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首页> 外文期刊>Ecological research >Natural genetic variation in fluctuating asymmetry of wing shape in Drosophila melanogaster
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Natural genetic variation in fluctuating asymmetry of wing shape in Drosophila melanogaster

机译：果蝇翼形波动不对称的自然遗传变异

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Fluctuating asymmetry (FA), defined as random deviation from perfect symmetry, has been used to assay the inability of individuals to buffer their developmental processes from environmental perturbations (i.e., developmental instability). In this study, we aimed to characterize the natural genetic variation in FA of wing shape in Drosophila melanogaster, collected from across the Japanese archipelago. We quantified wing shapes at whole wing and partial wing component levels and evaluated their mean and FA. We also estimated the heritability of the mean and FA of these traits. We found significant natural genetic variation in all the mean wing traits and in FA of one of the partial wing components. Heritability estimates for mean wing shapes were significant in two and four out of five wing traits in males and females, respectively. On the contrary, heritability estimates for FA were low and not significant. This is a novel study of natural genetic variation in FA of wing shape. Our findings suggest that partial wing components behave as distinct units of selection for FA, and local adaptation of the mechanisms to stabilize developmental processes occur in nature.
机译：波动不对称（FA）定义为偏离完美对称的随机偏差，已用于分析个体无法缓冲其发育过程免受环境扰动的影响（即发育不稳定性）。在这项研究中，我们旨在表征从日本群岛各地收集的果蝇果蝇翼形FA的自然遗传变异。我们量化了整个机翼和部分机翼组成部分的机翼形状，并评估了它们的均值和FA。我们还估计了这些特征的均值和FA的遗传力。我们在所有平均机翼性状和部分机翼组成部分之一的FA中发现了显着的自然遗传变异。在男性和女性的五个机翼特征中，平均机翼形状的遗传力估计分别显着于两个和四个。相反，FA的遗传力估计值较低，并不重要。这是对翼形FA自然遗传变异的新颖研究。我们的发现表明，机翼的部分机翼表现为FA的不同选择单位，并且自然发生了局部适应机制以稳定发育过程。

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