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Mountain chickadees from different elevations sing different songs: acoustic adaptation, temporal drift or signal of local adaptation?

Song in songbirds is widely thought to function in mate choice and male–male competition. Song is also phenotypically plastic and typically learned from local adults; therefore, it varies across geographical space and can serve as a cue for an individual's location of origin, with females commo...

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Detalles Bibliográficos
Autores principales: Branch, Carrie L., Pravosudov, Vladimir V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society Publishing 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4448878/
https://www.ncbi.nlm.nih.gov/pubmed/26064641
http://dx.doi.org/10.1098/rsos.150019
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author Branch, Carrie L.
Pravosudov, Vladimir V.
author_facet Branch, Carrie L.
Pravosudov, Vladimir V.
author_sort Branch, Carrie L.
collection PubMed
description Song in songbirds is widely thought to function in mate choice and male–male competition. Song is also phenotypically plastic and typically learned from local adults; therefore, it varies across geographical space and can serve as a cue for an individual's location of origin, with females commonly preferring males from their respective location. Geographical variation in song dialect may reflect acoustic adaptation to different environments and/or serve as a signal of local adaptation. In montane environments, environmental differences can occur over an elevation gradient, favouring local adaptations across small spatial scales. We tested whether food caching mountain chickadees, known to exhibit elevation-related differences in food caching intensity, spatial memory and the hippocampus, also sing different dialects despite continuous distribution and close proximity. Male songs were collected from high and low elevations at two different mountains (separated by 35 km) to test whether song differs between elevations and/or between adjacent populations at each mountain. Song structure varied significantly between high and low elevation adjacent populations from the same mountain and between populations from different mountains at the same elevations, despite a continuous distribution across each mountain slope. These results suggest that elevation-related differences in song structure in chickadees might serve as a signal for local adaptation.
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spelling pubmed-44488782015-06-10 Mountain chickadees from different elevations sing different songs: acoustic adaptation, temporal drift or signal of local adaptation? Branch, Carrie L. Pravosudov, Vladimir V. R Soc Open Sci Biology (Whole Organism) Song in songbirds is widely thought to function in mate choice and male–male competition. Song is also phenotypically plastic and typically learned from local adults; therefore, it varies across geographical space and can serve as a cue for an individual's location of origin, with females commonly preferring males from their respective location. Geographical variation in song dialect may reflect acoustic adaptation to different environments and/or serve as a signal of local adaptation. In montane environments, environmental differences can occur over an elevation gradient, favouring local adaptations across small spatial scales. We tested whether food caching mountain chickadees, known to exhibit elevation-related differences in food caching intensity, spatial memory and the hippocampus, also sing different dialects despite continuous distribution and close proximity. Male songs were collected from high and low elevations at two different mountains (separated by 35 km) to test whether song differs between elevations and/or between adjacent populations at each mountain. Song structure varied significantly between high and low elevation adjacent populations from the same mountain and between populations from different mountains at the same elevations, despite a continuous distribution across each mountain slope. These results suggest that elevation-related differences in song structure in chickadees might serve as a signal for local adaptation. The Royal Society Publishing 2015-04-29 /pmc/articles/PMC4448878/ /pubmed/26064641 http://dx.doi.org/10.1098/rsos.150019 Text en © 2015 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.
spellingShingle Biology (Whole Organism)
Branch, Carrie L.
Pravosudov, Vladimir V.
Mountain chickadees from different elevations sing different songs: acoustic adaptation, temporal drift or signal of local adaptation?
title Mountain chickadees from different elevations sing different songs: acoustic adaptation, temporal drift or signal of local adaptation?
title_full Mountain chickadees from different elevations sing different songs: acoustic adaptation, temporal drift or signal of local adaptation?
title_fullStr Mountain chickadees from different elevations sing different songs: acoustic adaptation, temporal drift or signal of local adaptation?
title_full_unstemmed Mountain chickadees from different elevations sing different songs: acoustic adaptation, temporal drift or signal of local adaptation?
title_short Mountain chickadees from different elevations sing different songs: acoustic adaptation, temporal drift or signal of local adaptation?
title_sort mountain chickadees from different elevations sing different songs: acoustic adaptation, temporal drift or signal of local adaptation?
topic Biology (Whole Organism)
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4448878/
https://www.ncbi.nlm.nih.gov/pubmed/26064641
http://dx.doi.org/10.1098/rsos.150019
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