Spatial environmental complexity mediates sexual conflict and sexual selection in Drosophila melanogaster
نویسندگان
چکیده
منابع مشابه
Mechanisms underlying sexual selection and sexual conflict in Drosophila melanogaster
The revelation that females o f many taxa mate with multiple males has broadened perspectives in sexual selection to encompass the study o f conflicts of interest between males and females over mating and reproduction. Conflict often exists between the sexes over reproductive decisions such as how often to mate, because the optimum mating rate may often be higher for males than for females. Sel...
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Intralocus sexual conflict occurs when opposing selection pressures operate on loci expressed in both sexes, constraining the evolution of sexual dimorphism and displacing one or both sexes from their optimum. We eliminated intralocus conflict in Drosophila melanogaster by limiting transmission of all major chromosomes to males, thereby allowing them to win the intersexual tug-of-war. Here, we ...
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The strongest form of intralocus sexual conflict occurs when two conditions are met: (i) there is a positive intersexual genetic correlation for a trait and (ii) the selection gradients on the trait in the two sexes are in opposite directions. Intralocus sexual conflict can constrain the adaptive evolution of both sexes and thereby contribute to a species' 'gender load'. Previous studies of adu...
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Sexual dimorphism for lifespan (SDL) is widespread, but poorly understood. A leading hypothesis, which we test here, is that strong SDL can reduce sexual conflict by allowing each sex to maximize its sex-specific fitness. We used replicated experimental evolution lines of the fruit fly, Drosophila melanogaster, which had been maintained for over 360 generations on either unpredictable 'Random' ...
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The evolution of immune function depends not only on variation in genes contributing directly to the immune response, but also on genetic variation in other traits indirectly affecting immunocompetence. In particular, sexual selection is predicted to trade-off with immunocompetence because the extra investment of resources needed to increase sexual competitiveness reduces investment in immune f...
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ژورنال
عنوان ژورنال: Ecology and Evolution
سال: 2019
ISSN: 2045-7758
DOI: 10.1002/ece3.4932