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Sapojnikov G.N. (1984). Distribution and number of several endangered mammals and birds of Tajikistan.
Abstract: Many years' data connected with the distribution and number of endangered species of animals as dhole (Cuon alpinus Pall), striped hyena (Hyaena hyaena L.), snow leopard (Uncia uncia Shreb.) and birds of Tajikistan are given. Area of snow leopard includes the most of mountain ridges in this country. The total number is evaluated about 160-200 individuals. The record quantity of legal harvested skins of snow leopard is 64 in 1946.
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Pokrovskiy V.S. (1976). Snow leopard, or irbis.
Abstract: It considers biology of snow leopard, provides data concerning its number and distribution, and shows environment correlation of the predator. Besides, it describes the ways of catching snow leopards, and conditions under which it can be kept in enclosures. Precise recommendations for the species protection are given.
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Pokrovskiy V.S. (1969). Mammals.
Abstract: The work presents a preliminary list of rare and endangered predatory and ungulate species. Snow leopard inhabits the mountain ridges of Tajikistan and Kyrgyzstan, and sometimes is met in the Altai and Tuva. Despite its habitat has not changed since recently, number of snow leopard is decreasing. Snow leopard population is reducing because this species is believed to be dangerous, as its skin is of high and sustainable demand, and because of high prices zoos will readily pay to buy snow leopards. Shepherds, local hunters and geologists hunt snow leopard.
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Novikov G.A. (1956). Sub-genus UNCIA Gray.
Abstract: Identification features of the sub-genus Uncia (colour; length of body and tail; shoulder height, and skull measurements) are given. Distribution, habitat, way of life, reproduction biology, behavioural patterns, migration routes, commercial value of snow leopard in the USSR is described.
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Meklenburtsev R.N. (1949). About ecology of ibex in Pamir (Vol. Vol. 28, edition 5.).
Abstract: Ibex is distributed all over the Pamir mountains, inhabiting rocks and canyons and ascending up to 5,500 m above sea level. In summer, ibex mostly feeds upon sedge and cereals, in winter wormwood. It keeps in herds containing 15 to 30 animals. The coupling period is December; kids being born at the beginning of June. The most dangerous predators are snow leopard and wolf. Ibex is a main commercial game species.
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Kolosov A.M. (1979). Genus Snow leopards Uncia.
Abstract: It provides description of appearance, distribution, behavioral patterns, and use of snow leopard in the USSR. The predator inhabits the mountains of Central Asia, east of the Amudarya river, along the ridges of Djungar Ala-Tau and Tarbagatai, South Altai, West and East Sayans. Its main food is ungulates, though it also preys on snow-cocks, marmots, small birds, and rodents. Sometimes attacks sheep. It has no enemy other than wolf; its diseases are not studied. Snow leopard is not dangerous for man. The fur-skin is used for making rugs and fur. Less than 1,000 animals are hunted globally. Before 1960, in the USSR less than 120 skins were annually purchased. Its total population is several thousand animals.
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Ale, S., & Brown, J. (2007). The contingencies of group size and vigilance (Vol. 9).
Abstract: Background: Predation risk declines non-linearly with one's own vigilance and the vigilance of others in the group (the 'many-eyes' effect). Furthermore, as group size increases, the individual's risk of predation may decline through dilution with more potential victims, but may increase if larger groups attract more predators. These are known, respectively, as the dilution effect and the attraction effect.
Assumptions: Feeding animals use vigilance to trade-off food and safety. Net feeding rate declines linearly with vigilance.
Question: How do the many-eyes, dilution, and attraction effects interact to influence the relationship between group size and vigilance behaviour?
Mathematical methods: We use game theory and the fitness-generating function to determine the ESS level of vigilance of an individual within a group.
Predictions: Vigilance decreases with group size as a consequence of the many-eyes and dilution effects but increases with group size as a consequence of the attraction effect, when they act independent of each other. Their synergetic effects on vigilance depend upon the relative strengths of each and their interactions. Regardless, the influence of other factors on vigilance – such as encounter rate with predators, predator lethality, marginal value of energy, and value of vigilance – decline with group size.
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Bogdanov O.P. (1961). Snow leopard (Felis uncia).
Abstract: In Uzbekistan, this species is distributed in spurs of Tien Shan and Gissar. It preys on ibex, rarer on argalis, roe-deers, young wild boars. In winter, it attacks livestock and sometimes feeds upon marmots and smaller rodents. Snow leopard attacks man very rarely, only when wounded. The economic significance of this species is low, since only few skins are traded. Its dressed skins are used as rugs.
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Joost van der Ven. (2002). Western Tien Shan: nature as it is.
Abstract: Some ideas of biodiversity conservation in the West Tien Shan (first of all large mammals such as ibex, moral, brown bear, and snow leopard) including an idea of limited trophy hunt are discussed.
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Kaletskiy A.A. (1974). May-“traven”.
Abstract: Diverse flora and fauna and seasonal phenomena in nature are stated in a popular form. Snow leopard is noticed to be a rare species, its population being significantly influenced by catching for zoos: over 400 snow leopards have been caught for this purpose over the last 35 years.
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