IS RESOURCE PARTITIONING AMONG OFFSPRING A RESPONSE TO BROOD SEX-RATIO IN AN AMPHIPOD WITH ENVIRONMENTAL SEX DETERMINATION

被引：9

作者：

MCCABE, J ^{[1
]}

DUNN, AM ^{[1
]}

机构：

[1] UNIV LONDON IMPERIAL COLL SCI & TECHNOL,NERC,CTR POPULAT BIOL,ASCOT SL5 7PY,BERKS,ENGLAND

来源：

OIKOS | 1994年 / 69卷 / 02期

关键词：

D O I：

10.2307/3546139

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

We investigated the hypothesis that female Gammarus duebeni allocate reproductive resources according to changes in size-related sex-specific fitness of young over the year. Throughout a complete breeding season we studied egg volume, clutch size and overall brood volume in females from a field population of Gammarus duebeni. We found no evidence that allocation of resources by females is an adaptive response to the brood sex ratio under environmental sex determination. Although no seasonal change in egg volume was identified, both clutch size and overall brood volume decreased over the breeding season.

引用

页码：203 / 206

页数：4

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