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Aryal, A. |
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Title |
Final Report On Demography and Causes of Mortality of Blue Sheep (Pseudois nayaur) in Dhorpatan Hunting Reserve in Nepal |
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2009 |
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1-53 |
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Report; mortality; blue; blue sheep; blue-sheep; sheep; Pseudois; pseudois nayaur; Pseudois-nayaur; nayaur; Dhorpatan; hunting; reserve; Nepal; biodiversity; research; training; snow; snow leopard; snow-leopard; leopard; conservation; program; population; Population-Density; density; densities; change; Sex; study; area; High; poaching; Pressure; reducing; number; predators; predator; poison; wolf; wolves; canis; Canis-lupus; lupus; wild; wild boar; prey; prey species; prey-species; species; scats; scat; value; fox; cover; deer; diet; leopards; pika; snow leopards; snow-leopards; soil; Relationship |
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A total of 206 individual Blue sheep Pseudois nayaur were estimated in Barse and Phagune blocks of Dhorpatan Hunting Reserve (DHR) and population density was 1.8 Blue sheep/sq.km. There was not significant change in population density from last 4 decades. An average 7 animals/herd (SD-5.5) were classified from twenty nine herds, sheep per herds varying from 1 to 37. Blue sheep has classified into sex ratio on an average 75 male/100females was recorded in study area. The sex ratio was slightly lower but not significantly different from the previous study. Population of Blue sheep was seen stable or not decrease even there was high poaching pressure, the reason may be reducing the number of predators by poison and poaching which has
supported to increase blue sheep population. Because of reducing the predators Wolf Canis lupus, Wild boar population was increasing drastically in high rate and we can observed wild boar above the tree line of DHR. The frequency of occurrence of different prey species in scats of different predators shows that, excluding zero values, the frequencies of different prey species were no significantly different (ö2= 10.3, df = 49, p > 0.05). Most of the scats samples (74%) of Snow leopard, Wolf, Common Leopard, Red fox's cover one prey species while two and three species were present in 18% and 8%, respectively. Barking deer Muntiacus muntjak was the most frequent (18%) of total diet composition of common leopards. Pika Ochotona roylei was the most frequent (28%), and Blue sheep was in second position for diet of snow leopards which cover 21% of total diet composition. 13% of diet covered non-food item such as soil, stones, and vegetable. Pika was most frequent on Wolf and Red fox diet which covered 32% and 30% respectively. There was good positive relationship between the scat density and Blue sheep consumption rate, increasing the scat density, increasing the Blue sheep consumption rate. Blue sheep preference by different predators such as Snow leopard, Common leopard, Wolf and Red fox were 20%, 6%, 13% and 2% of total prey species respectively. |
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The Biodiversity Research and Training Forum (BRTF) Nepal. Email: savefauna@yahoo.com
Submitted to Snow Leopard Conservation Grants Program, USA. |
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SLN @ rana @ 1064 |
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104 |
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Author |
Vyrypaev V.A. |
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Title |
Ecologic prerequisites for predatory mammal conservation in the mountain biocenosis of the Issyk-Kul area |
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Miscellaneous |
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1979 |
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18-19 |
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Kyrgyzstan; predators; snow leopard; preys; threats.; 8550; Russian |
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A decreasing number of predatory mammal species is connected with anthropogenic activity. Number of snow leopard is directly dependent on anthropogenic activity. A snow leopard population directly depends on food resources, such as ibex, marmot, rarer – argali and snow-cock in summer, and ibex, roe-deer, and rarer argali in winter. |
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Full text available in RussianJournal Title: The ecologic fundamentals of protection and sustainable use of predatory mammals. |
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SLN @ rana @ 832 |
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995 |
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Author |
Lydekker, R. |
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The Game Animals of India, Burma, Malaya, and Tibet |
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1907 |
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prey; predators; game; India; Burma; Malaya; Tibet; browse; 1930 |
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Rowland Ward |
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London |
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ProCite field [12]: (1907) |
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SLN @ rana @ 9 |
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630 |
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Poyarkov, A.D.; Subbotin, A.E. |
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Title |
Strategic Priorities and the System of Measures for Snow Leopard Conservation in Russia |
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2002 |
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snow; leopard; range; conservation; habitats; cooridoors; reserve; reserves; Russia; competitors; Competition; predators prey; population; poaching; smuggling; grazers; program; 5060 |
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Islt |
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Title, Monographic: Proceedings of the Snow Leopard Survival SummitPlace of Meeting: Seattle,WA |
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SLN @ rana @ 492 |
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790 |
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Author |
Ale, S.; Brown, J. |
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Title |
The contingencies of group size and vigilance |
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Miscellaneous |
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2007 |
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Evolutionary Ecology Research, |
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9 |
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1263-1276 |
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attraction effect,contingency,dilution effect,fitness,group-size effect,many-eyes effect,predation risk,vigilance behaviour; predation; decline; potential; predators; predator; feeding; Animals; Animal; use; food; effects; Relationship; behaviour; methods; game; Interactions; interaction; factor; value; Energy |
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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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SLN @ rana @ 886 |
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53 |
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The Snow Leopard Conservancy |
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Local People's Attitudes toward Wildlife Conservation in the Hemis National Park, with Special Reference to the Conservation of Large Predators |
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2003 |
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7 |
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1-29 |
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local; local people; people; attitudes; attitude; wildlife; conservation; Hemis; national; national park; National-park; park; large; large predators; predators; predator; field; Jackson |
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Sonoma, California |
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SLC Field Series Document No 7. Prepared by R. Jackson, R. Wangchuk, and J. Dadul. Sonoma, California. |
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SLN @ rana @ 1012 |
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964 |
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