PHYLOGENETIC CONTRASTS AND THE EVOLUTION OF MAMMALIAN LIFE-HISTORIES

被引：23

作者：

BERRIGAN, D

CHARNOV, EL

PURVIS, A

HARVEY, PH

机构：

[1] Department of Biology, University of Utah, Salt Lake City, 84112, UT

[2] Department of Zoology, University of Oxford, Oxford, OX1 3PS, South Parks Road

来源：

EVOLUTIONARY ECOLOGY | 1993年 / 7卷 / 03期

关键词：

MAMMAL LIFE HISTORIES; COMPARATIVE METHOD; DIMENSIONLESS NUMBERS;

D O I：

10.1007/BF01237744

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

A recent synthetic model of mammalian life history evolution predicts that alphaM = 3(1-delta0.25), where alphaM is the product of age at maturity and the average adult instantaneous mortality rate, and delta is the ratio of weight at independence to average adult female weight. Previous studies have tested this prediction by fitting a non-linear regression to data collected for several species of mammals. However, this procedure suffers from non-independence of data points and may have led to incorrect estimates of regression parameters. We test the same life history prediction using phylogenetically independent contrasts with a phylogeny and data for 23 species of mammals. The results accord with the predicted relationship. Our study is one of the few examples where phylogenctic information has been used to improve the statistical power of a quantitative, model-based prediction of how life history variables should co-evolve.

引用

页码：270 / 278

页数：9

共 39 条

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