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首页> 外文期刊>Belgian Journal of Zoology >Fitness-heterozygosity associations differ between male and female winter moths Operophtera brumata L.
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Fitness-heterozygosity associations differ between male and female winter moths Operophtera brumata L.

机译：雄性和雌性冬季蛾Operophtera brumata L.之间的健身-杂合性关联不同。

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摘要

The association between heterozygosity and fitness is positive but weak on average and varies between studies. Inbreeding has been invoked as the driving force between the positive heterozygosity-fitness associations, yet in spatio-temporally stable environments a negative correlation is expected. Furthermore, different patterns can arise because of the effects of natural selection on different loci and variation can be expected among groups of individuals that experience different levels of stress. In this paper we report on fitness-heterozygosity associations in the winter moth for six allozyme loci. The relationship is estimated for males and females separately, in four areas differing in their degree of fragmentation, and variation among loci is modelled. We introduce a linear mixed model framework to achieve this analysis. This approach differs from more traditional (multiple) regression analyses and allows testing specific interactions. We show that fitness, as estimated by body size, is negatively correlated with heterozygosity, but only so in females. This association does not vary significantly among loci and the four areas. We speculate that a trade-off between fitness-consequences of inbreeding and outbreeding at different stages of the winter moth life cycle could explain the observed patterns.
机译：杂合性与适应性之间的联系是积极的，但平均而言是弱的，并且在研究之间有所不同。近交是正杂合度-正性关联之间的驱动力，但是在时空稳定的环境中，负相关性是可预期的。此外，由于自然选择对不同基因座的影响，可能会出现不同的模式，并且可以预期承受不同压力水平的个体群体之间的差异。在本文中，我们报告了六个蛾类酶基因座在冬季蛾类中的健身-杂合性关联。分别在男性和女性的破碎程度不同的四个区域中估计了这种关系，并模拟了基因座之间的差异。我们引入线性混合模型框架来实现此分析。此方法不同于更传统的（多个）回归分析，并允许测试特定的交互。我们显示，按照体型估算，身体健康状况与杂合度呈负相关，而女性则是如此。该关联在基因座和四个区域之间没有显着差异。我们推测，在冬季蛾生命周期的不同阶段，近亲繁殖和近亲繁殖的适应性后果之间的折衷可以解释观察到的模式。

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