Female-driven mechanisms,ejaculate size and quality contribute to the lower fertility of <Emphasis Type="Italic">sex-ratio</Emphasis> distorter males in <Emphasis Type="Italic">Drosophila simulans</Emphasis> |
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| Authors: | Caroline Angelard Catherine Montchamp-Moreau Dominique Joly |
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| Institution: | 1.Laboratoire Evolution, Génomes et Spéciation, CNRS – UPR 9034,Cedex,France;2.Université Paris-Sud 11,Cedex,France;3.Department of Ecology & Evolution, Biophore building,University of Lausanne,Lausanne,Switzerland |
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| Abstract: | Background
Sex-ratio meiotic drive refers to the preferential transmission of the X chromosome by XY males. The loss of Y-bearing sperm is caused
by an X-linked distorter and results in female-biased progeny. The fertility of sex-ratio (SR) males expressing the distorter is usually strongly reduced compared to wild-type males, especially when they are in
competition. The aim of this study was to identify the post-copulatory mechanisms that lower the fertility of SR males in
Drosophila simulans. Parameters contributing to male fertility were measured in single and double mating conditions. |
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