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Male condition influences female post mating aggression and feeding in Drosophila
Functional Ecology ( IF 4.6 ) Pub Date : 2021-03-24 , DOI: 10.1111/1365-2435.13791 Eleanor Bath 1 , Daisy Buzzoni 1, 2 , Toby Ralph 1 , Stuart Wigby 1, 3 , Irem Sepil 1
中文翻译：
雄性状况影响雌性果蝇的交配后攻击性和进食
更新日期：2021-03-24
Functional Ecology ( IF 4.6 ) Pub Date : 2021-03-24 , DOI: 10.1111/1365-2435.13791 Eleanor Bath 1 , Daisy Buzzoni 1, 2 , Toby Ralph 1 , Stuart Wigby 1, 3 , Irem Sepil 1
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- Mating changes female behaviour and physiology across a wide range of taxa, with important effects for male and female fitness. These changes are often induced by components of the male ejaculate, such as sperm and seminal fluid proteins.
- However, males can vary significantly in their ejaculates, due to factors such as age, mating history or nutritional status. This male variation may therefore lead to variation in the strength of responses males can stimulate in females, with alterations in fitness outcomes for both sexes.
- Using the fruit fly, Drosophila melanogaster, we tested whether three aspects of male condition shape an important, but understudied, post-mating response—increased female–female aggression.
- We found that females mated to old males fought less than females mated to young males. This effect was exacerbated in mates of old, sexually active males, but there was no effect of male starvation status on mating-induced female aggression. There was also a significant effect of age and mating history on female post-mating feeding duration.
- Our results add to a growing body of literature that variation in male condition can shape sexual selection through post-mating responses in females, including female–female interactions. Studying such variation may therefore be useful for understanding how the condition of one sex affects the behaviour of the other.
中文翻译：
雄性状况影响雌性果蝇的交配后攻击性和进食
- 交配会在广泛的分类群中改变雌性的行为和生理机能，对雄性和雌性的健康产生重要影响。这些变化通常是由男性射精的成分引起的，例如精子和精液蛋白。
- 然而，由于年龄、交配史或营养状况等因素，雄性的射精量可能会有很大差异。因此，这种雄性变异可能会导致雄性在雌性中刺激的反应强度发生变化，从而改变两性的健康结果。
- 我们使用果蝇 Drosophila melanogaster测试了雄性状况的三个方面是否形成了一种重要但尚未得到充分研究的交配后反应——雌性与雌性攻击性的增加。
- 我们发现与年老雄性交配的雌性比与年轻雄性交配的雌性争斗更少。这种影响在性活跃的老年雄性的配偶中加剧，但雄性饥饿状态对交配引起的雌性攻击没有影响。年龄和交配历史对雌性交配后进食持续时间也有显着影响。
- 我们的研究结果增加了越来越多的文献，即男性状况的变化可以通过女性的交配后反应（包括女性与女性的互动）来影响性选择。因此，研究这种变异可能有助于了解一种性别的状况如何影响另一种性别的行为。
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