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THE HERITABILITY OF SEXUALLY DIMORPHIC TRAITS IN THE YELLOW DUNG FLY SCATHOPHAGA-STERCORARIA (L)
被引：53
作者：
SIMMONS, LW
WARD, PI
机构：
[1] Department of Environmental and Evolutionary Biology, University of Liverpool, Liverpool, L69 3BX
关键词：
SCATHOPHAGA-STERCORARIA;
BODY SIZE;
DEVELOPMENT TIME;
HERITABILITY;
SEXUAL DIMORPHISM;
SEXUAL SELECTION;
D O I：
10.1046/j.1420-9101.1991.4040593.x
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ;
0713 ;
摘要：
A precise method was used for estimating the proportion of heritable variation in two life history parameters of the yellow dung fly, whereby environmental components of variance were minimized. Significant heritable variation for body size was revealed for father to son and mother to daughter relationships. Variation in development time was not significantly heritable. There is a marked sexual dimorphism in body size in this species which is discussed in the light of the observed sex-genotype interaction in heritabilities and low genetic correlation for size between the sexes. It is suggested that opposing pressures of sexual and natural selection and/or genetic pleotropy may be responsible for the maintenance of heritable variation, and the evolution of sexual dimorphism in these two traits.
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页码：593 / 601
页数：9
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