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Evolutionary and Ec...
Evolutionary and Ecological Processes Underlying Geographic Variation in Innate Bird Songs
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- Maldonado-Coelho, Marcos (author)
- University of São Paulo,University of Missouri-St. Louis
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- dos Santos, Sidnei S. (author)
- Federal University of Bahia
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- Isler, Morton L. (author)
- Smithsonian Institution
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- Svensson-Coelho, Maria (author)
- Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Evolutionär ekologi,MEMEG,Molekylär ekologi och evolution,Forskargrupper vid Lunds universitet,Division aquatic ecology,Department of Biology,Faculty of Science,Evolutionary ecology,Molecular Ecology and Evolution Lab,Lund University Research Groups
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- Sotelo-Muñoz, Manuelita (author)
- University of São Paulo
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- Miyaki, Cristina Y. (author)
- University of São Paulo
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- Ricklefs, Robert E. (author)
- University of Missouri-St. Louis
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- Blake, John G. (author)
- University of Florida
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University of São Paulo University of Missouri-St Louis (creator_code:org_t)
- 2023-03-13
- 2023
- English.
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In: American Naturalist. - : University of Chicago Press. - 0003-0147 .- 1537-5323. ; 202:2, s. 31-52
- Related links:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Ecological and evolutionary processes underlying spatial variation in signals involved in mate recognition and reproductive isolation are crucial to understanding the causes of population divergence and speciation. Here, to test hypotheses concerning the causes of song divergence, we examine how songs of two sister species of Atlantic Forest suboscine birds with innate songs, the Pyriglena fire-eye antbirds, vary across their ranges. Specifically, we evaluated the influence of isolation by distance and introgres-sive hybridization, as well as morphological and environmental var-iation, on geographic variation in male songs. Analyses based on 496 male vocalizations from 63 locations across a 2,200-km latitudinal transect revealed clinal changes in the structure of songs and showed that introgressive hybridization increases both the variability and the homogenization of songs in the contact zone between the two species. We also found that isolation by distance, morphological constraints, the environment, and genetic introgression independently predicted song variation across geographic space. Our study shows the importance of an integrative approach that inves-tigates the roles of distinct ecological and evolutionary processes that influence acoustic signal evolution.
Subject headings
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- cline
- geographic variation
- hybridization
- song
- speciation
Publication and Content Type
- art (subject category)
- ref (subject category)
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