Monday 9 February 2015

Saiga antelope






The saiga (Saiga tatarica) is a critically endangered antelope which originally inhabited a vast area of the Eurasian steppe zone from the foothills of the Carpathian Mountains and Caucasus into Dzungaria and Mongolia. They also lived in North America during the Pleistocene. Today, the dominate subspecies (S. t. tatarica) is only found in one location in Russia (steppes of the northwest Precaspian region) and three areas in Kazakhstan (the Ural, Ustiurt and Betpak-dala populations). A proportion of the Ustiurt population migrates south to Uzbekistan and occasionally Turkmenistan in winter. It is extinct in China and southwestern Mongolia. The Mongolian subspecies (S. t. mongolica) is found only in western Mongolia. Some sources consider the Mongolian subspecies to be a distinct species, the Mongolian saiga (Saiga borealis).

The saiga typically stands 0.6–0.8 m (2 ft 0 in–2 ft 7 in) at the shoulder and weighs between 36 and 63 kg (79 and 139 lb). The horned males are larger than the hornless females. Their lifespans range from 6 to 10 years. The saiga is recognizable by an extremely unusual, over-sized, flexible nose structure, the proboscis. During summer migrations the saigas' nose helps filter out dust kicked up by the herd and heats up the animals blood. In the winter it heats up the frigid air before it is taken to the lungs.

During the Ice Age, the saiga ranged from the British Isles through Central Asia and the Bering Strait into Alaska and Canada's Yukon and Northwest Territories. By the classical age they were apparently considered a characteristic animal of Scythia, judging from the historian Strabo's description of an animal called the "Kolos" that was "between the deer and ram in size" and was (understandably but wrongly) believed to drink through its nose. At the beginning of the 18th century, it was still distributed from the shores of the Black Sea, the foothills of the Carpathian Mountains, and the northern edge of the Caucasus into Dzungaria and Mongolia.

After a rapid decline they were nearly completely exterminated in the 1920s, but they were able to recover. By 1950, two million of them were found in the steppes of the USSR. Their population fell drastically following the collapse of the USSR due to uncontrolled hunting and demand for horns in Chinese medicine. At one point, some conservation groups, such as the World Wildlife Fund, encouraged the hunting of this species, as its horn was presented as an alternative to that of a rhinoceros.

Today, the populations have again shrunk enormously — as much as 95% in 15 years, — and the saiga is classified as critically endangered by the IUCN. An estimated total number of 50,000 saigas survive today in Kalmykia, three areas of Kazakhstan and in two isolated areas of Mongolia. Another small population in the Pre-Caspian region of Russia remains under extreme threat.

Cherny Zemli Nature Reserve was created in Russia's Kalmykia Republic in the 1990s to protect the local saiga population. Kalmykia's president Kirsan Ilyumzhinov announced 2010 as the Year of Saiga in Kalmykia. In Kazakhstan, the number of saiga was recently found to be increasing, from around 21,000 at the begin of this millennium to around 81,000 in January 2010.[citation needed] However, in May 2010, an estimated 12,000 of the 26,000 Saiga population in the Ural region of Kazakhstan have been found dead. Although the deaths are currently being ascribed to pasteurellosis, an infectious disease that strikes the lungs and intestines, the underlying trigger remains to be identified.

Kazakhstan in November 2010 reaffirmed a ban on hunting saiga antelopes, and extended this ban until 2021, as the Central Asian nation seeks to save the endangered species.

The Mongolian saiga (S. t. mongolica) is found in a small area in western Mongolia around the Sharga and Mankhan Nature Reserves.

Currently, only the Moscow Zoo and Askania-Nova keep saigas. Cologne Zoological Garden and San Diego Zoo had them in the past. Pleistocene Park in northern Siberia plans to introduce the species.

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