| Song divergence by sensory drive in amazonian birds. | |
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MedLine Citation:
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PMID: 20561048 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Visual signals are shaped by variation in the signaling environment through a process termed sensory drive, sometimes leading to speciation. However, the evidence for sensory drive in acoustic signals is restricted to comparisons between highly dissimilar habitats, or single-species studies in which it is difficult to rule out the influence of undetected ecological variables, pleiotropic effects, or chance. Here we assess whether this form of sensory drive-often termed "acoustic adaptation"-can generate signal divergence across ecological gradients. By studying avian communities in two Amazonian forest types, we show that songs of 17 "bamboo-specialist" bird species differ in predictable ways from their nearest relatives in adjacent terra firme forest. We also demonstrate that the direction of song divergence is correlated with the sound transmission properties of habitats, rather than with genetic divergence, ambient noise, or pleiotropic effects of mass and bill size. Our findings indicate that acoustic adaptation adds significantly to stochastic processes underlying song divergence, even when comparing between habitats with relatively similar structure. Furthermore, given that song differences potentially contribute to reproductive isolation, these findings are consistent with a wider role for sensory drive in the diversification of lineages with acoustic mating signals. |
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Authors:
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Joseph A Tobias; Job Aben; Robb T Brumfield; Elizabeth P Derryberry; Wouter Halfwerk; Hans Slabbekoorn; Nathalie Seddon |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. Date: 2010-08-19 |
Journal Detail:
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Title: Evolution; international journal of organic evolution Volume: 64 ISSN: 1558-5646 ISO Abbreviation: Evolution Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-11-02 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0373224 Medline TA: Evolution Country: United States |
Other Details:
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Languages: eng Pagination: 2820-39 Citation Subset: IM |
Copyright Information:
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© 2010 The Author(s). Journal compilation © 2010 The Society for the Study of Evolution. |
Affiliation:
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Edward Grey Institute, Department of Zoology, University of Oxford, United Kingdom. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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