Reproductive Behaviour Evolves Rapidly When Intralocus Sexual Conflict Is Removed

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Reproductive Behaviour Evolves Rapidly When Intralocus Sexual Conflict Is Removed

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dc.contributor.author Bedhomme, St├ęphanie en_GB
dc.contributor.author Prasad, Nagaraj G. en_GB
dc.contributor.author Jiang, Pan-Pan en_GB
dc.contributor.author Chippindale, Adam K. en_GB
dc.contributor.author Tregenza, Tom en_GB
dc.date.accessioned 2008-09-28T19:35:47Z en_GB
dc.date.accessioned 2011-01-25T11:46:47Z en_US
dc.date.accessioned 2013-03-20T14:47:05Z
dc.date.issued 2008-05-14 en_GB
dc.description.abstract Background Intralocus sexual conflict can inhibit the evolution of each sex towards its own fitness optimum. In a previous study, we confirmed this prediction through the experimental removal of female selection pressures in Drosophila melanogaster, achieved by limiting the expression of all major chromosomes to males. Compared to the control populations (C1-4) where the genomes are exposed to selection in both sexes, the populations with male-limited genomes (ML1-4) showed rapid increases in male fitness, whereas the fitness of females expressing ML-evolved chromosomes decreased [1]. Methodology/Principal Findings Here we examine the behavioural phenotype underlying this sexual antagonism. We show that males expressing the ML genomes have a reduced courtship level but acquire the same number of matings. On the other hand, our data suggest that females expressing the ML genomes had reduced attractiveness, stimulating a lower rate of courtship from males. Moreover, females expressing ML genomes tend to display reduced yeast-feeding behaviour, which is probably linked to the reduction of their fecundity. Conclusion/Significance These results suggest that reproductive behaviour is shaped by opposing selection on males and females, and that loci influencing attractiveness and foraging were polymorphic for alleles with sexually antagonistic expression patterns prior to ML selection. Hence, intralocus sexual conflict appears to play a role in the evolution of a wide range of fitness-related traits and may be a powerful mechanism for the maintenance of genetic variation in fitness. en_GB
dc.identifier.citation PLoS ONE 2008 3(5) en_GB
dc.identifier.doi 10.1371/journal.pone.0002187 en_GB
dc.identifier.uri http://hdl.handle.net/10036/38236 en_GB
dc.publisher Public Library of Science en_GB
dc.rights Bedhomme et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. en_GB
dc.title Reproductive Behaviour Evolves Rapidly When Intralocus Sexual Conflict Is Removed en_GB
dc.date.available 2008-05-14 en_GB
dc.date.available 2008-09-28T19:35:47Z en_GB
dc.date.available 2011-01-25T11:46:47Z en_US
dc.date.available 2013-03-20T14:47:05Z
dc.identifier.issn 1932-6203 en_GB
dc.identifier.journal PLoS ONE en_GB
dc.identifier.pmcid 2367451 en_GB
dc.identifier.pmid 18478127 en_GB
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