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Fertility of Female Vipera aspis in Captivity as a Function of the Periods of Mating

G. Naulleau
Herpetologica
Vol. 27, No. 4 (Dec., 1971), pp. 385-389
Published by: Allen Press on behalf of the Herpetologists' League
Stable URL: http://www.jstor.org/stable/3891277
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Fertility of Female Vipera aspis in Captivity as a Function of the Periods of Mating
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Abstract

In captivity under almost constant artificial conditions, sexual behavior and mating occur throughout most of the year, but fertility is different. Matings in the first half-year are 100% fertile, whereas those from the second half-year are only 33.3% fertile.

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