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Male‐biased operational sex ratios can increase male‐male competition and can potentially select for both increased pre‐ and postcopulatory male success. In the present study, using populations of Drosophila melanogaster evolved under male‐biased (M) or female‐biased (F) sex ratios, we asked whether (a) male mating success can evolve, (b) males are better at mating females that they have coevolved...
Exposure to low temperatures reduces gamete viability and fecundity in females of insect species like Drosophila. Hence, adaptation to cold stress can in principle involve modifications in reproductive traits in females. Studies on resistance to cold stress have mostly addressed the evolution of adult survivorship post cold shock. Very few studies have addressed the evolution of reproductive traits...
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