The quantitative genetic basis of polyandry in the parasitoid wasp, Nasonia vitripennis
The quantitative genetic basis of polyandry in the parasitoid wasp, Nasonia vitripennis
复制标题
寄生蜂 Nasonia vitripennis 一妻多夫的数量遗传基础
作者：
Dm Shuker;Aj Phillimore;Mn Burton;Se Hodge;S. West
了解雌性多次交配（一妻多夫制）的进化对于理解性选择和性冲突至关重要。尽管有这种兴趣，但人们对其遗传基础知之甚少，也不知道遗传是否影响多夫制的进化起源或维持。本研究探讨了拟寄生蜂（Nasonia vitripennis）一妻多夫制的数量遗传基础，该物种在实验室中观察到雌性再交配的进化。我们对最近收集的一群黄蜂进行了定量遗传实验。雌性多夫制（18 h后再交配频率）的遗传率较低，求偶期的遗传率较低，交尾期的遗传率略高。但这些性状的加性遗传方差系数均相当大（CVA>7.0）。我们还发现，在控制共同环境后，所有性状都有相当大的坝效应，这可能是显性效应或母性效应。我们的研究进一步证明，非加性遗传效应可能会影响玻璃雀交配行为的进化，以及更普遍的一妻多夫制的进化。
Understanding the evolution of female multiple mating (polyandry) is crucial for understanding sexual selection and sexual conflict. Despite this interest, little is known about its genetic basis or whether genetics influences the evolutionary origin or maintenance of polyandry. Here, we explore the quantitative genetic basis of polyandry in the parasitoid wasp Nasonia vitripennis, a species in which female re-mating has been observed to evolve in the laboratory. We performed a quantitative genetic experiment on a recently collected population of wasps. We found low heritabilities of female polyandry (re-mating frequency after 18 h), low heritability of courtship duration and a slightly higher heritability of copulation duration. However, the coefficients of additive genetic variance for these traits were all reasonably large (CVA>7.0). We also found considerable dam effects for all traits after controlling for common environment, suggesting either dominance or maternal effects. Our work adds to the evidence that nonadditive genetic effects may influence the evolution of mating behaviour in Nasonia vitripennis, and the evolution of polyandry more generally.
影响因子：
3.3
作者：
D. Houle
通讯作者：
D. Houle