Morphological divergence in a continental adaptive radiation: South American ovenbirds of the genus Cinclodes
ABSTRACT Cinclodes is an ecologically diverse genus of South American passerine birds and represents a case of continental adaptive radiation along multiple axes. We investigated morphological diversification in Cinclodes using a comprehensive set of morphometric measurements of study skins. Princip...
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Online Access: | http://hdl.handle.net/10088/25694 https://doi.org/10.1642/AUK-14-49.1 |
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ftsmithonian:oai:repository.si.edu:10088/25694 2023-05-15T13:48:45+02:00 Morphological divergence in a continental adaptive radiation: South American ovenbirds of the genus Cinclodes Rader, Jonathan A. Dillon, Michael E. Chesser, R. Terry Sabat, Pablo del Rio, Carlos Martínez 2015 http://hdl.handle.net/10088/25694 https://doi.org/10.1642/AUK-14-49.1 unknown The Auk Rader, Jonathan A., Dillon, Michael E., Chesser, R. Terry, Sabat, Pablo, and del Rio, Carlos Martínez. 2015. "Morphological divergence in a continental adaptive radiation: South American ovenbirds of the genus Cinclodes." The Auk . 132 (1):180–190. https://doi.org/10.1642/AUK-14-49.1 0004-8038 http://hdl.handle.net/10088/25694 133185 doi:10.1642/AUK-14-49.1 Journal Article 2015 ftsmithonian https://doi.org/10.1642/AUK-14-49.1 2020-09-09T18:34:42Z ABSTRACT Cinclodes is an ecologically diverse genus of South American passerine birds and represents a case of continental adaptive radiation along multiple axes. We investigated morphological diversification in Cinclodes using a comprehensive set of morphometric measurements of study skins. Principal component analysis identified 2 primary axes of morphological variation: one describing body size and a second capturing differences in wing-tip shape and toe length. Phylogenetic analyses of the first principal component suggest an early divergence of Cinclodes into 2 main clades characterized by large and small body sizes. We suggest that 2 morphological outliers within these main clades (C. antarcticus and C. palliatus) may be cases of island gigantism and that a third (C. patagonicus) may reflect ecological character displacement. Despite its ecological and physiological diversity, the genus Cinclodes does not appear to show morphological diversity beyond what is typical of other avian genera. , RESUMEN Cinclodes es un género ecológicamente diverso de aves paserinas de Sud América y presenta un caso de radiación adaptativa continental a lo largo de múltiples ejes. Investigamos la diversificación morfológica en Cinclodes usando un conjunto integral de medidas morfométricas de pieles de estudio. Un análisis de componentes principales identificó dos ejes principales de variación morfológica: el primero describe el tamaño corporal y el segundo captura las diferencias en la forma de la punta del ala y el largo del dedo del pie. Los análisis filogenéticos del primer componente principal sugieren una divergencia temprana de Cinclodes en dos clados principales caracterizados por tamaños del cuerpo grande y pequeño. Sugerimos que dos valores atípicos dentro de estos dos clados principales (C. antarcticus y C. palliatus) pueden ser casos de gigantismo en islas y un tercer caso (C. patagonicus) puede reflejar el desplazamiento de un carácter ecológico. A pesar de su diversidad ecológica y fisiológica, el género Cinclodes no parece mostrar diversidad morfológica más allá de lo típico de otros géneros de aves. Palabras clave: análisis filogenético, Furnariidae, morfología, radiación adaptativa, reconstrucción de un carácter ancestral NH-Vertebrate Zoology NMNH Peer-reviewed Article in Journal/Newspaper Antarc* antarcticus Unknown Allá ENVELOPE(17.421,17.421,66.587,66.587) Dedo ENVELOPE(-63.022,-63.022,-65.035,-65.035) The Auk 132 1 180 190 |
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Open Polar |
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Unknown |
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ftsmithonian |
language |
unknown |
description |
ABSTRACT Cinclodes is an ecologically diverse genus of South American passerine birds and represents a case of continental adaptive radiation along multiple axes. We investigated morphological diversification in Cinclodes using a comprehensive set of morphometric measurements of study skins. Principal component analysis identified 2 primary axes of morphological variation: one describing body size and a second capturing differences in wing-tip shape and toe length. Phylogenetic analyses of the first principal component suggest an early divergence of Cinclodes into 2 main clades characterized by large and small body sizes. We suggest that 2 morphological outliers within these main clades (C. antarcticus and C. palliatus) may be cases of island gigantism and that a third (C. patagonicus) may reflect ecological character displacement. Despite its ecological and physiological diversity, the genus Cinclodes does not appear to show morphological diversity beyond what is typical of other avian genera. , RESUMEN Cinclodes es un género ecológicamente diverso de aves paserinas de Sud América y presenta un caso de radiación adaptativa continental a lo largo de múltiples ejes. Investigamos la diversificación morfológica en Cinclodes usando un conjunto integral de medidas morfométricas de pieles de estudio. Un análisis de componentes principales identificó dos ejes principales de variación morfológica: el primero describe el tamaño corporal y el segundo captura las diferencias en la forma de la punta del ala y el largo del dedo del pie. Los análisis filogenéticos del primer componente principal sugieren una divergencia temprana de Cinclodes en dos clados principales caracterizados por tamaños del cuerpo grande y pequeño. Sugerimos que dos valores atípicos dentro de estos dos clados principales (C. antarcticus y C. palliatus) pueden ser casos de gigantismo en islas y un tercer caso (C. patagonicus) puede reflejar el desplazamiento de un carácter ecológico. A pesar de su diversidad ecológica y fisiológica, el género Cinclodes no parece mostrar diversidad morfológica más allá de lo típico de otros géneros de aves. Palabras clave: análisis filogenético, Furnariidae, morfología, radiación adaptativa, reconstrucción de un carácter ancestral NH-Vertebrate Zoology NMNH Peer-reviewed |
format |
Article in Journal/Newspaper |
author |
Rader, Jonathan A. Dillon, Michael E. Chesser, R. Terry Sabat, Pablo del Rio, Carlos Martínez |
spellingShingle |
Rader, Jonathan A. Dillon, Michael E. Chesser, R. Terry Sabat, Pablo del Rio, Carlos Martínez Morphological divergence in a continental adaptive radiation: South American ovenbirds of the genus Cinclodes |
author_facet |
Rader, Jonathan A. Dillon, Michael E. Chesser, R. Terry Sabat, Pablo del Rio, Carlos Martínez |
author_sort |
Rader, Jonathan A. |
title |
Morphological divergence in a continental adaptive radiation: South American ovenbirds of the genus Cinclodes |
title_short |
Morphological divergence in a continental adaptive radiation: South American ovenbirds of the genus Cinclodes |
title_full |
Morphological divergence in a continental adaptive radiation: South American ovenbirds of the genus Cinclodes |
title_fullStr |
Morphological divergence in a continental adaptive radiation: South American ovenbirds of the genus Cinclodes |
title_full_unstemmed |
Morphological divergence in a continental adaptive radiation: South American ovenbirds of the genus Cinclodes |
title_sort |
morphological divergence in a continental adaptive radiation: south american ovenbirds of the genus cinclodes |
publishDate |
2015 |
url |
http://hdl.handle.net/10088/25694 https://doi.org/10.1642/AUK-14-49.1 |
long_lat |
ENVELOPE(17.421,17.421,66.587,66.587) ENVELOPE(-63.022,-63.022,-65.035,-65.035) |
geographic |
Allá Dedo |
geographic_facet |
Allá Dedo |
genre |
Antarc* antarcticus |
genre_facet |
Antarc* antarcticus |
op_relation |
The Auk Rader, Jonathan A., Dillon, Michael E., Chesser, R. Terry, Sabat, Pablo, and del Rio, Carlos Martínez. 2015. "Morphological divergence in a continental adaptive radiation: South American ovenbirds of the genus Cinclodes." The Auk . 132 (1):180–190. https://doi.org/10.1642/AUK-14-49.1 0004-8038 http://hdl.handle.net/10088/25694 133185 doi:10.1642/AUK-14-49.1 |
op_doi |
https://doi.org/10.1642/AUK-14-49.1 |
container_title |
The Auk |
container_volume |
132 |
container_issue |
1 |
container_start_page |
180 |
op_container_end_page |
190 |
_version_ |
1766249667831529472 |