Mating experience induces females to avoid harmful males in the beetle Lasioderma serricorne
Mating experience induces females to avoid harmful males in the beetle Lasioderma serricorne
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甲虫 Lasioderma serricorne 中的交配经验促使雌性避开有害的雄性
DOI：
10.1016/j.anbehav.2019.06.005
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发表时间：
2019
期刊：
影响因子：
2.5
通讯作者：
Masako Katsuki
中科院分区：
文献类型：
--
作者：
Kensuke Okada;Yu; Suzaki;Rikiya Sasaki;Masako Katsuki
当交配率发生性冲突时，雄性应该发展持久性以提高交配率，而雌性则会进化出抵抗力以保持较低的交配率。在甲虫Lasiserricorne中，雌性再交配是由于雄性的坚持，两性之间在交配率上存在冲突。然而，关于雌性对雄性持续存在的抵抗力的资料很少。我们发现，女性搬迁行为增加交配经验，但这种行为的变化没有观察到男性。女性也更有可能在男性在场的情况下搬迁。为了研究这种行为变化的目的是否是为了使女性避免男性，我们评估了女性健身组件如何改变两种治疗（容易和困难的避免）。当回避容易时，雌性再交配率较低，但交配率没有观察到差异。在简单的避免处理，我们发现没有差异的繁殖力或寿命之间的女性拒绝remating和那些只交配一次，而寿命减少接受remating。这些结果表明，拒绝再交配的雌性通过增加其迁移行为成功地避免了雄性造成的伤害。在困难回避处理，寿命缩短，无论是否接受或拒绝再交配。在这种情况下，由于它们避免再次交配的机会较少，雌性可能会更多地接触第二个雄性，从而遭受有害的持久性。我们的研究结果表明，在交配后的行为变化的结果是反适应男性的持久性，因为这防止了减少女性健身（女性寿命）和增加男性健身（交配成功）inL. serricorne。
When there is sexual conflict over mating rates, males should develop persistence to increase their mating rate, whereas females are expected to evolve resistance to keep mating at a lower rate. In the beetleLasioderma serricorne, female remating occurs as a result of male persistence, and there is conflict between the sexes over mating rates. However, there is little information on female resistance to the persistence of males. We found that female relocation behaviours were increased by mating experience, but this change in behaviour was not observed in males. Females were also more likely to relocate in the presence of males. To investigate whether the purpose of this change in behaviour is to enable females to avoid males, we assessed how female fitness components changed in relation to two treatments (easy and difficult avoidance). The female remating rate was lower when avoidance was easy, but no difference was observed in the mating rate. In the easy avoidance treatment, we found no difference in fecundity or longevity between females that rejected remating and those that mated only once, while life span was reduced by acceptance of remating. These results indicate that females that rejected remating successfully avoided the harm caused by males by increasing their relocation behaviour. In the difficult avoidance treatment, life span was reduced, irrespective of whether remating was accepted or rejected. In this situation, because they had less opportunity to avoid remating, females might have been more exposed to a second male and thus suffered from harmful persistence. Our results suggest that changes in behaviour after mating are a result of counteradaptation to male persistence because this prevents a decrease in female fitness (female life span) and an increase in male fitness (mating success) inL. serricorne.