Life-history flexibility as a strategy for survival in a variable environment

被引：17

作者：

Baird, D. J. ^{[1
]}

Linton, L. R. ^{[1
]}

Davies, R. W. ^{[1
]}

机构：

[1] Univ Calgary, Dept Biol, Calgary, AB T2N 1N4, Canada

来源：

FUNCTIONAL ECOLOGY | 1987年 / 1卷 / 01期

关键词：

life history; phenotypic plasticity; energy budget; reproductive costs; bet hedging;

D O I：

10.2307/2389356

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

At 15 degrees C, Nephelopsis obscura Verrill behaved as predicted for an iteroparous species, decreasing the rate of energy allocation to reproduction as ration declined. At 20 degrees C, under high ration, N. obscura deviated from predictions for both iteroparous and semelparous species by reducing the rate of energy allocation to reproduction at high rations. This temperature-related shift of energy allocation to reproduction is explained in terms of the relative mortality risks associated with breeding at 15 degrees C and 20 degrees C, and shows that N. obscura has a flexible life-history strategy, which is an adaptive response to breeding in a variable environment.

引用

页码：45 / 48

页数：4

共 15 条

[1] LIFE-HISTORY EVOLUTION AND POSTREPRODUCTIVE MORTALITY RISK [J].