The effect of migration on local adaptation in a coevolving host-parasite system

被引:216
作者
Morgan, AD
Gandon, S
Buckling, A
机构
[1] Univ Oxford, Dept Zool, Oxford OX1 3PS, England
[2] CNRS, UMR 2724, IRD, F-34394 Montpellier, France
关键词
D O I
10.1038/nature03913
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
Antagonistic coevolution between hosts and parasites in spatially structured populations can result in local adaptation of parasites(1-5); that is, the greater infectivity of local parasites than foreign parasites on local hosts(1). Such parasite specialization on local hosts has implications for human health and agriculture. By contrast with classic single-species population-genetic models(6,7), theory indicates that parasite migration between subpopulations might increase parasite local adaptation, as long as migration does not completely homogenize populations(8-11). To test this hypothesis we developed a system-specific mathematical model and then coevolved replicate populations of the bacterium Pseudomonas fluorescens and a parasitic bacteriophage with parasite only, with host only or with no migration. Here we show that patterns of local adaptation have considerable temporal and spatial variation and that, in the absence of migration, parasites tend to be locally maladapted. However, in accord with our model, parasite migration results in parasite local adaptation, but host migration alone has no significant effect.
引用
收藏
页码:253 / 256
页数:4
相关论文
共 29 条
[1]  
Agrawal A, 2002, EVOL ECOL RES, V4, P79
[2]   Population mixing accelerates coevolution [J].
Brockhurst, MA ;
Morgan, AD ;
Rainey, PB ;
Buckling, A .
ECOLOGY LETTERS, 2003, 6 (11) :975-979
[3]   Antagonistic coevolution between a bacterium and a bacteriophage [J].
Buckling, A ;
Rainey, PB .
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 2002, 269 (1494) :931-936
[4]  
CRAWLEY MJ, GLIM ECOLOGISTS, P93
[5]   VIRULENCE AND LOCAL ADAPTATION OF A HORIZONTALLY TRANSMITTED PARASITE [J].
EBERT, D .
SCIENCE, 1994, 265 (5175) :1084-1086
[6]   Adaptation varies through space and time in a coevolving host-parasitoid interaction [J].
Forde, SE ;
Thompson, JN ;
Bohannan, BJM .
NATURE, 2004, 431 (7010) :841-844
[7]   Statistical properties of polymorphism in host-parasite genetics [J].
Frank, SA .
EVOLUTIONARY ECOLOGY, 1996, 10 (03) :307-317
[8]   Local adaptation and the geometry of host-parasite coevolution [J].
Gandon, S .
ECOLOGY LETTERS, 2002, 5 (02) :246-256
[9]   Local adaptation and gene-for-gene coevolution in a metapopulation model [J].
Gandon, S ;
Capowiez, Y ;
Dubois, Y ;
Michalakis, Y ;
Olivieri, I .
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 1996, 263 (1373) :1003-1009
[10]   Local adaptation, evolutionary potential and host-parasite coevolution: interactions between migration, mutation, population size and generation time [J].
Gandon, S ;
Michalakis, Y .
JOURNAL OF EVOLUTIONARY BIOLOGY, 2002, 15 (03) :451-462