The evolution of repeated mating in the burying beetle, Nicrophorus Vespilloides
The evolution of repeated mating in the burying beetle, Nicrophorus Vespilloides
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DOI：
10.1111/j.1558-5646.2008.00422.x
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发表时间：
2008-08-01
期刊：
影响因子：
3.3
通讯作者：
Moore, Allen J.
中科院分区：
文献类型：
--
作者：
House, Clarissa M.;Evans, Gethin M. V.;Moore, Allen J.
许多物种的动物接受或请求与同一伴侣进行重复性交配;即，显示出重复交配对这种过度的进化解释要求重复交配的好处大于成本，并且重复交配的行为成分受到遗传的影响。当存在受精竞争或使额外配偶授精的机会很少或不可预测时，重复交配对雄性有好处。对雌性的好处不那么明显，根据潜在的遗传结构，重复交配可能是对雄性选择的相关反应。我们研究了重复交配的进化与同一个合作伙伴在埋葬甲虫Nicrophorus vespilloides估计的直接和间接的健身效益的女性和遗传的行为重复交配。女性交配的次数对女性的直接和间接健身效益最小。重复交配的行为成分（交配频率和交配速度）在雄性中呈中度负相关，在雌性中不相关。然而，交配频率和交配速度在雄性和雌性之间存在强烈的正遗传相关。我们的数据表明，重复交配的女性N。vespilloides可能已经演变为一个相关的反应，选择对男性的行为，而不是在回应的好处，重复交配的女性。
Animals of many species accept or solicit recurring copulations with the same partner; i.e., show repeated mating. An evolutionary explanation for this excess requires that the advantages of repeated mating outweigh the costs, and that behavioral components of repeated mating are genetically influenced. There can be benefits of repeated mating for males when there is competition for fertilizations or where the opportunities for inseminating additional mates are rare or unpredictable. The benefits to females are less obvious and, depending on underlying genetic architecture, repeated mating may have evolved as a correlated response to selection on males. We investigated the evolution of repeated mating with the same partner in the burying beetle Nicrophorus vespilloides by estimating the direct and indirect fitness benefits for females and the genetics of behavior underlying repeated mating. The number of times a female mated had minimal direct and no indirect fitness benefits for females. The behavioral components of repeated mating (mating frequency and mating speed) were moderately negatively genetically correlated in males and uncorrelated in females. However, mating frequency and mating speed were strongly positively genetically correlated between males and females. Our data suggest that repeated mating by female N. vespilloides may have evolved as a correlated response to selection on male behavior rather than in response to benefits of repeated mating for females.