A trade-off between reproduction and a condition-dependent sexually selected ornament in the house sparrow Passer domesticus

被引：85

作者：

Griffith, SC ^{[1
]}

机构：

[1] Uppsala Univ, Evolut Biol Ctr, Dept Evolut Biol, S-75236 Uppsala, Sweden

来源：

PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES | 2000年 / 267卷 / 1448期

关键词：

life history; trade-offs; ornament expression sexual selection; condition dependence;

D O I：

10.1098/rspb.2000.1116

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Reproductive effort was manipulated in a free-living population of house sparrows (Passer domesticus) to investigate the trade-off between reproductive investment and the expression of a condition-dependent sexually selected ornament. Phenotypic plasticity in the expression of this trait was related to the experimentally manipulated size of the brood reared by a male. Males that invested more in current reproduction subsequently became more attractive to females in this population as they showed a preference for males with smaller badges. This supports the argument that direct benefits are a primary focus for mate choice by females. Trade-offs between reproductive effort and the expression of sexual ornaments are a potentially important source of phenotypic variation in both sexual ornaments and life-history traits.

引用

页码：1115 / 1119

页数：5

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