SEX-LINKED HERITABILITY OF A SEXUALLY SELECTED CHARACTER IN A NATURAL-POPULATION OF POECILIA-RETICULATA (PISCES, POECILIIDAE) (GUPPIES)
SEX-LINKED HERITABILITY OF A SEXUALLY SELECTED CHARACTER IN A NATURAL-POPULATION OF POECILIA-RETICULATA (PISCES, POECILIIDAE) (GUPPIES)
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DOI：
10.1038/hdy.1992.120
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发表时间：
1992-09-01
期刊：
影响因子：
3.8
通讯作者：
HOUDE, AE
中科院分区：
文献类型：
--
作者：
HOUDE, AE
在雄性孔雀鱼（Poecilia reticulata）的颜色模式中，橙色色素点的相对程度先前已被证明是雌性选择的基础。通过亲子、半同胞育种试验和选择试验，研究了该性状在表观性选择下的遗传力。结果表明，橙子面积具有较强的遗传力。高的父-子回归斜率、强的选择反应和相对较小的母体方差分量表明该性状为Y连锁遗传。这一结果的数量性状是在协议与早期的工作表明Y连锁遗传的特定颜色图案元素的孔雀鱼。橙子面积的高遗传力表明，这种特性可能不是一些“好基因”模型为女性择偶进化所假设的适应性变化的指标，但它确实有进一步进化变化和阐述的潜力。
The relative extent of orange-pigmented spots in the colour patterns of male guppies, Poecilia reticulata, has previously been shown to be a basis for female choice. Parent-offspring and half-sib breeding experiments and selection experiments were conducted to determine if heritability of this character is maintained in the face of apparent sexual selection. The results demonstrate strong heritability of orange area. High father-son regression slopes, strong response to selection and a relatively small dam component of variance indicate that this character has Y-linked inheritance. This result for a quantitative character is in agreement with earlier work showing Y-linked inheritance of particular colour pattern elements in guppies. The high heritability of orange area suggests that this trait is probably not an indicator of fitness variation as postulated by some 'good genes' models for the evolution of female mate choice but that it does have the potential for further evolutionary change and elaboration.