PMID: 16526506Mar 11, 2006Paper

Impact of experimental design on Drosophila sexual isolation studies: direct effects and comparison to field hybridization data

Evolution; International Journal of Organic Evolution
Jerry A CoyneEmilio Rolan-Alvarez

Abstract

Many studies of speciation rely critically on estimates of sexual isolation obtained in the laboratory. Here we examine the sensitivity of sexual isolation to alterations in experimental design and mating environment in two sister species of Drosophila, D. santomea and D. yakuba. We use a newly devised measure of mating frequencies that is able to disentangle sexual isolation from species differences in mating propensity. Variation in fly density, presence or absence of a quasi-natural environment, degree of starvation, and relative frequency of species had little or no effect on sexual isolation, but one factor did have a significant effect: the possibility of choice. Designs that allowed flies to choose between conspecific and heterospecific mates showed significantly more sexual isolation than other designs that did not allow choice. These experiments suggest that sexual isolation between these species (whose ranges overlap on the island of São Tomé) is due largely to discrimination against D. yakuba males by D. santomea females. This suggestion was confirmed by direct observations of mating behavior. Drosophila santomea males also court D. yakuba females less ardently than conspecific females, whereas neither males nor fema...Continue Reading

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Citations

Jan 29, 2011·Proceedings. Biological Sciences·Genevieve M KozakJanette W Boughman
May 11, 2006·BMC Evolutionary Biology·Antonio Carvajal-Rodriguez, Emilio Rolan-Alvarez
Oct 13, 2006·PLoS Biology·John JaenikeMiranda S Minhas
Mar 31, 2010·PLoS Biology·Daniel R Matute
Nov 1, 2015·Insects·Béatrice DenisClaude Wicker-Thomas
Mar 28, 2008·Evolution; International Journal of Organic Evolution·Sandra Urbanelli, Daniele Porretta
May 21, 2008·Evolution; International Journal of Organic Evolution·Roman Yukilevich, John R True
Dec 18, 2008·Evolution; International Journal of Organic Evolution·Daniel R MatuteJerry A Coyne
May 10, 2008·Molecular Ecology·Malcolm D SchugWolfgang Stephan
Nov 10, 2009·Evolution; International Journal of Organic Evolution·Erik B DopmanAbby Seaman
Nov 7, 2009·Evolution; International Journal of Organic Evolution·Daniel R Matute, Jerry A Coyne
Sep 12, 2009·Evolution; International Journal of Organic Evolution·Jackson H Jennings, William J Etges
Oct 13, 2009·Evolution; International Journal of Organic Evolution·Lucia Kwan, Howard D Rundle
Mar 13, 2016·Journal of Evolutionary Biology·A DebelleR R Snook
Jun 19, 2015·Evolution; International Journal of Organic Evolution·Emilio Rolán-AlvarezAdriana D Briscoe
Nov 20, 2016·Journal of Evolutionary Biology·D BernerD Moser
Dec 29, 2018·Evolution; International Journal of Organic Evolution·Philip T LeftwichTracey Chapman
Oct 22, 2019·Journal of Evolutionary Biology·Ambre RibardièreThomas Broquet
Feb 6, 2020·Biological Reviews of the Cambridge Philosophical Society·Liam R Dougherty
May 10, 2017·Ecology and Evolution·Mónica Fernández-MeiramaEmilio Rolán-Alvarez

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