Genes Loaded Sperm Competition to Target Compatible Females Use Multiple Mating and Genetically
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A genome-wide analysis of courting and mating responses in Drosophila melanogaster females.
In Drosophila melanogaster, seminal fluid proteins influence several components of female physiology and behavior, including re-mating rates, ovulation and oviposition, and sperm use. It is well-known that female flies are not simply passive vessels and that female-mediated interactions with male products are important to female (and thus male) reproductive success. While the population genetic...
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Most discussions of ‘sperm competition’ have ignored the potential for competition among the different sperm genotypes present in the ejaculate of a single male. Rivalry within ejaculates may limit cooperation among the members of an ejaculate when they compete with sperm produced by other males. A gene that gains an advantage in competition within an ejaculate (a segregation distorter) may inc...
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Although mating is costly, multiple mating by females is a taxonomically widespread phenomenon. Theory has suggested that polyandry may allow females to gain genetic benefits for their offspring, and thus offset the costs associated with this mating strategy. For example, the good sperm hypothesis posits that females benefit from mating multiply when genetically superior males have increased su...
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In many species with internal fertilization, molecules transferred in the male ejaculate trigger and interact with physiological changes in females. It is controversial to what extent these interactions between the sexes act synergistically to mediate the female switch to a reproductive state or instead reflect sexual antagonism evolved as a by product of sexual selection on males. To address t...
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