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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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Year |
1998 |
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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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Author |
Saltz, D.; Rowen, M.; Rubenstein, D. |
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Title |
The effect of space-use patterns of reintroduced Asiatic wild ass on effective population size |
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Year |
2000 |
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Conservation Biology |
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14 |
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6 |
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1852-1861 |
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Israel; reintroduction; ungulates; conservation; population; territorial; 5260 |
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Full text available at URL |
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Call Number |
SLN @ rana @ 511 |
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840 |
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Author |
Oli, M.K. |
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Title |
The ecology and conservation of the snow leopard (Panthera uncia) in the Annapurna Conservation Area, Nepal |
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Book Whole |
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1991 |
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annapurna; conservation; area; Annapurna-Conservation-Area; ecology; Nepal; parks; park; reserves; reserve; refuge; potected-area; protected; browse; 2390 |
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Ph.D. thesis |
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University of Edinburgh, Scotland. |
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Phil. thesis |
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SLN @ rana @ 183 |
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742 |
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Jianzhang, M.; Hongfei, Z.; Cheng, K. |
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Title |
The Distribution Status of Snow Leopard (Panthera uncia) in China |
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2002 |
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snow; leopard; habitat; distribution; study; methods; conservation; uncia; China; 5120 |
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Islt |
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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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Call Number |
SLN @ rana @ 498 |
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494 |
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Author |
Blomqvist, L. |
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Title |
The Development of the Captive Snow Leopard Population between 1984-1985 |
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Conference Article |
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1988 |
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181-189 |
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Keywords |
zoos; zoo; captivity; breeding; status; population; husbandry; captive; browse; 1760 |
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In 1984, 73 (31/41/1) cubs were born of which 47 (24/23) survived for six months or longer. This gives us a cub mortality of 35.6%. A total of 38 (11/26/1) snow leopards died in captivity in 1984. Five (2/3) specimens were wild caught at the same time in the USSR and then located in the zoos of ALma-Ata, Moscow and Novosibirsk. At the End of 1984, the captive stock consisted of 332 (168/164) snow leopards, an increase of forty animals from the previous year. |
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International Snow Leopard Trust and Wildlife Institute of India |
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India |
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H.Freeman |
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Full text at URLTitle, Monographic: Fifth International Snow Leopard SymposiumPlace of Meeting: Srinagar, IndiaDate of Copyright: 1988 |
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Call Number |
SLN @ rana @ 106 |
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161 |
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Author |
Sitnikov, P. |
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Title |
The Death of a Snow Leopard |
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Conference Article |
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1988 |
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7-8 |
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siberia; Ussr; Irkutsk; behavior; interaction; human-interaction; 4150 |
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Helsinki, Finland |
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L.Blomqvist |
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Full text available at URLTitle, Monographic: International Pedigree Book of Snow LeopardsDate of Copyright: 1988 |
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Call Number |
SLN @ rana @ 401 |
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895 |
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Malik, M.M. |
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Title |
The Current Status of Snow Leopards and Their Prey Status and Conservation of Snow Leopard in Pakistan |
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Conference Article |
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1997 |
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11-20 |
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Pakistan; predator; prey; predation; livestock; research; monitoring; park; parks; refuge; Slims; conservation; poaching; hunting; furs; pelts; ecology; behavior; law; laws; education; herder; herders; status; protected-area; browse; protected areas; protected area; area; areas; protected; 2130 |
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International Snow Leopard Trust |
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Lahore, Pakistan |
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R.Jackson; A.Ashiq |
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Full Text at URLTitle, Monographic: Eighth International Snow Leopard SymposiumPlace of Meeting: Islamabad, PakistanDate of Copyright: 1997 |
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SLN @ rana @ 318 |
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641 |
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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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English |
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SLN @ rana @ 886 |
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53 |
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Author |
Sayer, J.A. |
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The conservation of the snow leopard (Uncia uncia) in Afghanistan |
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1980 |
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International Pedigree Book of Snow Leopards |
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2 |
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55-61 |
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Afghanistan; status; distribution; browse; 2490 |
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Outlines status and distribution as well as recent sightings of snow leopard in Afganastan |
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SLN @ rana @ 53 |
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849 |
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Author |
Kovshar A.F. |
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The conservation of gene pool of rare and endangered animal species in nature reserves of the Kazakh SSR |
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Miscellaneous |
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1984 |
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5-7 |
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Kazakhstan; endangered species; distribution; protected areas.; 7370; Russian |
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Five endangered predatory mammal species are protected in nature reserves of Kazakhstan. Of which snow leopard and stone marten can be met in all mountain nature reserves, while Tien Shan bear and Turkistan lynx in the Alma-Ata and Aksu-Djabagly nature reserves. |
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Full text available in RussianJournal Title: Study and protection of wildlife objects. |
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SLN @ rana @ 715 |
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582 |
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