Ecomorphological disparity in an adaptive radiation: opercular bone shape and stable isotopes in Antarctic icefishes
To assess how ecological and morphological disparity is interrelated in the adaptive radiation of Antarctic notothenioid fish we used patterns of opercle bone evolution as a model to quantify shape disparity, phylogenetic patterns of shape evolution, and ecological correlates in the form of stable i...
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John Wiley & Sons
2013
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Online Access: | http://edoc.unibas.ch/dok/A6223441 https://edoc.unibas.ch/31303/ https://doi.org/10.1002/ece3.708 |
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ftunivbasel:oai:edoc.unibas.ch:31303 2023-05-15T13:38:40+02:00 Ecomorphological disparity in an adaptive radiation: opercular bone shape and stable isotopes in Antarctic icefishes Wilson, Laura A. B. Colombo, Marco Hanel, Reinhold Salzburger, Walter Sánchez-Villagra, Marcelo R. 2013 http://edoc.unibas.ch/dok/A6223441 https://edoc.unibas.ch/31303/ https://doi.org/10.1002/ece3.708 unknown John Wiley & Sons Wilson, Laura A. B. and Colombo, Marco and Hanel, Reinhold and Salzburger, Walter and Sánchez-Villagra, Marcelo R. (2013) Ecomorphological disparity in an adaptive radiation: opercular bone shape and stable isotopes in Antarctic icefishes. Ecology and evolution, Vol. 3, H. 9. pp. 3166-3182. info:pmid/24102002 doi:10.1002/ece3.708 info:eu-repo/semantics/closedAccess Article PeerReviewed 2013 ftunivbasel https://doi.org/10.1002/ece3.708 2023-03-05T07:03:07Z To assess how ecological and morphological disparity is interrelated in the adaptive radiation of Antarctic notothenioid fish we used patterns of opercle bone evolution as a model to quantify shape disparity, phylogenetic patterns of shape evolution, and ecological correlates in the form of stable isotope values. Using a sample of 25 species including representatives from four major notothenioid clades, we show that opercle shape disparity is higher in the modern fauna than would be expected under the neutral evolution Brownian motion model. Phylogenetic comparative methods indicate that opercle shape data best fit a model of directional selection (Ornstein-Uhlenbeck) and are least supported by the "early burst" model of adaptive radiation. The main evolutionary axis of opercle shape change reflects movement from a broad and more symmetrically tapered opercle to one that narrows along the distal margin, but with only slight shape change on the proximal margin. We find a trend in opercle shape change along the benthic-pelagic axis, underlining the importance of this axis for diversification in the notothenioid radiation. A major impetus for the study of adaptive radiations is to uncover generalized patterns among different groups, and the evolutionary patterns in opercle shape among notothenioids are similar to those found among other adaptive radiations (three-spined sticklebacks) promoting the utility of this approach for assessing ecomorphological interactions on a broad scale. Article in Journal/Newspaper Antarc* Antarctic University of Basel: edoc Antarctic Ecology and Evolution 3 9 3166 3182 |
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University of Basel: edoc |
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ftunivbasel |
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description |
To assess how ecological and morphological disparity is interrelated in the adaptive radiation of Antarctic notothenioid fish we used patterns of opercle bone evolution as a model to quantify shape disparity, phylogenetic patterns of shape evolution, and ecological correlates in the form of stable isotope values. Using a sample of 25 species including representatives from four major notothenioid clades, we show that opercle shape disparity is higher in the modern fauna than would be expected under the neutral evolution Brownian motion model. Phylogenetic comparative methods indicate that opercle shape data best fit a model of directional selection (Ornstein-Uhlenbeck) and are least supported by the "early burst" model of adaptive radiation. The main evolutionary axis of opercle shape change reflects movement from a broad and more symmetrically tapered opercle to one that narrows along the distal margin, but with only slight shape change on the proximal margin. We find a trend in opercle shape change along the benthic-pelagic axis, underlining the importance of this axis for diversification in the notothenioid radiation. A major impetus for the study of adaptive radiations is to uncover generalized patterns among different groups, and the evolutionary patterns in opercle shape among notothenioids are similar to those found among other adaptive radiations (three-spined sticklebacks) promoting the utility of this approach for assessing ecomorphological interactions on a broad scale. |
format |
Article in Journal/Newspaper |
author |
Wilson, Laura A. B. Colombo, Marco Hanel, Reinhold Salzburger, Walter Sánchez-Villagra, Marcelo R. |
spellingShingle |
Wilson, Laura A. B. Colombo, Marco Hanel, Reinhold Salzburger, Walter Sánchez-Villagra, Marcelo R. Ecomorphological disparity in an adaptive radiation: opercular bone shape and stable isotopes in Antarctic icefishes |
author_facet |
Wilson, Laura A. B. Colombo, Marco Hanel, Reinhold Salzburger, Walter Sánchez-Villagra, Marcelo R. |
author_sort |
Wilson, Laura A. B. |
title |
Ecomorphological disparity in an adaptive radiation: opercular bone shape and stable isotopes in Antarctic icefishes |
title_short |
Ecomorphological disparity in an adaptive radiation: opercular bone shape and stable isotopes in Antarctic icefishes |
title_full |
Ecomorphological disparity in an adaptive radiation: opercular bone shape and stable isotopes in Antarctic icefishes |
title_fullStr |
Ecomorphological disparity in an adaptive radiation: opercular bone shape and stable isotopes in Antarctic icefishes |
title_full_unstemmed |
Ecomorphological disparity in an adaptive radiation: opercular bone shape and stable isotopes in Antarctic icefishes |
title_sort |
ecomorphological disparity in an adaptive radiation: opercular bone shape and stable isotopes in antarctic icefishes |
publisher |
John Wiley & Sons |
publishDate |
2013 |
url |
http://edoc.unibas.ch/dok/A6223441 https://edoc.unibas.ch/31303/ https://doi.org/10.1002/ece3.708 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Wilson, Laura A. B. and Colombo, Marco and Hanel, Reinhold and Salzburger, Walter and Sánchez-Villagra, Marcelo R. (2013) Ecomorphological disparity in an adaptive radiation: opercular bone shape and stable isotopes in Antarctic icefishes. Ecology and evolution, Vol. 3, H. 9. pp. 3166-3182. info:pmid/24102002 doi:10.1002/ece3.708 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1002/ece3.708 |
container_title |
Ecology and Evolution |
container_volume |
3 |
container_issue |
9 |
container_start_page |
3166 |
op_container_end_page |
3182 |
_version_ |
1766109417535700992 |