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Mate choice, sexual coercion and gene flow in guppy populations

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The role of behaviour in gene flow in Trinidadian guppies Poecilia reticulata was assessed using fish from an upstream and downstream pair of populations that differ in predation regime. High-predation (downstream) females preferred males from the corresponding low-predation population, but high-predation males achieved greater reproductive success under competition. This suggests that post-copulatory as well as pre-copulatory events are important in determining rates of gene flow.

Keywords: female choice; gene flow; guppy; male mating behaviour; sexual coercion; sperm competition

Document Type: Research Article


Affiliations: Gatty Marine Laboratory, University of St Andrews, St Andrews, KY16 8LB, Scotland, U.K.

Publication date: 2007-12-01

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