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Experimental confirmation that inbreeding depression increases extinction risk in butterfly populations



Experimental confirmation that inbreeding depression increases extinction risk in butterfly populations



American Naturalist 157(2): 237-244



The hypothesis that inbreeding depression increases the risk of extinction of small populations was tested experimentally. Experimental populations of the Glanville fritillary butterfly (Melitaea cinxia) were established in the field. Half of the populations were begun with offspring of full-sib matings and half were begun with offspring of outbred matings. A significant difference was found in the subsequent performance of the 2 populations. This result both supported earlier observational results on inbreeding-related extinction in M. cinxia and highlighted the potential significance of inbreeding depression in the dynamics of small and isolated local populations.

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Accession: 003441781

Download citation: RISBibTeXText

PMID: 18707275

DOI: 10.1086/318630


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