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Kazensky, C.A.; Munson, L.; Seal, U.S. |
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Title |
The effects of melengestrol acetate on the ovaries of captive wild felids |
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Journal Article |
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1998 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Journal-of-Zoo-and-Wildlife-Medicine |
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29 |
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1 |
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1-5 |
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Mga; zoo; felids; contraception; Melengestrol-acetate; ovaries; snow-leopard; Panthera-uncia; snow leopard; browse; uncia; panthera; melengestrol; acetate; 1260; effects; study; ovarian; Ovary; captive; wild; wild felid; Wild-Felid; species; Follicle; Cats; cat; recent; Ovulation; doses; Dose; action; Progestin; Disease; veterinary |
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Melengestrol acetate (MGA) is the most widely used contraceptive in zoo felids, but the mechanism of contraception and the pathologic effects have not been investigated. For this study, the effects of MGA on folliculogenesis were assessed, and the association of MGA with ovarian lesions was evaluated. Comparisons were made among the histopathologic findings in the ovaries from 88 captive wild felids (representing 15 species) divided into three groups: 37 currently contracepted with MGA, eight previously exposed to MGA, and 43 never contracepted. Ninety-one percent of the felids evaluated had tertiary follicles, and no differences were noted between contracepted and uncontracepted cats. Some MGA-contracepted cats also had corpora lutea indicating recent ovulation. These results indicate that folliculogenesis is not suppressed by current doses of MGA and ovulation occurred in some cats. Therefore, the contraceptive actions of MGA do not occur by suppressing folliculogenesis, and MGA-contracepted felids likely have endogenous estrogens that may confound progestin effects on the uterus. Cystic rete ovarii was the most common pathologic finding, but they were not more prevalent in MGA-contracepted cats. These findings indicate that MGA is not associated with ovarian disease, including ovarian cancer, in contrast to the uterine lesions noted in MGA-treated cats. |
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Document Type: English. Affiliation: Taylor Veterinary Hospital, Turlock , California 95382, USA |
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SLN @ rana @ 348 |
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527 |
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Kinsel, M.J.; Kovarik, P.; Murnane, R.D. |
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Title |
Gastric spiral bacteria in small felids |
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Journal Article |
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1998 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Journal-of-Zoo-and-Wildlife-Medicine |
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29 |
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2 |
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214-220 |
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Gastric-spinal-bacteria; snow-leopard; medical; zoo; snow leopard; browse; gastric; spinal; bacteria; 1270 |
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Nine small cats, including one bobcat (Felis rufus), one Pallas cat (F. manul), one Canada lynx (F. lynx canadensis), two fishing cats (F. viverrina), two margays (F. wiedii), and two sand cats (F. margarita), necropsied between June 1995 and March 1997 had large numbers of gastric spiral bacteria, whereas five large cats, including one African lion (Panthera leo), two snow leopards (P. uncia), one Siberian tiger (P. tigris altaica), and one jaguar (P. onca), necropsied during the same period had none. All of the spiral organisms from the nine small cats were histologically and ultrastructurally similar. Histologically, the spiral bacteria were 5-14 mum long with five to nine coils per organism and were located both extracellularly within gastric glands and surface mucus, and intracellularly in parietal cells. Spiral bacteria in gastric mucosal scrapings from the Canada lynx, one fishing cat, and the two sand cats were gram negative and had corkscrew-like to tumbling motility when viewed with phase contrast microscopy. The bacteria were 0.5-0.7 mum wide, with a periodicity of 0.65-1.1 mum in all cats. Bipolar sheathed flagella were occasionally observed, and no periplasmic fibrils were seen. The bacteria were extracellular in parietal cell canaliculi and intracellular within parietal cells. Culture of mucosal scrapings from the Canada lynx and sand cats was unsuccessful. Based on morphology, motility, and cellular tropism, the bacteria were probably Helicobacter-like organisms. Although the two margays had moderate lymphoplasmacytic gastritis, the other cats lacked or had only mild gastric lymphoid infiltrates, suggesting that these organisms are either commensals or opportunistic pathogens. |
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Document Type: English |
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SLN @ rana @ 354 |
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534 |
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Oli, M.K.; Taylor, I.R.; Rogers, M.K. |
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Title |
Diet of the snow leopard (Panthera uncia) in the Annapurna Conservation Area, Nepal |
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Journal Article |
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1993 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Journal of Zoology London |
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231 |
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3 |
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365-370 |
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predation; scats; prey; Nepal; blue-sheep; marmot; yaks; pika; livestock; diet; blue; sheep; browse; 770 |
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The diet of the snow leopard (Panthera uncia) was studied from 213 scats collected between April 1990 and February 1991 in the Annapurna Conservation Area, Nepal. Seven species of wild and five species of domestic mammals were taken, as well as an unidentified mammal and birds. Blue sheep (Pseudois nayaur) were the most frequently eaten prey. Himalayan marmots (Marmota himalayana) were also important, except in winter when they were hibernating. During winter, snow leopards ate more Royle's pika (Ochotona roylei) and domestic livestock. Yaks were eaten more frequently than other livestock types. |
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Document Type: English
Call Number: QL1 .J879 |
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SLN @ rana @ 206 |
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744 |
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Oli, M.K. |
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A key for the identification of the hair of mammals of a snow leopard (Panthera uncia) habitat in Nepal |
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Journal Article |
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1993 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Journal of Zoology London |
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231 |
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1 |
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71-93 |
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Nepal; snow leopard; scats; Hair; diet; identification; Panthera-uncia; browse; panthera uncia; panthera; uncia; 780 |
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Analysis of prey remains in scats, particularly hairs, in widely used to study diet of mammalian predators, but identification of hair is often difficult because hair structures vary considerably both within and between species. Use of photographic reference of diagnostically important hair structures from mammals occurring in a predator's habitat has been found to be convenient for routine identification. A photographic reference key was developed for the identification of hairs of the mammals known to occur in a snow leopard (Panthera uncia) habitat in the Annapurna Conservation Area, Nepal. The key included a photographic reference of the diagnostic hair structures of nine species of wild and five species of domestic mammals. The cross-sectional appearance, shape and arrangement of medulla, the ratio of cortex to medulla, and the form and distribution of pigment in medulla and cortex were important diagnostic aids in the identification of hairs. |
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Document Type: English
Call Number: QL1 .J879 |
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SLN @ rana @ 207 |
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745 |
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Reading, R.P.; Mix, H.M.; Badamjaviin L.; Feh, L.; Kane, D.; Dulamtseren, S.; Enkhbold S. |
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Title |
Status and distribution of khulan Equus hemionus in Mongolia |
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Journal Article |
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2001 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Journal of Zoology |
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254 |
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381-389 |
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gobi; Equus hemionus; Khulan; Mongolia; wild ass; 5240 |
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The Asiatic wild ass Equus hemionus, or khulan, once ranged across much of Central Asia, but is now globally threatened. The largest free-ranging populations are now restricted to a 250-km wide area (range 100ñ400 km) across the Gobi Desert region of southern Mongolia. Over the last 23 years the population has moved further north and east into its former range. Surveys conducted in the 1970s and 1980s estimated that the Mongolian population contained fewer than 15 000 animals and was declining as a result of human exploitation and livestock competition. Aerial surveys (one in autumn 1994, two in spring 1997) were flown as line transects over portions of the khulan's range in Mongolia and ground surveys (’ve in spring, summer, and autumn 1994ñ97) were conducted by vehicle and foot. Sample sizes and areas surveyed were larger than previous surveys, and our methods were often more systematic. Population size was estimated at 33 000ñ63 000 wild asses in Mongolia. Animal density ranged from 4.2 a 1.3 to 19.1a 3.2 per 100 km2. Mean group size ranged from four to 35 animals in the south-western Gobi, four to seven animals in the southern Gobi, and three to 18 in the south-eastern Gobi. Our data suggest that Mongolia is the most important stronghold for the conservation of E. hemionus. Conservation management continues to be challenging because intensive studies on khulan biology and ecology are just beginning. As a freemarket economy continues to emerge in Mongolia, pressure from resource extraction interests and nomadic livestock herders to remove the khulan's protected status, permit harvesting and halt population growth and expansion, also makes implementation of research and conservation management programs more imperative. |
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Full text available at URL |
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SLN @ rana @ 509 |
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813 |
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Shrestha, R.; Wegge, P.; Koirala, R.A. |
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Summer diets of wild and domestic ungulates in Nepal Himalaya |
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2005 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Journal of Zoology |
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266 |
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111-119 |
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argali; blue sheep; Capra hircus; diet; faecal analysis; fecal analysis; mountain ungulates; Ovis ammon hodgsoni; pseudois nayaur |
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The selection of summer forage by three sympatric ungulates in the Damodar Kunda region of upper Mustang in
north Nepal was studied to assess the extent of food overlap between them. To compare their diets, a microhistological technique of faecal analysis was used, adjusted for inherent biases by comparing it with bite-count data obtained in domestic goats. Tibetan argali Ovis ammon hodgsoni, naur (blue sheep or bharal) Pseudois nayaur and domestic goat Capra hircus consumed mostly forbs, graminoids and browse, respectively. The proportions of food items in their diets were significantly different both at the plant species (P<0.02) and at the forage category level (P<0.001). Except for sharing three common plants (Agrostis sp., Stipa sp. and Potentilla fruticosa), dietary overlap at the species level was quite low. At the forage category level, naur and domestic goat overlapped more than the other ungulate pairs. Although all three species were opportunistic, mixed feeders, argali was a more selective forb specialist grazer than the other two ungulates. Owing to some spatial separation and little dietary overlap, interspecific competition for summer forage was low. If animal densities increase, however, goats are expected to compete more with naur than with argali because of their more similar diets. Owing to differences in forage selection by argali and naur throughout their large geographical ranges, reflecting adaptations to local ecological conditions, inferences regarding forage competition between domestic livestock and these two wild caprins need to be made from local, site-specific studies, rather than from general diet comparisons. |
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The Zoological Society of London |
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London |
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SLN @ rana @ 934 |
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888 |
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Lovari, S., Minder, I., Ferretti, F., Mucci, N., Randi, E., Pellizzi, B. |
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Common and snow leopards share prey, but not habitats: competition avoidance by large predators |
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2013 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Journal of Zoology |
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291 |
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127-135 |
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coexistence; resource partitioning; food habits; Panthera uncia; Panthera pardus. |
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Resource exploitation and behavioural interference underlie competition among
carnivores. Competition is reduced by specializing on different prey and/or spatiotemporal
separation, usually leading to different food habits. We predicted that
two closely related species of large cats, the endangered snow leopard and the
near-threatened common leopard, living in sympatry, would coexist through
habitat separation and exploitation of different prey species. In central Himalaya,
we assessed (2006–2010) habitat and diet overlap between these carnivores. The
snow leopard used grassland and shrubland, whereas the common leopard
selected forest. Contrary to our prediction, snow leopard and common leopard
preyed upon similar wild (Himalayan tahr, musk deer) and domestic species (Bos
spp., dogs). Dietary overlap between snow leopard and common leopard was 69%
(yearly), 76% (colder months) and 60% (warmer months). Thus, habitat separation
should be the result of other factors, most likely avoidance of interspecific
aggression. Habitat separation may not always lead to the use of different prey.
Avoidance of interspecific aggression, rather than exploitation of different
resources, could allow the coexistence of potentially competing large predators. |
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SLN @ rakhee @ |
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1402 |
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Mishra, C.; Bagchi, S. |
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Living with large carnivores: predation on livestock by the snow leopard (Uncia uncia) |
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2006 |
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Journal of Zoology |
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1-8 |
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large; carnivores; carnivore; predation; livestock; snow; snow leopard; snow-leopard; leopard; uncia |
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Livestock predation by large carnivores and their retaliatory persecution by pastoralists are worldwide conservation concerns. Poor understanding of the ecological and social underpinnings of this human-wildlife conflict hampers effective conflict management programs. The endangered snow leopard Uncia uncia is involved in conflict with people across its mountainous range in South and Central Asia, where pastoralism is the predominant land use, and is widely persecuted in retaliation. We examined human-snow leopard conflict at two sites in the Spiti region of the Indian Trans-Himalaya, where livestock outnumber wild ungulates, and the conflict is acute. We quantified the snow leopard's dependence on livestock by assessing its diet in two sites that differed in the relative abundance of livestock and wild ungulates. We also surveyed the indigenous Buddhist community's attitudes towards the snow leopard in these two sites. Our results show a relatively high dependence of snow leopards on livestock. A higher proportion of the snow leopard's diet (58%) was livestock in the area with higher livestock (29.7 animals km^2) and lower wild ungulate abundance (2.1-3.1 bharal Pseudois nayaurkm^2), compared with 40% of diet in the area with relatively lower livestock (13.9km^2) and higher wild ungulate abundance (4.5-7.8 ibex Capra ibexkm^2). We found that the community experiencing greater levels of livestock losses was comparatively more tolerant towards the snow leopard. This discrepancy is explained by the presence of a conservation-incentive program at the site, and by differences in economic roles of livestock between these two communities. The former is more dependent on cash crops as a source of income while the latter is more dependent on livestock, and thereby less tolerant of the snow leopard. These data have implications for conflict management strategies. They indicate that the relative densities of livestock and wild prey may be reasonable predictors of the extent of predation by the snow leopard. However, this by itself is not an adequate measure of the intensity of conflict even in apparently similar cultural settings. |
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SLN @ rana @ 862 |
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696 |
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Namgail, T.; Fox, J.; Bhatnagar, Y.V. |
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Habitat segregation between sympatric Tibetan argali Ovis ammon hodgsoni and blue sheep Pseudois nayaur in the Indian Trans-Himalaya |
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2004 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Journal of Zoology |
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262 |
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57-63 |
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argali; Ovis ammon hodgsoni; blue sheep; pseudois nayaur; Habitat selection; resource partitioning; niche relationship; 5200 |
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Tibetan argali Ovis ammon hodgsoni and blue sheep Pseudois nayaur have almost completely overlapping distributions encompassing most of the Tibetan plateau and its margins. Such a sympatric distribution of related species with similar ecological requirements implies that there is some degree of resource partitioning. This may be accomplished on the basis of habitat and/or diet separation. This study evaluated such ecological separation on the basis of physical habitat partitioning by these two sympatric ungulates in Hemis High Altitude National Park, Ladakh, India, in an area where the argali established a small new population in 1978. Such separation was tested for
on the basis of expected difference between the species in their proximity to cliffs, associated with species-specific anti-predator behaviour. Tibetan argali selected habitats away from cliffs while blue sheep selected habitats close to cliffs. Blue sheep also selected steep slopes whereas argali selected gentle slopes. The two species did not differ
in their use of habitats in terms of elevation. They did, however, differ in their use of plant communities; blue sheep selected sub-shrub and grass-dominated communities whilst argali selected forb-dominated communities. We suggest that the two species coexist in this site as a result of the differential use of habitat associated with their
species-specific anti-predator strategies. |
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Full text available at URL |
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SLN @ rana @ 505 |
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710 |
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Karesh, W.B.; Russell, R. |
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Ovarian dysgerminoma in a snow leopard (Panthera uncia) |
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1988 |
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Journal Of Zoo Animal Medicine |
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19 |
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4 |
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223-225 |
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medicine; ovarian; Dysgerminoma; veterinary; medical; zoos; zoo; browse; 1520 |
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Addresses:KARESH WB, WOODLAND PK ZOOLOG GARDENS,5500 PHINNEY AVE N,SEATTLE,WA 98103UNIV WASHINGTON,DIV ANIM MED,SEATTLE,WA 98195 Publisher:AMER ASSOC Z00 VETERINARIANS, MEDIA Document Type: English |
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SLN @ rana @ 115 |
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515 |
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