Utero-muscular Twisting and Sperm Storage in Viperids

Abstract

—Recent work on the reproduction of tropical viperids including Crotalus durissus and 13 species of Bothrops have suggested that females store sperm after mating and prior to ovulation/fertilization by “utero-muscular twisting” (UMT). Basically, the posterior region of the uterus becomes convoluted and contracted. Previous workers have indicated that this… (More)

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