Copulatory plugs, restricted mating opportunities and reproductive competition among male garter snakes

Abstract

REPRODUCTIVE competition for females among males of a given species can take many forms, some of which (like mating plugs) may place constraints on the mating opportunities of males and intensify competition for available females. I have studied the reproductive behaviour of two garter snake species (Thamnophis sirtalis and T. butleri) in the field for 5… (More)
DOI: 10.1038/267345a0

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