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Population size does not influence mitochondrial genetic diversity in animals

Abstract : Within-species genetic diversity is thought to reflect population size, history, ecology, and ability to adapt. Using a comprehensive collection of polymorphism data sets covering 3000 animal species, we show that the widely used mitochondria) DNA (mtDNA) marker does not reflect species abundance or ecology: mtDNA diversity is not higher in invertebrates than in vertebrates, in marine than in terrestrial species, or in small than in large organisms. Nuclear loci, in contrast, fit these intuitive expectations. The unexpected mitochondria( diversity distribution is explained by recurrent adaptive evolution, challenging the neutral theory of molecular evolution and questioning the relevance of mtDNA in biodiversity and conservation studies.
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Contributor : Christine Bibal Connect in order to contact the contributor
Submitted on : Tuesday, November 18, 2008 - 11:00:09 AM
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E. Bazin, Sylvain Glémin, Nicolas Galtier. Population size does not influence mitochondrial genetic diversity in animals. Science, American Association for the Advancement of Science (AAAS), 2006, 312 (5773), pp.570-572. ⟨10.1126/science.1122033⟩. ⟨halsde-00339540⟩



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