A selective advantage to immigrant genes in a Daphnia metapopulation
- Ebert, Dieter Zoologisches Institut, Universität Basel, Switzerland - Tvärminne Zoological Station, Hanko, Finland - Université de Fribourg, Département de Biologie, Unité d'Écologie et Évolution, Switzerland
- Haag, Christoph R. Zoologisches Institut, Universität Basel, Switzerland - Tvärminne Zoological Station, Hanko, Finland - Université de Fribourg, Département de Biologie, Unité d'Écologie et Évolution, Switzerland
- Kirkpatrick, Mark Section of Integrative Biology, University of Texas, Austin, USA
- Riek, Myriam Zoologisches Institut, Universität Basel, Switzerland - Tvärminne Zoological Station, Hanko, Finland
- Hottinger, Jürgen W. Zoologisches Institut, Universität Basel, Switzerland - Tvärminne Zoological Station, Hanko, Finland - Université de Fribourg, Département de Biologie, Unité d'Écologie et Évolution, Switzerland
- Pajunen, V. Ilmari Tvärminne Zoological Station, Hanko, Finland - Division of Population Biology, Department of Ecology and Systematics, University of Helsinki, Finland
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18.01.2002
Published in:
- Science. - 2002, vol. 295, no. 5554, p. 485-488
English
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.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Biologie
- Language
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- English
- Classification
- Biological sciences
- License
- License undefined
- Identifiers
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- RERO DOC 5996
- DOI 10.1126/science.1067485
- Persistent URL
- https://folia.unifr.ch/unifr/documents/300043
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