Sexual selection and interacting phenotypes in experimental evolution: a study of Drosophila pseudoobscura mating behavior

Evolution; International Journal of Organic Evolution
Leonardo D BacigalupeRhonda R Snook

Abstract

Sexual selection requires social interactions, particularly between the sexes. When trait expression is influenced by social interactions, such traits are called interacting phenotypes and only recently have the evolutionary consequences of interacting phenotypes been considered. Here we investigated how variation in relative fitness, or the opportunity for sexual selection, affected the evolutionary trajectories of interacting phenotypes. We used experimentally evolved populations of the naturally promiscuous Drosophila pseudoobscura, in which the numbers of potential interactions between the sexes, and therefore relative fitness, were manipulated by altering natural levels of female promiscuity. We considered two different mating interactions between the sexes: mating speed and copulation duration. We investigated the evolutionary trajectories of means and (co)variances (P) and also the influence of genetic drift on the evolutionary response of these interactions. Our sexual selection treatments did not affect the means of either mating speed or copulation duration, but they did affect P. We found that the means of both traits differed among replicates within each selection treatment whereas the Ps did not. Changes as a conse...Continue Reading

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Citations

May 8, 2014·PLoS Biology·Malin Ah-KingMarie E Herberstein
Jun 5, 2013·Evolution; International Journal of Organic Evolution·Matthew D HallRobert C Brooks
May 29, 2009·Evolution; International Journal of Organic Evolution·Rhonda R SnookJon Slate
Feb 25, 2009·Evolution; International Journal of Organic Evolution·Helen S CrudgingtonRhonda R Snook
Sep 19, 2012·Journal of Evolutionary Biology·J HuntA J Moore
Mar 19, 2013·Journal of Evolutionary Biology·Rhonda R SnookLeigh W Simmons
Dec 31, 2009·Journal of Evolutionary Biology·H S CrudgingtonR R Snook
Jan 27, 2010·Evolution; International Journal of Organic Evolution·Rhonda R SnookAllen J Moore
May 6, 2015·Ecology and Evolution·Margarida BárbaroSara Magalhães
Jun 17, 2014·Evolution; International Journal of Organic Evolution·Allan DebelleRhonda R Snook
Mar 13, 2016·Journal of Evolutionary Biology·A DebelleR R Snook
Jun 18, 2016·BMC Evolutionary Biology·Jennifer C PerryStuart Wigby
Sep 7, 2016·Current Biology : CB·Karoline FritzscheGöran Arnqvist

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Methods Mentioned

BETA
PCR

Software Mentioned

GenAlEX Excel
CPCrand

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