ANALYTIC AND SIMULATION-MODELS PREDICTING POSITIVE GENETIC CORRELATIONS BETWEEN TRAITS LINKED BY TRADE-OFFS

被引：61

作者：

DELAGUERIE, P ^{[1
]}

OLIVIERI, I ^{[1
]}

ATLAN, A ^{[1
]}

GOUYON, PH ^{[1
]}

机构：

[1] INRA,CTR MONTPELLIER,GENET & AMELIORAT PLANTES STN,DOMAINE MELGUEIL,F-34130 MAUGUIO,FRANCE

来源：

EVOLUTIONARY ECOLOGY | 1991年 / 5卷 / 04期

关键词：

RESOURCE ALLOCATION; LIFE HISTORIES; FITNESS COMPONENTS; COVARIANCES;

D O I：

10.1007/BF02214153

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Using a two-loci multiplicative model of resource allocation, we show how the existence of several levels of resource allocation may affect the sign of the genetic correlations between traits linked by trade-offs. Positive genetic correlations between components of fitness affected by genetic trade-offs may result from different amounts of genetic variability at the pleiotropic loci determining the allocation of resources. Thus positive genetic correlations may be obtained in the absence both of environmental variation and of differences between individuals in resource acquisition. Nevertheless, positive correlations between all components of fitness at the same time cannot be obtained without variability in the acquisition of resources.

引用

页码：361 / 369

页数：9

共 26 条

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