Running with the Red Queen: Host-Parasite Coevolution Selects for Biparental Sex

被引：288

作者：

Morran, Levi T. ^{[1
]}

Schmidt, Olivia G. ^{[1
]}

Gelarden, Ian A. ^{[1
]}

Parrish, Raymond C., II ^{[1
]}

Lively, Curtis M. ^{[1
]}

机构：

[1] Indiana Univ, Dept Biol, Bloomington, IN 47405 USA

来源：

SCIENCE | 2011年 / 333卷 / 6039期

关键词：

INBREEDING DEPRESSION; SELF-FERTILIZATION; EVOLUTION; SNAIL; GENE;

D O I：

10.1126/science.1206360

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：

Most organisms reproduce through outcrossing, even though it comes with substantial costs. The Red Queen hypothesis proposes that selection from coevolving pathogens facilitates the persistence of outcrossing despite these costs. We used experimental coevolution to test the Red Queen hypothesis and found that coevolution with a bacterial pathogen (Serratia marcescens) resulted in significantly more outcrossing in mixed mating experimental populations of the nematode Caenorhabditis elegans. Furthermore, we found that coevolution with the pathogen rapidly drove obligately selfing populations to extinction, whereas outcrossing populations persisted through reciprocal coevolution. Thus, consistent with the Red Queen hypothesis, coevolving pathogens can select for biparental sex.

引用

页码：216 / 218

页数：3

共 29 条

[21] Mutation load and rapid adaptation favour outcrossing over self-fertilization [J].