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| Author | Ale, S.; Brown, J. | ||||
| Title | The contingencies of group size and vigilance | Type | Miscellaneous | ||
| Year | 2007 | Publication | Evolutionary Ecology Research, | Abbreviated Journal | |
| Volume | 9 | Issue | Pages | 1263-1276 | |
| Keywords | 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 | ||||
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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| Language | English | Summary Language | Original Title | ||
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| Notes | Approved | no | |||
| Call Number | SLN @ rana @ 886 | Serial | 53 | ||
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| Author | Fox, J.L.; Sinya, S.P.; Chundawat, R.S.; Das, P.K. | ||||
| Title | A Survey of Snow Leopard and Associated Species in the Himalaya of Northwestern India, Project Completion Report | Type | Miscellaneous | ||
| Year | 1986 | Publication | Abbreviated Journal | ||
| Volume | Issue | Pages | |||
| Keywords | Himalaya; India; prey; distribution; Arunachal; Jammu; Himachal-Pradesh; Uttar-Pradesh; Sikkim; hunting; poaching; pelts; livestock; surveys; field-work; herders; herding; parks; preserves; reserves; habiatat; conflict; human-interaction; behaviour; sanctuaries; scrapes; sprays; tracks; browse; 4220 | ||||
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| Notes | Full Text Available at URL | Approved | no | ||
| Call Number | SLN @ rana @ 410 | Serial | 289 | ||
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| Author | Sitnikov, P. | ||||
| Title | The Death of a Snow Leopard | Type | Conference Article | ||
| Year | 1988 | Publication | Abbreviated Journal | ||
| Volume | Issue | Pages | 7-8 | ||
| Keywords | siberia; Ussr; Irkutsk; behavior; interaction; human-interaction; 4150 | ||||
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| Publisher | Place of Publication | Helsinki, Finland | Editor | L.Blomqvist | |
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| Notes | Full text available at URLTitle, Monographic: International Pedigree Book of Snow LeopardsDate of Copyright: 1988 | Approved | no | ||
| Call Number | SLN @ rana @ 401 | Serial | 895 | ||
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| Author | Suryawanshi, K. R., Redpath, S., Bhatnagar, Y. V., Ramakrishnan, U., Chaturvedi, V., Smout, S. C., Mishra, C. | ||||
| Title | Impact of wild prey availability on livestock predation by snow leopards | Type | Journal Article | ||
| Year | 2017 | Publication | Royal Society Open Science | Abbreviated Journal | |
| Volume | Issue | Pages | 1-11 | ||
| Keywords | apparent competition, apparent facilitation, conservation conflicts, indirect interactions, predator� prey interactions, snow leopard | ||||
| Abstract |
An increasing proportion of the world�s poor is rearing livestock today, and the global livestock population is growing. Livestock predation by large carnivores and their retaliatory killing is becoming an economic and conservation concern. A common recommendation for carnivore conservation and for reducing predation on livestock is to increase wild prey populations based on the assumption that the carnivores will consume this alternative food. Livestock predation, however, could either reduce or intensify with increases in wild prey depending on prey choice and trends in carnivore abundance. We show that the extent of livestock predation by the endangered snow leopard Panthera uncia intensifies with increases in the density of wild ungulate prey, and subsequently stabilizes. We found that snow leopard density, estimated at seven sites, was a positive linear function of the density of wild ungulates�the preferred prey�and showed no discernible relationship with livestock density. We also found that modelled livestock predation increased with livestock density. Our results suggest that snow leopard conservation would benefit from an increase in wild ungulates, but that would intensify the problem of livestock predation for pastoralists. The potential benefits of increased wild prey abundance in reducing livestock predation can be overwhelmed by a resultant increase in snow leopard populations. Snow leopard conservation efforts aimed at facilitating increases in wild prey must be accompanied by greater assistance for better livestock protection and offsetting the economic damage caused by carnivores. |
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| Notes | Approved | no | |||
| Call Number | SLN @ rakhee @ | Serial | 1457 | ||
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| Author | Suryawanshi, K. R., Redpath, S. M., Bhatnagar, Y. V., Ramakrishnan, U., Chaturvedi, V., Smout, S. C., Mishra, C. | ||||
| Title | Impact of wild prey availability on livestock predation by snow leopards | Type | Journal Article | ||
| Year | Publication | Royal Society Open Science | Abbreviated Journal | ||
| Volume | Issue | Pages | 1-11 | ||
| Keywords | apparent competition, apparent facilitation, conservation conflicts, indirect interactions, predator� prey interactions, snow leopard | ||||
| Abstract |
An increasing proportion of the world�s poor is rearing livestock today, and the global livestock population is growing. Livestock predation by large carnivores and their retaliatory killing is becoming an economic and conservation concern. A common recommendation for carnivore conservation and for reducing predation on livestock is to increase wild prey populations based on the assumption that the carnivores will consume this alternative food. Livestock predation, however, could either reduce or intensify with increases in wild prey depending on prey choice and trends in carnivore abundance. We show that the extent of livestock predation by the endangered snow leopard Panthera uncia intensifies with increases in the density of wild ungulate prey, and subsequently stabilizes. We found that snow leopard density, estimated at seven sites, was a positive linear function of the density of wild ungulates�the preferred prey�and showed no discernible relationship with livestock density. We also found that modelled livestock predation increased with livestock density. Our results suggest that snow leopard conservation would benefit from an increase in wild ungulates, but that would intensify the problem of livestock predation for pastoralists. The potential benefits of increased wild prey abundance in reducing livestock predation can be overwhelmed by a resultant increase in snow leopard populations. Snow leopard conservation efforts aimed atfacilitating increases in wild prey must be accompanied by greater assistance for better livestock protection and offsetting the economic damage caused by carnivores. |
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| Notes | Approved | no | |||
| Call Number | SLN @ rakhee @ | Serial | 1452 | ||
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| Author | Pal, R., Panwar, A., Goyal, S. P., Sathyakumar, S. | ||||
| Title | Changes in ecological conditions may influence intraguild competition: inferring interaction patterns of snow leopard with co-predators | Type | Journal Article | ||
| Year | 2022 | Publication | PeerJ | Abbreviated Journal | |
| Volume | 10 | Issue | e14277 | Pages | 1-26 |
| Keywords | Common leopard, Woolly wolf, Occupancy, Interspecific interactions, Temporal overlap, Scat analysis | ||||
| Abstract |
Background: Large-scale changes in habitat conditions due to human modifications and climate change require management practices to consider how species communities can alter amidst these changes. Understanding species interactions across the gradient of space, anthropogenic pressure, and season provide the opportunity to anticipate possible dynamics in the changing scenarios. We studied the interspecific interactions of carnivore species in a high-altitude ecosystem over seasonal (summer and winter) and resource gradients (livestock grazing) to assess the impact of changing abiotic and biotic settings on coexistence. Methods: The study was conducted in the Upper Bhagirathi basin, Western Himalaya, India. We analyzed around 4 years of camera trap monitoring data to understand seasonal spatial and temporal interactions of the snow leopard with common leopard and woolly wolf were assessed in the greater and trans-Himalayan habitats, respectively. We used two species occupancy models to assess spatial interactions, and circadian activity patterns were used to assess seasonal temporal overlap amongst carnivores. In addition, we examined scats to understand the commonalities in prey selection. Results: The result showed that although snow leopard and wolves depend on the same limited prey species and show high temporal overlap, habitat heterogeneity and differential habitat use facilitate co-occurrence between these two predators. Snow leopard and common leopard were spatially independent in the summer. Conversely, the common leopard negatively influences the space use of snow leopard in the winter. Limited prey resources (lack of livestock), restricted space (due to snow cover), and similar activity patterns in winter might result in strong competition, causing these species to avoid each other on a spatial scale. The study showed that in addition to species traits and size, ecological settings also play a significant role in deciding the intensity of competition between large carnivores. Climate change and habitat shifts are predicted to increase the spatial overlap between snow leopard and co-predators in the future. In such scenarios, wolves and snow leopards may coexist in a topographically diverse environment, provided sufficient prey are available. However, shifts in tree line might lead to severe competition between common leopards and snow leopards, which could be detrimental to the latter. Further monitoring of resource use across abiotic and biotic environments may improve our understanding of how changing ecological conditions can affect resource partitioning between snow leopards and predators. |
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| Notes | Approved | no | |||
| Call Number | SLN @ rakhee @ | Serial | 1701 | ||
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| Author | Kachel, S. M., Karimov, K., Wirsing, A. J. | ||||
| Title | Predator niche overlap and partitioning and potential interactions in the mountains of Central Asia | Type | Journal Article | ||
| Year | 2022 | Publication | Journal of Mammalogy | Abbreviated Journal | |
| Volume | XX(X) | Issue | Pages | 1-11 | |
| Keywords | intraguild interactions, niche partitioning, snow leopard, spatial capture–recapture, wolf | ||||
| Abstract |
Direct and indirect interactions among predators affect predator fitness, distribution, and overall community structure. Yet, outside of experimental settings, such interactions are difficult to observe and thus poorly understood. Patterns of niche overlap among predators reflect and shape community interactions and may therefore help elucidate the nature and intensity of intraguild interactions. To better understand the coexistence of two apex predators, snow leopards (Panthera uncia) and wolves (Canis lupus), we investigated their spatial, temporal, and dietary niche overlap in summer in the Pamir Mountains of Tajikistan. We estimated population- level space use via spatial capture–recapture models based on noninvasive genetics and camera traps, diel activity patterns based on camera trap detections, and diet composition from prey remains in carnivore scats, from which we estimated coefficients between 0 and 1 for overlap in space, time, and diet, respectively. Snow leopards and wolves displayed moderate spatial partitioning (0.26, 95% confidence interval [CI]: 0.17–37), but overlapping temporal (0.77, 95% CI: 0.64–0.90) and dietary (0.97, 95% CI: 0.80–0.99) niches. Both predators relied on seasonally abundant marmots (Marmota caudata) rather than wild ungulates, their typical primary prey, suggesting that despite patterns of overlap that were superficially conducive to exploitation competition and predator facilitation, prey were likely not a limiting factor. Therefore, prey-mediated interactions, if present, were unlikely to be a major structuring force in the ecosystem. By implication, carnivore conservation planning and monitoring in the mountains of Central Asia should more fully account for the seasonal importance of marmots in the ecosystem. | ||||
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| Notes | Approved | no | |||
| Call Number | SLN @ rakhee @ | Serial | 1680 | ||
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| Author | Roth, T.L.; Howard, J.G.; Donoghue, A.M.; Swanson, W.F.; Wildt, D.E. | ||||
| Title | Function and culture requirements of snow leopard (Panthera uncia) spermatozoa in vitro | Type | Journal Article | ||
| Year | 1994 | Publication | J Reprod Fertil | Abbreviated Journal | |
| Volume | 101 | Issue | 3 | Pages | 563-569 |
| Keywords | Animal; Carnivora; physiology; Cell; survival; Cells; Cultured; Comparative; study; Culture; Media; Female; Male; Pentoxifylline; Sperm; Motility; Ovum; Interactions; Spermatozoa; cytology; Support; Non-U.S.Gov't; U.S.Gov't; P.H.S.; browse; non; us; gov't; government; 190 | ||||
| Abstract |
Electroejaculates from eight snow leopards were used to determine how the motility of spermatozoa was influenced by (i) type of media (Ham's F10, PBS, human tubal fluid or RPMI-1640); (ii) holding temperature (23 degrees C versus 37 degrees C); (iii) washing of spermatozoa and (iv) a sperm metabolic enhancer, pentoxifylline. The duration of sperm motility was assessed by evaluating samples in each treatment every hour for 6 h and a sperm motility index (a value combining percentage sperm motility and rate of forward progression) calculated. Spermatozoa from the Ham's F10, PBS and PBS plus pentoxifylline treatments were also co-incubated with zona-intact, domestic cat eggs that were fixed and evaluated for spermatozoa bound to the zona pellucida, penetrating the outer and inner layers of the zona pellucida and within the perivitelline space. During the 6 h co-incubation, the sperm motility index in PBS with pentoxifylline was greater (P < 0.05) than in PBS alone which, in turn, was greater (P < 0.05) than in the other three test media. Washing the spermatozoa enhanced (P < 0.05) motility in both PBS and PBS plus pentoxifylline relative to unwashed samples, but there was no effect (P > 0.05) of holding temperature. Pentoxifylline supplementation enhanced (P < 0.05) the proportion of cat eggs with bound, but not penetrated, snow leopard spermatozoa in the inner layer of the zona pellucida, and there were no spermatozoa in the perivitelline space.(ABSTRACT TRUNCATED AT 250 WORDS) | ||||
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| ISSN | 0022-4251 | ISBN | Medium | ||
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| Notes | Document Type: eng | Approved | no | ||
| Call Number | SLN @ rana @ 253 | Serial | 828 | ||
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| Author | Khan, B., Ablimit, A., Nawaz, M. A., Ali, R., Khan, M. Z., Jaffaruddin, Karim, R. | ||||
| Title | Pastoralist experience and tolerance of snow leopard, wolf and lynx predation in Karakoram Pamir Mountains | Type | Journal Article | ||
| Year | 2014 | Publication | Journal of Biodiversity and Envirnomental Sciences | Abbreviated Journal | |
| Volume | 5 | Issue | 4 | Pages | 214-229 |
| Keywords | Carnivore, herbivores, interaction, Karakoram, Pamir, Khunjerab, Taxkorgan, China, Pakistan | ||||
| Abstract |
Human-carnivore conflict is a common conservation and livelihood issue in mountain communities. This study was conducted to understand nature and extent of socio-ecological interaction between pastoralism and wildlife conservation in cold deserts of Karakoram Pamir Mountains (KPM) between China and Pakistan. Study revealed that livestock depredation is a burning issue in KPM with varying intensity from place to place, depending upon wild prey abundance, herd size, herding practices, predator type and age. Snow leopard, wolf and lynx were the major predators, while Brown bear despite its presence was reported being less fatal to livestock. Snow leopard killed highest number of animals (88.7% n=1440) mostly sheep and goats whereas, wolf killed more juvenile yaks. Lynx was found occasionally predating on young domestic crop. Highest number of kills was recorded from pastures during summer months (July-Aug) when animals were free grazing or were kept inside pens at night. Wild prey base being abysmally low, livestock seemed offering a considerable portion of diet to carnivores. Despite considerable losses from carnivores, more respondents in KNP (Pakistan) buffer zone had sympathies for predators compared to those in TNR (China) who were annoyed of the carnivores. Although people attributed escalating human-carnivore conflict to a higher level of protection to wild animals in Protected Areas (PA) but efforts are still needed to judiciously integrate conservation with local livelihood and development needs, otherwise herders may continue losing their livestock to predators and retaliatory killing of endangered carnivore species i.e., Snow leopard and Wolf may continue unabated and would further destabilize the fragile mountain ecosystem. | ||||
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| Notes | Approved | no | |||
| Call Number | SLN @ rakhee @ | Serial | 1418 | ||
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| Author | Vipin, Golla, T. R., Sharma, V., Kumar, B. K., Gaur, A. | ||||
| Title | Kleptoparasitic interaction between Snow Leopard Panthera uncia and Red Fox Vulpes vulpes suggested by circumstantial evidence in Pin Valley National Park, India | Type | Journal Article | ||
| Year | 2022 | Publication | Journal of Threatened Taxa | Abbreviated Journal | |
| Volume | 14 | Issue | 10 | Pages | 21928-21935 |
| Keywords | Animal interaction, carnivore, mammals, prey, Trans-Himalaya. | ||||
| Abstract |
In the present study, we describe an interspecific kleptoparasitic interaction between two sympatric mammalian carnivores in the high altitudinal Trans-Himalaya region of Himachal Pradesh, India. The study was based on the inferences drawn from the circumstantial evidence (direct and indirect) noticed in the study area in Pin Valley National Park. The inferences from the analysis of the evidence suggested the interaction between a Snow Leopard Panthera uncia, a Red Fox Vulpes vulpes, and a donkey. The arrangement of evidence in a sequential manner suggested that a donkey was killed by a Snow Leopard and a Red Fox stole the food from the carrion of the Snow Leopard’s prey. The Red Fox was killed by the Snow Leopard, which was caught while stealing. The present study represents an example of kleptoparasitic interaction between the Snow Leopard and the Red Fox. This study also proves that such interactions may cost the life of a kleptoparasite and supports the retaliation behaviour of Snow Leopards. | ||||
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| Notes | Approved | no | |||
| Call Number | SLN @ rakhee @ | Serial | 1702 | ||
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