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A selective advantage to immigrant genes in a Daphnia metapopulation

Ebert, D. and Haag, C. and Kirkpatrick, M. and Riek, M. and Hottinger, J. W. and Pajunen, V. I.. (2002) A selective advantage to immigrant genes in a Daphnia metapopulation. Science, 295. pp. 485-488.

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Official URL: http://edoc.unibas.ch/dok/A5250292

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Abstract

Immigrants to habitats occupied by conspecific organisms are usually expected to be competitively inferior, because residents may be locally adapted. If residents are inbred, however, mating between immigrants and residents results in offspring that may enjoy a fitness advantage from hybrid vigor. We demonstrate this effect experimentally in a natural Daphnia metapopulation in which genetic bottlenecks and local inbreeding are common. We estimate that in this metapopulation, hybrid vigor amplifies the rate of gene flow several times more than would be predicted from the nominal migration rate. This can affect the persistence of local populations and the entire metapopulation.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Zoologie > Evolutionary Biology (Ebert)
UniBasel Contributors:Ebert, Dieter
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Association for the Advancement of Science
ISSN:0036-8075
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:22 Mar 2012 14:30
Deposited On:22 Mar 2012 14:17

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