Copulatory plugs in snakes: enforced chastity.
نویسنده
چکیده
The male of some snake species forms a copulatory plug which occludes the oviductal parts of the female's cloaca for a few days. The plug, apparently formed from secretions of the kidney immediately after insemination, probably prevents rival males from copulating with the same female.
منابع مشابه
Size dependence in non-sperm ejaculate production is reflected in daily energy expenditure and resting metabolic rate.
The non-sperm components of an ejaculate, such as copulatory plugs, can be essential to male reproductive success. But the costs of these ejaculate components are often considered trivial. In polyandrous species, males are predicted to increase energy allocation to the production of non-sperm components, but this allocation is often condition dependent and the energetic costs of their productio...
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ورودعنوان ژورنال:
- Science
دوره 187 4179 شماره
صفحات -
تاریخ انتشار 1975