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Conspicuous polymorphism in sexually selected traits is usually attributed to processes such as frequency‐dependent selection that can maintain genetic variation. Recent evidence indicates that dramatic variation of male coloration in guppies (Poecilia reticulata) is promoted by a form of frequency‐dependent selection in which males bearing rare or novel color patterns achieve higher mating success...
Sexual selection is the outcome of behavioural interactions within and between the sexes. Numerous studies show how individuals modify their sexual behaviour in response to ecological or social conditions, and such changes may therefore affect the evolutionary outcome of sexual selection. Our study examined the effect of habitat structure on the sexual behaviour of male and female guppies, Poecilia...
Female mating preferences and the male colour pattern characteristics upon which preferences are based vary both within and between guppy,Poecilia reticulatapopulations from Trinidad. A general trend is for the degree of preference for orange coloration to match the degree of expression of orange coloration in each population, resulting in a positive correlation between the means of the two traits...
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