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No evidence of mitochondrial genetic variation for sperm competition within a population of Drosophila melanogaster
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution.
2008 (English)In: Journal of Evolutionary Biology, ISSN 1010-061X, E-ISSN 1420-9101, Vol. 21, no 6, 1798-1807 p.Article in journal (Refereed) Published
Abstract [en]

Cytoplasmic, Drosophila melanogaster, genetic variation, mtDNA, offence/k Recent studies have advocated a role for mitochondrial DNA (mtDNA) in sperm competition. This is controversial because earlier theory and empirical work suggested that mitochondrial genetic variation for fitness is low. Yet, such studies dealt only with females and did not consider that variation that is neutral when expressed in females, might be non-neutral in males as, in most species, mtDNA is never selected in males. We measured male ability to compete for fertilizations, at young and late ages, across 25 cytoplasms expressed in three different nuclear genetic backgrounds, within a population of Drosophila melanogaster. We found no cytoplasmic (thus no mtDNA) genetic variation for either male offence or offensive sperm competitiveness. This contrasts with previous findings demonstrating cytoplasmic genetic variation for female fitness and female ageing across these same lines. Taken together, this suggests that mitochondrial genes do not contribute to variation in sperm competition at the within-population level.

Place, publisher, year, edition, pages
2008. Vol. 21, no 6, 1798-1807 p.
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-107112DOI: 10.1111/j.1420-9101.2008.01581.xISI: 000260108900033OAI: oai:DiVA.org:uu-107112DiVA: diva2:227691
Available from: 2009-07-16 Created: 2009-07-16 Last updated: 2017-12-13Bibliographically approved

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