Consequences of mating with siblings and nonsiblings on the reproductive success in a leaf beetle
Consequences of mating with siblings and nonsiblings on the reproductive success in a leaf beetle
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与兄弟姐妹和非兄弟姐妹交配对叶甲虫繁殖成功的影响
DOI：
10.1002/ece3.2103
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发表时间：
2016
影响因子：
2.6
通讯作者：
Müller C
中科院分区：
文献类型：
--
作者：
Müller T;Müller C
选择一个合适的交配伙伴对个体的健康至关重要，与兄弟姐妹交配往往会导致近亲繁殖的衰退。我们研究了与兄弟姐妹与非兄弟姐妹的芥菜叶甲，Phaedon cochleariae（鞘翅目：叶甲科），一生的生殖性状的交配的后果。此外，我们分析了表皮碳氢化合物（CHC）配置文件是否是家庭特异性的，并可能影响年轻的成年人的交配行为。我们假设与兄弟姐妹交配的雌性生殖成功率降低，与非兄弟姐妹交配的雄性生殖成功率更高。同胞卵的孵化率比非同胞卵的孵化率低，表明近亲繁殖衰退。此外，在兄弟姐妹和非兄弟姐妹对中，雌性产卵的数量随着时间的推移而减少。有趣的是，家庭之间的CHC概况和体重不同。然而，甲虫并不回避兄弟姐妹，并且在无选择测试中接受他们作为非兄弟姐妹进行交配。总之，尽管与兄弟姐妹交配会产生负面影响，尽管兄弟姐妹可能通过其CHC谱被识别，但甲虫并没有表现出与兄弟姐妹的延迟交配。我们的研究结果表明，至少在本文所用的测试条件下，拟谷盗没有发展出一种避免近亲繁殖的前繁殖机制。我们预测，而不是一个多雄交配系统和/或postcopulatory机制可能已经演变在这个物种的近亲繁殖成本可以降低。
Choosing a suitable mating partner is crucial for the fitness of an individual, whereby mating with siblings often results in inbreeding depression. We studied consequences of mating with siblings versus nonsiblings in the mustard leaf beetle,Phaedon cochleariae(Coleoptera: Chrysomelidae), on lifetime reproductive traits. Furthermore, we analyzed whether cuticular hydrocarbon (CHC) profiles are family specific and could potentially influence the mating behavior of young adults. We hypothesized a reduced reproductive success of females mated with siblings and a more rapid mating of males with nonsiblings. The hatching rate from eggs of sibling pairs was lower compared to that of nonsibling pairs, pointing to inbreeding depression. Furthermore, the number of eggs laid by females decreased over time in both sibling and nonsibling pairs. Interestingly, the CHC profiles and the body mass differed between families. However, the beetles did not avoid siblings and accepted them as readily as nonsiblings for mating in no‐choice tests. In summary, although it had negative consequences to mate a sibling and although siblings could potentially be recognized by their CHC profiles, the beetles did not show a delayed mating with siblings. Our results indicate thatP. cochleariaebeetles have not developed a precopulatory mechanism to avoid inbreeding, at least under the test conditions applied here. We predict that instead a polyandrous mating system and/or postcopulatory mechanisms might have evolved in this species by which inbreeding costs can be reduced.
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DOI：
--
发表时间：
2010
期刊：
影响因子：
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作者：
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影响因子：
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