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- W2000599521 abstract "Although many theoretical and empirical studies have addressed the dynamics of sexual selection, little is known about the evolution of multiple sexual-selection mechanisms within the same system. I performed a qualitative comparative study of sexual behaviours in seven sympatric species of piophilid flies to identify and compare the apparent mechanisms of sexual selection operating in each system. In each of the seven species I observed several distinct types of malemale and malefemale interactions, potentially representing multiple mechanisms of sexual selection. Malemale interactions included scramble competition and, in some species, bouts of intense combat. Malefemale interactions exhibited two distinct patterns: (1) some form of premounting courtship followed by a simple copulatory sequence or (2) no premounting courtship but palpation behaviours during the copulatory sequence. Either pattern was combined with malefemale struggle in some species. In two species, male mating success also appeared to depend on the ability to overcome a revealing obstacle, a female adaptation that exposed variation in male performance without direct assessment or struggle. In each species these mechanisms operated in a rough sequence and thus could be viewed as layers of sexual selection, with each layer potentially reducing the subset of individuals that have opportunities to compete in the next layer. A brief review of the literature suggests that layered sexual selection is the typical pattern in many animal groups and thus may have important evolutionary consequences." @default.
- W2000599521 created "2016-06-24" @default.
- W2000599521 creator A5073861127 @default.
- W2000599521 date "2003-03-01" @default.
- W2000599521 modified "2023-09-27" @default.
- W2000599521 title "Layered sexual selection: a comparative analysis of sexual behaviour within an assemblage of piophilid flies" @default.
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- W2000599521 doi "https://doi.org/10.1139/z03-031" @default.
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