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Schmidt, A.M.; Hess, D.L.; Schmidt, M.J.; Smith, R.C.; Lewis, C.R. |
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Title |
Serum concentrations of oestradiol and progesterone, and sexual behaviour during the normal oestrous cycle in the leopard (Panthera pardus) |
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Miscellaneous |
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Year |
1988 |
Publication |
Journal of Reproductive Fertility |
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82 |
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43-49 |
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Keywords |
captive; Ovulation; Panthera pardus; Progesterone; Serum; sexual behaviour |
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Abstract |
Three mature nulliparous female leopards were studied for 5 years. During three separate 6-month periods serum oestradiol and progesterone concentrations were measured at weekly intervals. Oestradiol was elevated over 21 pg/ml for 54 weeks during these 3 periods, and 36 oestradiol peaks (65\m=.\8\m=+-\6\m=.\3pg/ml (mean \m=+-\s.e.m.), range 21\p=n-\172pg/ml) were identified. Daily frequency of feline reproductive behaviours averaged over each week increased from 1\m=.\9\m=+-\0\m=.\2(n = 93) during weeks with low serum oestradiol concentrations (<21 pg/ml) to 5\m=.\3\m=+-\0\m=.\6(n = 54) during weeks when serum oestradiol concentrations (>21 pg/ml) were high. Increased serum progesterone concentrations (13\p=n-\98n/gml) were observed on 5 occasions in 2 leopards housed together. These presumptive luteal phases lasted from 1 to 5 weeks. Baseline progesterone values were 1\m=.\6\m=+-\0\m=.\4 ng/m(nl= 131). No progesterone increments were observed in isolated animals, and serum concentrations remained at baseline levels. These limited observations suggest that female leopards do not require intromission to induce ovulation and luteal function. The average interval between oestradiol peaks for cycles with no progesterone increment was 3\m=.\4weeks (range 1\p=n-\6weeks). The interval for the 3 complete cycles associated with elevated progesterone concentrations was 7\m=.\3weeks. Analysis of sexual behaviours over the 5-year study period revealed no evidence of seasonality in these
captive leopards. |
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SLN @ rana @ 923 |
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873 |
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Author |
Braden, K. |
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Title |
Snow leopard conservation in the USSR |
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Magazine Article |
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Year |
1988 |
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Snow Line |
Abbreviated Journal |
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Fall |
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2-2 |
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conservation; snow leopard; Ussr |
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International Snow Leopard Trust |
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SLN @ rana @ 962 |
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191 |
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Stevens, A. |
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Title |
Rare snow leopard dies after flea bites |
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1988 |
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Los Angeles Times |
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snow; snow leopard; snow-leopard; leopard |
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part 2, page 3 |
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SLN @ rana @ 1094 |
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936 |
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Author |
Liao, Y.; Tan, B. |
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Title |
A Preliminary Study on the Geographical Distribution of Snow Leopards in China |
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Miscellaneous |
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1988 |
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51-63 |
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5480 |
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Proc. 5th Int. Snow Leopard Symp. |
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SLN @ rana @ 532 |
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616 |
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