Matched Filters, Mate Choice and the Evolution of Sexually Selected Traits

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Matched Filters, Mate Choice and the Evolution of Sexually Selected Traits

Show simple item record Kostarakos, Konstantinos en_GB Hartbauer, Manfred en_GB Römer, Heiner en_GB Tregenza, Tom en_GB
dc.contributor.department University of Exeter en_GB 2008-09-28T19:35:55Z en_GB 2011-01-25T11:47:08Z en_US 2013-03-20T14:49:23Z 2008-08-20 en_GB
dc.description.abstract Background Fundamental for understanding the evolution of communication systems is both the variation in a signal and how this affects the behavior of receivers, as well as variation in preference functions of receivers, and how this affects the variability of the signal. However, individual differences in female preference functions and their proximate causation have rarely been studied. Methodology/Principal Findings Calling songs of male field crickets represent secondary sexual characters and are subject to sexual selection by female choice. Following predictions from the “matched filter hypothesis” we studied the tuning of an identified interneuron in a field cricket, known for its function in phonotaxis, and correlated this with the preference of the same females in two-choice trials. Females vary in their neuronal frequency tuning, which strongly predicts the preference in a choice situation between two songs differing in carrier frequency. A second “matched filter” exists in directional hearing, where reliable cues for sound localization occur only in a narrow frequency range. There is a strong correlation between the directional tuning and the behavioural preference in no-choice tests. This second “matched filter” also varies widely in females, and surprisingly, differs on average by 400 Hz from the neuronal frequency tuning. Conclusions/Significance Our findings on the mismatch of the two “matched filters” would suggest that the difference in these two filters appears to be caused by their evolutionary history, and the different trade-offs which exist between sound emission, transmission and detection, as well as directional hearing under specific ecological settings. The mismatched filter situation may ultimately explain the maintenance of considerable variation in the carrier frequency of the male signal despite stabilizing selection. en_GB
dc.identifier.citation PLoS ONE 2008 3(8) en_GB
dc.identifier.doi 10.1371/journal.pone.0003005 en_GB
dc.identifier.uri en_GB
dc.publisher Public Library of Science en_GB
dc.rights Kostarakos 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 Matched Filters, Mate Choice and the Evolution of Sexually Selected Traits en_GB 2008-08-20 en_GB 2008-09-28T19:35:55Z en_GB 2011-01-25T11:47:08Z en_US 2013-03-20T14:49:23Z
dc.identifier.issn 1932-6203 en_GB
dc.identifier.journal PLoS ONE en_GB
dc.identifier.pmcid 2500168 en_GB
dc.identifier.pmid 18714350 en_GB

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