Minggu, 14 Oktober 2012

Arctic Fox


The Biggest Animals Kingdom and in The World | Arctic Fox | Arctic Fox lives in some of the extreme cold of the planet.  Arctic Fox has so his good ear is able to locate the position of prey under the snow. Arctic Fox tends to be active from early September to early May. Foxes tend to form monogamous pairs in the breeding season. Young child from the previous year may remain with their parents to help rear younger siblings. Arctic fox diet, in general, find any small animal it: lemmings, voles, hares, owls, eggs, and carrion, Lemmings, etc., are the most common prey. A family of foxes can eat dozens of lemmings each day. In April and May the Arctic Fox also fall prey ringed seal pups when the young animals are confined to a snow den and are relatively helpless. If there is an oversupply of food hunted, the Arctic Fox will bury what the family can not eat. When its normal prey is scarce, the arctic fox destroyed the remains and feces even larger predators such as polar bears, though bears prey includes the arctic fox itself.

The tail is 31 cm (12.2 inches) long in men and 30 cm (11.8 inches) in women. It is 25-30 cm (9.8 to 11.8 inches) in height at the shoulder average male weighs 3.5 kg (7.7 lb) with a range from 3.2 to 9.4 kg (7, 1 -21 £), while females average 2.9 kg (6.4 lb) with a range from 1.4 to 3.2 kg (3.1 to 7.1 lb) Arctic Fox one circumpolar range of what means that it found in the Arctic, including the outer edges of Greenland, Russia, Canada, Alaska and Svalbard and subarctic and alpine as Iceland and mainland alpine Scandinavia. Estimate of the total population in Norway, Sweden and Finland, the only 120 adults.

Arctic fox is the only native land mammal to IcelandArctic Fox Súðavík center contains an exhibition on the Arctic fox and conducts studies on the impact of tourism on the population Arctic fox species richness tends to loop with the population of lemmings and voles (cycle 3-to-4-years) fluctuate. Populations are particularly vulnerable to over the years when prey population crashes and uncontrolled fall uprooted nearly two subpopulations.

The Arctic fox fur, blue schist were expressed recessive genes invaluable. Were various previously fox-free Aleutian promoted in 1920. Arctic Fox Red Fox is losing ground to the sea. Red foxes dominate, kill to start where their ranges overlap arctic foxes and their kit. An alternative explanation involves gains red fox gray wolf: Historically, it has maintained the number of red foxes down, but the wolf was hunted almost to extinction in much of its former range, the Red Fox population grew larger, and in the predator niche northern Europe, there are programs in place that allow the hunting of Red Fox in the Arctic fox.

Moreover, the figures vary between years due to variations in the large population. However, the total population of arctic foxes of the order of several hundreds of thousands of animals. The world's population is at risk, but why two polar foxes subpopulations. Estimate the total population for 1997 is around 60 adults in Sweden, 11 adults in Finland and 50 in Norway. On a population of around 20 adults Fennoscandia then population numbers for a total of 140 adult breeding. Even after the local lemming peaks, the arctic fox population tends to collapse to a level dangerously close to non-profitability.
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