney in Scotland, where until the 1950s children were encouraged to compete in the Wasp Cup, awarded to the competitor who handed in the most queen wasps. The wasps were stuck to card and a payment of 1d was made for each; totals of forty were not uncommon.
 
The common wasp, Vespula vulgaris, is a yellowjacket wasp found in much of the Northern Hemisphere, and introduced to Australia and New Zealand. It is a eusocial vespid, which builds its grey paper nest on a structure capable of supporting it, such as a tree, or underground, often using an abandoned mammal hole as a start for the site, which is then enlarged by the workers. The foundress queen may also select a hollow tree, wall cavity, or rock crevice for a nest site.
 
Adult workers of the common wasp measure about 12–17 millimetres (0.47–0.67 in) from head to abdomen, whereas the queen is about 20 millimetres (0.79 in) long. It has aposematic colours of black and yellow and is very similar to the German wasp (or European wasp, Vespula germanica) but seen head on, its face lacks the three black dots characteristic of that species. Additionally it can be distinguished by a lack of black dots on its back (gastral terga), which are located further up and form part of the black rings on each of the abdomen's six segments. Furthermore the genal area – the part of the head to which the jaws of an insect are attached – is usually broken by black .
 
Common wasps are colloquially known as "jaspers" in South East England and more commonly the English Midlands, although it is not clear whether the etymology refers to the Latin name "vespa" or the striped abdomen, which echoes the striped mineral jasper.
 
The nest is made from chewed wood fibres, mixed with saliva. It has open cells and a cylindrical column known as a "petiole" attaching the nest to the substrate. The wasps produce a chemical which repels ants and secrete it around the base of the petiole in order to avoid ant predation. A solitary female queen starts the nest, building 20–30 cells before initial egg-laying. This phase begins in spring, depending on climatic conditions. She fashions a petiole and produces a single cell at the end of it. Six further cells are then added around this to produce the characteristic hexagonal shape of the nest cells. One egg is laid in each cell and as they hatch each larva holds itself in the vertical cells by pressing their bodies against the sides. The queen now divides her time between feeding the larvae on the juices of masticated insects and nest building.[3] Once the larva reaches full size it spins a cover over the cell, pupates and metamorphosises into an adult. When enough adult workers have emerged they take up most of the colony’s foraging, brood care and nest maintenance, and the queen, who is now fed by the workers, concentrates all her energy on reproduction. The spherical nest is built, from the top downwards, with successive combs of cells separated by petioles. The queen larvae, know as "gynes", are reared in larger cells in the lower combs.The finished nest may contain 5,000–10,000 individuals.
 
Each wasp colony includes one queen and a number of sterile workers. Colonies usually last only one year, with all but the queen dying at the onset of winter. New queens and males (drones) are produced towards the end of the summer, and after mating, the queen overwinters in a hole or other sheltered location, sometimes in buildings. Wasp nests are not reused from one year to the next, however, in the mild climate of New Zealand and Australia, a few of the colonies may survive the winter, although this is much more common with the German wasp.
This common and widespread wasp collects insects including caterpillars to feed to its larvae; the adults feed on nectar and sweet fruit. Common wasps will also attempt to invade honey bee nests to steal their honey; the bees will attempt to defend their nest by stinging the wasp to death.
 
Common wasp nests are subject to predation by the Honey Buzzard, which excavates them to obtain the larva. As the wasps have a tendency to build nests near houses, they are not necessarily defensive of their hive and can often be approached without immediate attack.
 
The hoverfly Volucella pellucens and some of its relatives lay their eggs in a wasp nest and their larvae feed on the wasps’ young and dead adults. Spiders are yet another predator of this and many other species.
 
Along with the German wasp and two species of Polistes (all invasive species), the common wasp is considered a pest species in New Zealand as it competes with endemic species for food, such as insects and honeydew.