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Author Shrestha, B., Aihartza, J., Kindlmann
Title Diet and prey selection by snow leopards in the Nepalese Himalayas Type Journal Article
Year 2018 Publication PLoS ONE Abbreviated Journal
Volume Issue Pages 1-18
Keywords
Abstract Visual attractiveness and rarity often results in large carnivores being adopted as flagship

species for stimulating conservation awareness. Their hunting behaviour and prey selection

can affect the population dynamics of their prey, which in turn affects the population dynamics

of these large carnivores. Therefore, our understanding of their trophic ecology and foraging

strategies is important for predicting their population dynamics and consequently for

developing effective conservation programs. Here we concentrate on an endangered species

of carnivores, the snow leopard, in the Himalayas. Most previous studies on snow leopard

diet lack information on prey availability and/or did not genetically check, whether the

identification of snow leopard scats is correct, as their scats are similar to those of other

carnivores. We studied the prey of snow leopard in three Himalayan regions in Nepal

(Sagarmatha National Park (SNP), Lower Mustang (LM) and Upper Manang (UM) in the

Annapurna Conservation Area, during winter and summer in 2014&#65533;2016. We collected 268

scats along 139.3 km linear transects, of which 122 were genetically confirmed to belong to

snow leopard. Their diet was identified by comparing hairs in scats with our reference collection

of the hairs of potential prey. We determined prey availability using 32&#65533;48 camera-traps

and 4,567 trap nights. In the SNP, the most frequent prey in snow leopard faeces was the

Himalayan tahr in both winter and summer. In LM and UM, its main prey was blue sheep in

winter, but yak and goat in summer. In terms of relative biomass consumed, yak was the

main prey everywhere in both seasons. Snow leopard preferred large prey and avoided

small prey in summer but not in winter, with regional differences. It preferred domestic to

wild prey only in winter, and in SNP. Unlike most other studies carried out in the same area,

our study uses genetic methods for identifying the source of the scat. Studies solely based

on visual identification of samples may be strongly biased. Diet studies based on frequency

of occurrence of prey tend to overestimate the importance of small prey, which may be consumed

more often, but contribute less energy than large prey. However, even assessments

based on prey biomass are unlikely to be accurate as we do not know whether the actual

size of the prey consumed corresponds to the average size used to calculate the biomass

eaten. For example, large adults may be too difficult to catch and therefore mostly young animals are consumed, whose weight is much lower. We show that snow leopard consumes

a diverse range of prey, which varies both regionally and seasonally. We conclude that in

order to conserve snow leopards it is also necessary to conserve its main wild species of

prey, which will reduce the incidence of losses of livestock.
Address
Corporate Author (up) Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number SLN @ rakhee @ Serial 1476
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Author Karnaukhov, A. S., Malykh, S. V., Korablev, M. P., Kalashnikova, Y. M., Poyarkov, A. D., Rozhnov, V. V.
Title Current Status of the Eastern Sayan Snow Leopard (Panthera uncia) Grouping and Its Nutritive Base Type Journal Article
Year 2018 Publication Biology Bulletin Abbreviated Journal
Volume 45 Issue 9 Pages 1106-1115
Keywords Panthera uncia, Bol&#65533; shoi Sayan, Munku-Sardyk, Tunkinskie Gol&#65533; tsy, distribution area, molecular genetic analysis, modeling of potential habitats
Abstract A field survey of snow leopard (Panthera uncia) habitats was carried out in the southeastern part of

the Eastern Sayan Mountains (Okinskii and Tunkinskii districts of the Republic of Buryatia and the Kaa-

Khemskii district of Tuva Republic). Seven or eight adult snow leopards were observed as constant inhabitants

of the Tunkinskie Gol'tsy, Munku-Sardyk, and Bol'shoi Sayan mountain ridges. The presence of eight

snow leopards was confirmed using DNA-based analyses of scats collected in 2014 – 2016. The main prey species

of the snow leopard in Eastern Sayan is the Siberian ibex (Capra sibirica), but its abundance has steadily

decreased over the past 20 years. The red deer (Cervus elaphus) and the wild boar (Sus scrofa), which were

some of the most numerous ungulates in the survey area, are replacing the Siberian ibex in the snow leopard's

diet. In addition, the mountain hare (Lepus timidus) is also of importance to the snow leopard's diet.
Address
Corporate Author (up) Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number SLN @ rakhee @ Serial 1482
Permanent link to this record
 
 
Author Esson, C. L.
Title A One Health approach to investigating the health and prevalence of zoonotic pathogens in snow leopards, sympatric wildlife, domestic animals and humans in the South Gobi Desert in Mongolia Type Journal Article
Year 2018 Publication PhD Thesis Abbreviated Journal
Volume Issue Pages 1-242
Keywords
Abstract The endangered Snow leopard (Panthera uncia) inhabits the high mountain regions through central Asia and is subjected to numerous threats including poaching for traditional Chinese medicine, retribution killing for preying on domestic stock, and habitat fragmentation. However the occurrence and impact of disease on snow leopard populations is unknown. As emerging infectious diseases of wildlife can be an insidious yet important cause of population decline due to mortality or reproductive failure, my study aimed initially to gain knowledge of pathogens circulating among wild and domestic hosts in this region. I used a broad One Health approach to survey a range of species to collect data on disease occurrence that would be useful in improving human and livestock health, as well as snow leopard conservation.

This study is set in the Tost Mountains of the South Gobi Desert of Mongolia and was prompted due to the unexplained deaths of four snow leopards detected within a short timeframe during an ecological study by members of the Snow Leopard Trust. However, investigating disease occurrence in remote, rare and endangered species is a challenge due to inaccessibility of sites, difficulty of capture, and processing samples without facilities.

A One Health approach uses multidisciplinary expertise such as ecological, medical and veterinary, to understand host, pathogen and environmental disease factors. This approach is especially useful for diseases that transfer between people, domestic animals and wildlife. As snow leopards are a rare and elusive species, my surveys were aimed at assessing pathogens circulating in snow leopards as well as in sympatric wild and domestic animals. I collected samples from the following hosts: snow leopards – the target species; rodents which are ubiquitous over the study area and are a suitable sentinel species; ibex which are a native ungulate and natural prey species of the snow leopard; domestic goats which are also a prey species of the snow leopard; free-ranging domestic dogs which interact with the goats. The local indigenous people interact with all these species including snow leopards, mostly via retribution killing. Water samples were also collected from waterholes and wells, which are communal meeting places as drinking sources for all species, hence enabling pathogen exchange. Samples collected included blood samples, faecal samples or rectal swabs and ectoparasites if present. These samples were transported to laboratories in Sweden and Belgium where I conducted diagnostic assays for zoonotic pathogens that are present in other regions of Mongolia and impact the health of humans and animals. I used enzyme- linked immune assay (ELISA), polymerase chain reaction (PCR) and next-generation sequencing (NGS) for pathogens including Coxiella burnetii, Toxoplasma gondii, Leptospira spp., Brucella spp., Yersinia pestis and tick borne encephalitis virus. Serovars of Leptospira were elucidated using microscopic agglutination tests (MAT). The dog blood samples were also tested for canine distemper virus. Ticks, faeces, rectal swabs and water were tested for bacteria, Echinococcus, Giardia and Cryptosporidium using PCR and NGS.

Health records for humans and animals in the region were not available so, in addition to testing animal samples, I used questionnaire surveys to obtain information on perceptions of the herders concerning health of their families, their domestic animals and wildlife. Questions also assessed preventative health management and treatments used.

Over three field trips I caught and sampled twenty snow leopards, 177 rodents (8 species), 41 dogs and 270 goats. I also sampled 11 waterholes/wells, and preserved 18 ticks, hundreds of fleas and collected faecal samples from ibex.

Most animals that were sampled and examined clinically appeared in good health, but the serosurvey revealed a moderate to high level of exposure to serious pathogens: C. burnetii, T. gondii and Leptospira spp. There were no published reports of human infections with these pathogens in the study area, which is likely due to a lack of testing.

Snow leopards had the highest prevalence of C. burnetii antibodies (25%), followed by rodents (16%), dogs (10%) and goats (9.5%). Goats had the highest prevalence of T. gondii antibodies (90%), dogs (66%), snow leopards (20%) and rodents (16%). Rodents had the highest prevalence of Leptospira spp. (34%), followed by snow leopards (20%) and dogs (5%). Serovars interrogans Australis was identified in the rodents and snow leopards and interrogans Ictohaemorrhagiae was identified in the rodents and dogs. Other serovars were also present from the results of the ELISA but did not match those listed in the MAT panel, so could not be identified. Goats were not tested for infection with leptospirosis. Brucella was not identified in the goats even though it occurs at high prevalence in stock in the rest of Mongolia where it is a large health and economic concern. In rodents, the zoonotic Puumala and Seoul hantavirus were identified for the first time in Mongolia. Analysis of data from rodents showed the pathogens detected (C. burnetii, T.gondii, Hanta virus and Leptospira spp.) differed significantly in prevalence, with a strong year effect driven mainly by Leptospira, which increased in prevalence across the three year study period. Toxoplasma gondii differed slightly in prevalence among rodent species. There was no significant difference in prevalence of interaction of pathogens among years or rodent species.

Poor health was detected in goats with 10 out of the 14 goats tested via haematology and biochemistry being anaemic with haematocrits less than 20%. Haematology and biochemistry values for the other animal species appeared normal. I established haematology and biochemistry reference tables for two rodent species – red-cheeked ground squirrels and jerboas.

Water samples were negative for serious pathogens. Fleas were negative for Yersinia pestis. However, ticks were positive for several genera of potential zoonoses, including Anaplasma, Bacillus, Coxiella, Clostridia, Francisella, Rickettsia, Staphylococcus, Streptococcus and Yersinia. Faecal samples were also positive for genera of potentially zoonotic bacteria including those listed above plus Bacteroides, Bordetella, Campylobacter and Enterococcus.

Results from the two questionnaire surveys revealed the main reported illness in people were colds and flu. However, the local doctor also reported hepatitis as common. She also said that the local people contracted brucellosis whereas I did not identify this pathogen in their livestock. The herders thought their main loss of stock was from predation, with wolves identified as the main predator and snow leopards as the second. Other causes of stock loss perceived as important were adverse climatic conditions such as drought or severe winters while infectious disease was not a concern. Results from these surveys also highlighted gaps in health care for humans and livestock, especially around vaccination and parasite treatments.

In summary, I found that snow leopards and other wild and domestic animals within the study area tested positive for previous exposure to several important zoonotic pathogens. These pathogens were likely circulating among species via contamination of pasture and via predation and have potential to cause illness and reproductive loss. However, I detected no adverse effects on the health of the animals due to infection with these pathogens, and observed no related mortality or illness during my field trips. Hence the deaths of the four snow leopards that were the impetus for my study have not been explained, and monitoring and surveillance of this population should continue.

My findings on wildlife and domestic animal pathogens have relative importance to improving productivity of livestock and the health of the nomadic herders. I recommend improving the health of goats through vaccination and anti-parasite programmes, which will improve their fecundity and survival and thus increase herder income. These programmes will also have flow-on effects to improve the health of the native ungulates that share the grazing areas by decreasing the risk of pathogen transfer between them and also to the snow leopards that prey on them. Demonstrating the importance of herd health may also help mitigate herder wildlife conflict as increased productivity could decrease the perceived importance of predation on herd numbers.

Coxiella burnetii and Leptospires spp are a likely cause of illness in people, despite the lack of reported diagnoses. As rodents had a moderate prevalence of all pathogens tested and inhabit the gers of the local people, it is important to raise awareness of the risk of pathogen transfer to people via rodent excrement contaminating stored food and eating utensils. Risk of human exposure to pathogens during goat slaughter can also be reduced via improved hygiene practices.

By identifying pathogens with broad host ranges in a variety of species in this remote mountainous region, my study provides the basis for understanding health risks to wildlife, domestic animals and humans. Consideration of likely transmission routes for pathogens between species can inform current recommendations to improve health, productivity and hence conservation, of the endangered snow leopard – The Ghost of the Mountain.
Address
Corporate Author (up) Thesis Ph.D. thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number SLN @ rakhee @ Serial 1744
Permanent link to this record