A test of the hypothesis of mate choice based on heterozygosity in the spotless starling

被引：49

作者：

Aparicio, JM ^{[1
]}

Cordero, PJ ^{[1
]}

Veiga, JP ^{[1
]}

机构：

[1] CSIC, Museo Nacl Ciencias Nat, E-28006 Madrid, Spain

来源：

ANIMAL BEHAVIOUR | 2001年 / 62卷

关键词：

D O I：

10.1006/anbe.2001.1840

中图分类号：

B84 [心理学]; C [社会科学总论]; Q98 [人类学];

学科分类号：

03 ; 0303 ; 030303 ; 04 ; 0402 ;

摘要：

The hypothesis of mate choice based on heterozygosity predicts that sexual traits will reach their extreme expression in males with the greatest average heterozygosity, and that both a male's ornament expression and his mating success will correlate positively with degree of individual heterozygosity. In agreement with the first prediction, we found a negative correlation between degree of homozygosity and length of the throat feathers (a secondary sexual trait) in male spotless starlings, Sturnus unicolor. However, we found a quadratic relationship between degree of homozygosity and both mating success and mean number of young sired per year. Hence, males of intermediate heterozygosity were more successful in mating and reproduction than either more homozygous or more heterozygous males. These results do not support the hypothesis of mate choice based on heterozygosity. (C) 2001 The Association for the Study of Animal Behaviour.

引用

页码：1001 / 1006

页数：6

共 38 条

[1]

Allendorf F.W., 1986, P57

[2]

[Anonymous], 1930, The general theory of natural selection

[3] PREFERENCES FOR COUSINS IN JAPANESE QUAIL [J].