Приказивање постова са ознаком Lynx. Прикажи све постове
Приказивање постова са ознаком Lynx. Прикажи све постове

уторак, 23. децембар 2008.

Iberian lynx (Lynx pardinus)

The Iberian lynx (Lynx pardinus), sometimes referred to as the Spanish lynx, is a critically endangered feline mammal native to the Iberian Peninsula in Southern Europe. The species often used to be misclassified as a subspecies of the Eurasian lynx (Lynx lynx), but is now considered a separate species. Both species occurred together in central Europe in the Pleistocene epoch, being separated by habitat choice. The Iberian lynx is believed to have evolved from Lynx issiodorensis.

While the Eurasian lynx bears rather pallid markings, the Iberian lynx has distinctive, leopard-like spots with a coat that is often light grey or various shades of light brownish-yellow. Some western populations were spotless though these have recently become extinct. The head and body length is 85–110 cm, with the short tail an additional 12–30 cm; the shoulder height is 60–70 cm. The male is larger than the female, with the average weight of males 12.9 kg and a maximum of 26.8 kg, compared to 9.4 kg for females; this about half the size of the Eurasian lynx. The Iberian lynx does not differ greatly from the Eurasian lynx but more closely resembles a bobcat. The face is more cat-like than that of Eurasian lynx. It has a short stubby bob tail with a black tip, and a tuft of black hair on the tip of the pointed ears, whiskers and sideburns.

The Iberian lynx is smaller than its northern relatives, and so typically hunts smaller sized animals, usually no larger than hares. It also differs in habitat choice, with Iberian lynx inhabiting open scrub and Eurasian lynx inhabiting forests. It hunts mammals (including rodents and insectivores), birds, reptiles and amphibians at twilight. The European rabbit (Oryctolagus cuniculus) is its main prey (79.5-86.7%), with (5.9%) hares (Lepus granatensis) and (3.2%) rodents less common. A male requires one rabbit per day, and a female bringing up cubs will eat three rabbits per day. As the population of rabbits in Spain has declined, the Iberian lynx is often forced to attack young deer, fallow deer, roebuck or mouflons. The Iberian lynx competes with the red fox, the meloncillo (Herpestes ichneumon) and the wildcat. It is solitary and hunts alone; it will stalk its prey or lie in wait for hours behind a bush or rock until the prey is sufficiently close to pounce in a few strides. The tufts of hair on its ears helps it to detect sources of sound; without them, its hearing capacity is greatly reduced. The edges of its feet are covered in long thick hair, which facilitates silent movement through snow. Lynx, especially with younger animals, roam widely, with ranges reaching more than 100 km. Also it has a territory (~ 10-20 km²), depending on how much food is available. The Iberian lynx marks its territory with its urine, droppings and scratch marks on the barks of trees.

During the mating season the female leaves her territory in search of a male. The typical gestation period is about two months; the cubs are born between March and September, with a peak of births in March and April. A litter consists of two or three (rarely one, or four to five) kittens weighing between 200–250 grams. The kittens become independent at 7–10 months old, but remain with the mother until around 20 months old. Survival of the young depends heavily on the availability of prey species. In the wild both males and females reach sexual maturity at one year old, though in practice they rarely breed until a territory becomes vacant; one female was known not to breed until five years old when its mother died. The maximum longevity in the wild is 13 years.

This lynx was once distributed over the entire Iberian Peninsula. It is now restricted to very small areas, with breeding only confirmed in two areas of Andalucía, southern Spain. The Iberian lynx prefers heterogeneous environments of open grassland mixed with dense shrubs such as Arbutus, lentisk, and Juniper; and trees such as Holm oak and Cork oak. Mainly in mountainous areas covered with vegetation; maquis or "Mediterranean forest".

The Iberian lynx is a critically endangered species. The Iberian lynx is the world's most threatened species of cat, and the most threatened carnivore in Europe.




































































понедељак, 22. децембар 2008.

Eurasian lynx (Lynx lynx)

The Eurasian lynx (Lynx lynx) is a medium-sized cat native to European and Siberian forests, where it is one of the predators. The Eurasian lynx is the biggest of the lynxes, ranging in length from 80 to 130 cm (32 to 51 in) and standing about 70 cm (28 in) at the shoulder. Males usually weigh from 18 to 30 kg (40 to 66 lb) and females weigh 18.1 kg (40 lb) on average. It has grey to reddish fur with black spots. The pattern of the fur is variable; lynxes with heavily spotted fur may exist close to conspecifics with plain fur. The Eurasian lynx is mainly nocturnal and lives solitarily as an adult. Moreover, the sounds this lynx makes are very quiet and seldom heard, so the presence of the species in an area may go unnoticed for years. Remnants of prey or tracks on snow are usually observed long before the animal is seen. Lynxes prey on hares, rabbits, rodents, wild boar, chamois, foxes, roe deer and reindeer. As with other cats, trying on larger prey presents a risk to the animal. The main method of hunting is stalking, sneaking and jumping on prey. In winter certain snow conditions make this harder and the animal may be forced to switch to larger prey. The European lynx likes rugged forested country providing plenty of hideouts and stalking opportunities. The hunting area of an average lynx is from 20 to 60 km² and it can tread more than 20 km during one night.

Subspecies:

The following are the recognized subspecies of the Eurasian lynx. Others have been proposed, but are now considered to be synonyms for these.
  • Lynx lynx lynx (Scandinavia, Central Europe, Eastern Europe and western Serbia, Caucasus, Siberia, Mongolia, Northern China, Korea)
  • Lynx lynx isabellinus (Central Asia)
  • Lynx lynx kozlovi (Central Siberia)

  • Lynx lynx sardiniae (Sardinia (extinct))
  • Lynx lynx stroganovi (Amur region)






























недеља, 21. децембар 2008.

Canadian lynx (Lynx canadensis)

The Canadian lynx (Lynx canadensis) is a North American mammal of the cat family, Felidae. It is a close relative of the Eurasian lynx (Lynx lynx). Some authorities regard both as conspecific. However, in some characteristics the Canadian lynx is more like the bobcat (Lynx rufus) than the Eurasian lynx. With the recognized subspecies, it ranges across Canada and into Alaska as well as some parts of the northern United States. With a dense silvery-brown coat, ruffed face and tufted ears, the Canadian lynx resembles the other species of the mid-sized Lynx genus. It is larger than the bobcat, with whom it shares parts of its range, and over twice the size of the domestic cat.

There had been debate over whether to classify this species as Lynx canadensis or Felis canadensis, part of a wider issue regarding whether the four species of Lynx should be given their own genus, or be placed as a subgenus of Felis. The Lynx genus is now accepted. Johnson et al. report that Lynx shared a clade with the Puma, leopard cat (Prionailurus), and domestic cat (Felis) lineages, dated to 7.15 Ma; Lynx diverged first, approximately 3.24 Ma. (There are significant confidence intervals for both figures.)

Subspecies

Three subspecies of the Canadian lynx are currently recognized:
  • L. canadensis canadensis
  • L. canadensis mollipilosus
  • L. canadensis subsolanus: The Newfoundland lynx is a subspecies of the Canadian lynx. It is larger than the mainland subspecies. This animal is known to have killed caribou calves when snowshoe hares were not available.
The appearance of the Canadian lynx is similar to that of the Eurasian lynx: the dense fur is silvery brown and may bear blackish markings. The Canadian is rather smaller than its Eurasian cousin, at an average size of 11 kg (24 lbs), 90 cm (36 in) in length and a shoulder height of 60 cm (24 in). Males are larger than females. In summer, its coat takes on a more reddish brown colour. This lynx has a furry ruff which resembles a double-pointed beard, a short tail with a black tip and long furry tufts on its ears. Its long legs with broad furred feet aid the Canadian lynx in traveling through deep snow.

The Canadian lynx is a solitary and secretive animal, usually active at night, and requires a large territory. It breeds in spring and two to four cubs are born. The survival of the young depends heavily on the availability of prey species.

The Canadian lynx hunts for hares, rodents, birds and sometimes kills larger animals such as deer. It relies mainly on hearing and sight to locate prey. In some areas the snowshoe hare is virtually the only prey of the Canadian lynx. The size of the Canadian lynx population tends to follow the approximately 10 year long rise and decline of snowshoe hare numbers.

Female Canadian lynx use maternal dens from birth of their young until they are weaned and able to forage for food themselves. Typically inside thickets of shrubs or trees or woody debris, dens are generally situated mid-slope and face south or southwest.

This cat is found in northern forests across almost all of Canada and Alaska. In addition there are large populations of this lynx in Montana, Idaho and Washington and a resident population exists in Yellowstone National Park, Wyoming that extends into the Greater Yellowstone Ecosystem. The Canadian lynx is rare in Utah, Minnesota, and New England; reintroduction efforts in Colorado have been ongoing since 1999, with the first wild-born kittens confirmed in 2003, with many successful kindles thereafter. The Canadian lynx is a threatened species in the contiguous United States.

In the United States, prior to 1999, lynx were known to occur only in Alaska, Washington state, Maine, Minnesota, Montana, Wyoming, Idaho and possibly in Michigan. Starting in 1999, the Colorado Division of Wildlife began a program reintroducing a wild lynx population back to Colorado. While showing early signs of promise, biologists say it will take more than a decade to determine whether the program is a success. However, in 2006 the first case of a native-born Colorado lynx giving birth since 1999 was documented: it gave birth to 2 kittens, affirming the possibility of successful reintroduction. In the United States, prior to 1999, lynx were known to occur only in Alaska, Washington state, Maine, Minnesota, Montana, Wyoming, Idaho and possibly in Michigan. Starting in 1999, the Colorado Division of Wildlife began a program reintroducing a wild lynx population back to Colorado. While showing early signs of promise, biologists say it will take more than a decade to determine whether the program is a success. However, in 2006 the first case of a native-born Colorado lynx giving birth since 1999 was documented: it gave birth to 2 kittens, affirming the possibility of successful reintroduction.

The Canadian lynx is trapped for its fur and has declined in many areas due to habitat loss, and the IUCN lists them as Least Concern. On 24 March 2000, the U.S. Fish & Wildlife Service issued its Final Rule, which designated the Canadian lynx a Threatened Species in the lower 48 states.