The effects of reproduction on longevity and fertility in male Drosophila melanogaster

被引：83

作者：

Prowse, N ^{[1
]}

Partridge, L ^{[1
]}

机构：

[1] UNIV LONDON UNIV COLL, DEPT BIOL, LONDON NW1 2HE, ENGLAND

来源：

JOURNAL OF INSECT PHYSIOLOGY | 1997年 / 43卷 / 06期

基金：

英国自然环境研究理事会;

关键词：

Drosophila melanogaster; cost of reproduction; frailty; fertility; ageing;

D O I：

10.1016/S0022-1910(97)00014-0

中图分类号：

Q96 [昆虫学];

学科分类号：

摘要：

We examined the effect of reproduction on subsequent survival and fecundity of male Drosophila melanogaster by reversing the reproductive status of individuals part-way through life. Reproduction had a much more marked effect on fertility than survival: males,vith a history of reproduction showed complete sterility at a time when upwards of 80% of their cohort were still alive. Analyses of survival rates alone gave a misleading measure of the impact of ageing. Sterility appeared to be attributable mainly to a reduction in sperm count. Early reproduction caused permanent, irreversible damage to both survival and fecundity, with risk playing an apparently minor role. Individual differences in frailty appeared to be of little consequence for the interpretation of these reversal experiments, although its possible occurrence made definite detection of risk difficult. (C) 1997 Elsevier Science Ltd.

引用

页码：501 / 512

页数：12

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