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Razmakhnin V.E. (1977). Siberian wild ibex.
Abstract: It provides a detailed description of biology, distribution, geographic variability, behavior, and locomotion features of ibex in the USSR. Its population was defined as 100,000 animals, main enemies being wolf, snow leopard, and golden eagle. Wolf mainly preys on ibex at the end of winter; old males, weakened during the heat mostly becoming a prey. Snow leopards prey on ibexes all year round. Golden eagles mostly prey on young ibexes.
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Cherkasova M.V. (1982). Predators.
Abstract: Among species included in the Red Data Book of the USSR, predators occupy the first place; of them, unconditional leadership belongs the cat family species. Nine of eleven species of the family are referred to as rare and endangered ones. In the past snow leopard (Uncia uncia) inhabited all mountains on the south of the USSR from Tien Shan and Pamir to Transbaikalia. Now it no longer inhabits many of its previous habitats and has become rare, everywhere. Its total population in the USSR is no more than 1000 animals. At the beginning of XX century there were cases that such an amount of snow leopard (i.e. 1,000) was hunted during one year. Until recently, hunting the species was allowed all year round and even encouraged.
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Kaletskiy A. (1978). They must live (Vol. N 11.).
Abstract: Among large predators included in the Red Data Book of the USSR and Red List of IUCN the author describes snow leopard. A population of snow leopard in the USSR is estimated to be 500 animals, and no more than 1,000 in the world. In the past, irbis was believed to be a harmful animal and hunting for this species was encouraged. Today, population of the predator is reducing because of poaching and decreasing number of species it preys on such as ibex, wild sheep, wild boar, and marmots. The situation is exacerbated by biological features of this species first of all its slow rate of reproduction. It is concluded that snow leopard needs urgent protection measures since the species is on the verge of disappearance.
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Sosnovskiy I.P. (1987). Snow leopard or irbis.
Abstract: In a popular form, it tells about rare vertebrate animals included in the Red Data Book of the USSR, their biology, behavioral patterns, threats and measures being taken to protect them. Total number of snow leopard in the USSR is defined as 2,000 animals. 200 snow leopards live in zoos throughout the world. The animals successfully reproduce themselves in the Moscow, Kaunas, and Alma-Ata zoos. Snow leopard's maximum life expectancy in enclosures is 22 years.
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Pokrovskiy V.S. (1967). Special protected areas (zakazniks) in areas of existence of rare and especially useful species of animals.
Abstract: The description of nature reserves of USSR is given. The key species living within these reserves are specified. The snow leopard is recorded for zakaznik located in Koksu River upper, Kazakhstan.
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Vereschagin N.K., S. T. B. (1976). Rare mammals in the USSR: protection challenges.
Abstract: A group of rare and endangered species was segregated within the game and non-game mammals of the USSR. Some species in the group were formerly referred to game species. But due to over-hunting and the absence of measures aimed at their reproduction the population dropped sharply. Mammal fauna of the USSR includes more than 80 species that require special protection. The Red list of IUCN includes, among the others, white bear, Transcaucasian sub-species of brown bear, Amur and Turan tigers, snow leopard, Caucasian and Amur leopards, caracal, cheetah, Tien-Shan and Ussuri sub-species of dhole, Atlantic walrus, island seal, kulan, Bukhara red deer, New Land reindeer, goitered gazelle, Menzbier's marmot.
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Abramov V.K. (1974). Ecological basis of the conservation of large predators in USSR (Vol. Vol.I.).
Abstract: Problems of conservation of large predators (Felis tigris L., Panthera pardus L., Felis uncia Schreb., Acinonyx jubatus Schreb., Hyaena h¢…†n… L., Cuon alpinus Pall., Ursus maritimus Phipps, U.tibetanus Cuv.) inhabiting territory of USSR are discussed.
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Naumov S.P. (1948). The cats – Felidae. Mountain regions of USSR.
Abstract: Description of Felidae family species (Tigris tigris, Leopardus (Pardus) pardus and Unci uncia) is given. In USSR snow leopard inhabited in mountain ridges of Middle Asia and Altai.
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Naumov S.P. (1973). The cats – Felidae.
Abstract: Description of Felidae family species (Tigris tigris, D…nthera d…rdus, Unci uncia, Felis silvestris, Felis ocreata, Felis †udtilur…, L¢no l¢no, A¤tŒn¢o jub…tus) is given. Snow leopard inhabited in mountain ridges of Middle and Central Asia.
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Naumov S.P. (1950). The cats – Felidae.
Abstract: Description of Felidae family species (Tigris tigris, Unci uncia, Felis silvestris, Felis ocreata, Felis †udtilur…, L¢no l¢no, A¤tŒn¢o jub…tus) is given. Snow leopard inhabited in mountain ridges of Middle and Central Asia.
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