Some problems with assessing Cope's Rule

被引：9

作者：

Solow, Andrew R. ^{[1
]}

Wang, Steve C. ^{[2
]}

机构：

[1] Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA

[2] Swarthmore Coll, Dept Math & Stat, Swarthmore, PA 19081 USA

来源：

EVOLUTION | 2008年 / 62卷 / 08期

关键词：

body size; evolutionary trend; Markov process; measurement scale;

D O I：

10.1111/j.1558-5646.2008.00410.x

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Cope's Rule states that the size of species tends to increase along an evolutionary lineage. A basic statistical framework is elucidated for testing Cope's Rule and some surprising complications are pointed out. If Cope's Rule is formulated in terms of mean size, then it is not invariant to the way in which size is measured. If Cope's Rule is formulated in terms of median size, then it is not invariant to the degree of separation between ancestral and descendant species. Some practical problems in assessing Cope's Rule are also described. These results have implications for the empirical assessment of Cope's Rule.

引用

页码：2092 / 2096

页数：5

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