A selective advantage to immigrant genes in a Daphnia metapopulation
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
ID 69874
Author(s) Ebert, Dieter; Haag, Christoph; Kirkpatrick, Mark; Riek, Myriam; Hottinger, Jurgen W; Pajunen, V Ilmari
Author(s) at UniBasel Ebert, Dieter
Year 2002
Title A selective advantage to immigrant genes in a Daphnia metapopulation
Journal Science
Volume 295
Number 5554
Pages / Article-Number 485-8
Keywords Inbreeding depression; subdivided populations; deleterious; mutations; cyclical parthenogen; rock pools; extinction; load; consequences; environment; diversity
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.
Publisher American Association for the Advancement of Science
ISSN/ISBN 0036-8075
edoc-URL http://edoc.unibas.ch/dok/A5250292
Full Text on edoc No
Digital Object Identifier DOI 10.1126/science.1067485
PubMed ID http://www.ncbi.nlm.nih.gov/pubmed/11799241
ISI-Number WOS:000173350700047
Document type (ISI) Journal Article

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