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Linking Behavioral Ecology with Population Genetics



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Hereditas 142 1 6 2005 Linking behavioral ecology with population genetics insights from Drosophila nigrospiracula EDWARD PFEILER1 2 NANCY M NGO2 and THERESE A MARKOW3 1 Centro de Investigacio n en Alimentacio n y Desarrollo A C Unidad Guaymas Guaymas Sonora Mexico School of Life Sciences Arizona State University Tempe Arizona USA 3 Department of Ecology and Evolutionary Biology and the Center for Insect Science University of Arizona Tucson Arizona USA 2 Pfeiler E Ngo N M and Markow T A 2005 Linking behavioral ecology with population genetics insights from Drosophila nigrospiracula Hereditas 142 1 6 Lund Sweden ISSN 0018 0661 Received November 30 2004 Accepted December 13 2004 Although Drosophila species provide important model systems for evolutionary biology the ecologies and natural histories of most species are insufficiently characterized to permit predictions with respect to issues such as population genetic structure A notable exception is the group of cactophilic Drosophila endemic to the Sonoran Desert of North America One of these species D nigrospiracula exhibits no population subdivision anywhere in its range Here we present evidence suggesting that the timing of mating in relation to dispersal contributes to the panmixia observed in this species Therese A Markow Department of Ecology and Evolutionary Biology University of Arizona Tucson AZ 85721 USA E mail tmarkow arl arizona edu Species of the genus Drosophila exhibit a wide range of differences in the levels of population genetic differentiation observed using allozyme electrophoresis and molecular genetic studies POWELL 1997 SHOEMAKER and JAENIKE 1997 MARKOW et al 2002 HURTADO et al 2004 An absence of relevant behavioral and ecological studies of the majority of these species makes it difficult to interpret the factors responsible for the presence or absence of population structure Four species of cactophilic Drosophila endemic to the Sonoran Desert of North America however have been well



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