Cichlid fish diversity threatened by eutrophication that curbs sexual selection

被引：907

作者：

Seehausen, O

vanAlphen, JJM

Witte, F

机构：

[1] Inst. of Evol. and Ecol. Sciences, University of Leiden, Post Office Box 9516

来源：

SCIENCE | 1997年 / 277卷 / 5333期

关键词：

D O I：

10.1126/science.277.5333.1808

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Cichlid fish species of Lake Victoria can interbreed without loss of fertility but are sexually isolated by mate choice. Mate choice is determined on the basis of coloration, and strong assortative mating can quickly lead to sexual isolation of color morphs. Dull fish coloration, few color morphs, and low species diversity are found in areas that have become turbid as a result of recent eutrophication, By constraining color vision, turbidity interferes with mate choice, relaxes sexual selection, and blocks the mechanism of reproductive isolation, In this way, human activities that increase turbidity destroy both the mechanism of diversification and that which maintains diversity.

引用

页码：1808 / 1811

页数：4

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