Fly Selfish Genetic Elements Promote Polyandry in a
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منابع مشابه
Selfish genetic elements promote polyandry in a fly.
It is unknown why females mate with multiple males when mating is frequently costly and a single copulation often provides enough sperm to fertilize all a female's eggs. One possibility is that remating increases the fitness of offspring, because fertilization success is biased toward the sperm of high-fitness males. We show that female Drosophila pseudoobscura evolved increased remating rates ...
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Females of most animal species are polyandrous, with individual females usually mating with more than one male. However, the ubiquity of polyandry remains enigmatic because of the potentially high costs to females of multiple mating. Current theory to account for the high prevalence of polyandry largely focuses on its benefits to individual females. There are also higher-level explanations for ...
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Selfish genetic elements are ubiquitous and may impact drastically on eukaryote reproduction and evolution. A recent experimental evolution study shows that such elements could also provide an explanation for polyandry.
متن کاملThe dynamic relationship between polyandry and selfish genetic elements.
Selfish genetic elements (SGEs) are ubiquitous in eukaryotes and bacteria, and make up a large part of the genome. They frequently target sperm to increase their transmission success, but these manipulations are often associated with reduced male fertility. Low fertility of SGE-carrying males is suggested to promote polyandry as a female strategy to bias paternity against male carriers. Support...
متن کاملDoes polyandry control population sex ratio via regulation of a selfish gene?
The extent of female multiple mating (polyandry) can strongly impact on the intensity of sexual selection, sexual conflict, and the evolution of cooperation and sociality. More subtly, polyandry may protect populations against intragenomic conflicts that result from the invasion of deleterious selfish genetic elements (SGEs). SGEs commonly impair sperm production, and so are likely to be unsucc...
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تاریخ انتشار 2008