Hemiclonal analysis reveals significant genetic, environmental and genotype × environment effects on sperm size in Drosophila melanogaster
Hemiclonal analysis reveals significant genetic, environmental and genotype × environment effects on sperm size in Drosophila melanogaster
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半克隆分析揭示了果蝇精子大小的显着遗传、环境和基因型×环境影响
DOI：
10.1111/j.1420-9101.2008.01585.x
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发表时间：
2008
影响因子：
2.1
通讯作者：
A. Meerupati
中科院分区：
文献类型：
--
作者：
Edward H. Morrow;A. Leijon;A. Meerupati
精子是所有动物细胞中最多样化的。单是大小的差异就很大，但仍然没有明确的进化解释可以解释这种多样性。精子形态的基本遗传学也知之甚少，尽管精子大小已知具有很强的遗传成分。在这里，使用半克隆分析的果蝇，我们证明，不仅有一个显着的加性遗传成分有助于精子长度的表型变异，但也有显着的环境效应。此外，精子大小的可塑性具有重要的遗传成分（基因型×环境相互作用）。 基因型×环境相互作用可能有助于维持该性状的大量遗传变异，从而解释了在许多分类群中观察到的精子大小的持续雄性间差异。 我们认为，精子长度的低条件依赖性和高遗传力，但低的可进化性（加性遗传变异系数）更符合历史的稳定选择，而不是性选择或强定向选择。
Spermatozoa are the most diverse of all animal cells. Variation in size alone is enormous and yet there are still no clear evolutionary explanations that can account for such diversity. The basic genetics of sperm form is also poorly understood, although sperm size is known to have a strong genetic component. Here, using hemiclonal analysis of Drosophila melanogaster, we demonstrate that there is not only a significant additive genetic component contributing to phenotypic variation in sperm length but also a significant environmental effect. Furthermore, the plasticity of sperm size has a significant genetic component to it (a genotype × environment interaction). A genotype × environment interaction could contribute to the maintenance of the substantial genetic variation in this trait and thereby explain the persistent inter‐male differences in sperm size seen in numerous taxa. We suggest that the low conditional dependence and high heritability but low evolvability (the coefficient of additive genetic variation) of sperm length is more consistent with a history of stabilizing selection rather than either sexual selection or strong directional selection.
影响因子：
3.3
作者：
D. Houle
通讯作者：
D. Houle
果蝇自然群体内部和之间两个形态特征的遗传力。
影响因子：
3.3
作者：
Coyne,JA;Beecham,E
通讯作者：
Beecham,E