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Stability Of Small Unisexual-Bisexual Populations Of Poeciliopsis (Pisces: Poeciliidae), William S. Moore
Stability Of Small Unisexual-Bisexual Populations Of Poeciliopsis (Pisces: Poeciliidae), William S. Moore
Biological Sciences Faculty Research Publications
All-female species of Poeciliopsis depend upon ♂ ♂ of closely related species for sperm. This relationship creates a competitive situation in which bisexual ♀ ♀ compete with unisexual ♀ ♀ for sperm from ♂ ♂ of the bisexual species. Earlier studies demonstrated a sufficient mechanism inherent in the behavior of ♂ ♂ for allowing coexistence in mixed unisexual-bisexual populations. Courtship preference of ♂ ♂ for conspecific ♀ ♀ is dynamically countered by social interaction among ♂ ♂ : subordinate males mate with unisexual ♀ ♀ in impetuous courtships. The Poeciliopsis monacha-Poeciliopsis 2 monacha-lucida complex occurs naturally in small isolated populations …