Effects of brood size manipulations on sexual attractiveness of offspring in the zebra finch

被引：111

作者：

DeKogel, CH

Prijs, HJ

机构：

[1] Zoological Laboratory, University of Groningen, 9750 AA Haren

来源：

ANIMAL BEHAVIOUR | 1996年 / 51卷

关键词：

D O I：

10.1006/anbe.1996.0073

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：

In a laboratory study the effect of brood size manipulations on the sexual attractiveness of offspring was investigated. Zebra finches, Taeniopygia guttata, were reared in small or large broods. Young were exchanged so that natural siblings from different rearing conditions could be compared. Birds of both sexes reared in small broods were larger and heavier as adults; furthermore, they developed the adult bill colour sooner than birds reared in large broods. Males reared in small broods had a redder beak as adults. Males but not females reared in small broods were more attractive to opposite sex individuals, as measured in choice tests. Males with redder beaks were more attractive to females. No relation was found in females between attractiveness and measured traits. Sexual attractiveness may thus be a potentially important mechanism by which brood size affects fitness. (C) 1996 The Association for the Study of Animal Behaviour.

引用

页码：699 / 708

页数：10

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