Remating in Drosophila melanogaster : an examination of the trading-up and intrinsic male-quality hypotheses
Female Drosophila melanogaster remate more frequently than necessary to ensure fertilization. We tested whether polyandrous females gain genetic benefits for their offspring by (1) selecting secondary sires of higher genetic-quality than original partners or (2) because post-copulatory mechanisms bias fertilizations towards genetically superior males. We screened 119 hemiclones of males for lifetime fitness then selected eight hemiclones (four of extreme high fitness and four of extreme low...[Show more]
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|Source:||Journal of Evolutionary Biology|
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