Testing the predictability of morphological evolution in contrasting thermal environments
Gaining the ability to predict population responses to climate change is a pressing concern. Using a “natural experiment,” we show that testing for divergent evolution in wild populations from contrasting thermal environments provides a powerful approach, and likely an enhanced predictive power for...
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Language: | English |
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Oxford University Press
2023
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Online Access: | https://eprints.gla.ac.uk/289440/ https://eprints.gla.ac.uk/289440/1/289440.pdf |
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ftuglasgow:oai:eprints.gla.ac.uk:289440 2023-05-15T16:50:40+02:00 Testing the predictability of morphological evolution in contrasting thermal environments Pilakouta, Natalie Humble, Joseph L. Hill, Iain D.C. Arthur, Jessica Costa, Ana P.B. Smith, Bethany A. Kristjánsson, Bjarni K. Skúlason, Skúli Killen, Shaun S. Lindström, Jan Metcalfe, Neil B. Parsons, Kevin J. 2023-01-01 text https://eprints.gla.ac.uk/289440/ https://eprints.gla.ac.uk/289440/1/289440.pdf en eng Oxford University Press https://eprints.gla.ac.uk/289440/1/289440.pdf Pilakouta, N. et al. (2023) Testing the predictability of morphological evolution in contrasting thermal environments. Evolution <https://eprints.gla.ac.uk/view/journal_volume/Evolution.html>, 77(1), pp. 239-253. (doi:10.1093/evolut/qpac018 <https://doi.org/10.1093/evolut/qpac018>) (PMID:36622731) cc_by_4 Articles PeerReviewed 2023 ftuglasgow https://doi.org/10.1093/evolut/qpac018 2023-04-06T22:09:33Z Gaining the ability to predict population responses to climate change is a pressing concern. Using a “natural experiment,” we show that testing for divergent evolution in wild populations from contrasting thermal environments provides a powerful approach, and likely an enhanced predictive power for responses to climate change. Specifically, we used a unique study system in Iceland, where freshwater populations of threespine sticklebacks (Gasterosteus aculeatus) are found in waters warmed by geothermal activity, adjacent to populations in ambient-temperature water. We focused on morphological traits across six pairs from warm and cold habitats. We found that fish from warm habitats tended to have a deeper mid-body, a subterminally orientated jaw, steeper craniofacial profile, and deeper caudal region relative to fish from cold habitats. Our common garden experiment showed that most of these differences were heritable. Population age did not appear to influence the magnitude or type of thermal divergence, but similar types of divergence between thermal habitats were more prevalent across allopatric than sympatric population pairs. These findings suggest that morphological divergence in response to thermal habitat, despite being relatively complex and multivariate, are predictable to a degree. Our data also suggest that the potential for migration of individuals between different thermal habitats may enhance nonparallel evolution and reduce our ability to predict responses to climate change. Article in Journal/Newspaper Iceland University of Glasgow: Enlighten - Publications Evolution 77 1 239 253 |
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Open Polar |
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University of Glasgow: Enlighten - Publications |
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ftuglasgow |
language |
English |
description |
Gaining the ability to predict population responses to climate change is a pressing concern. Using a “natural experiment,” we show that testing for divergent evolution in wild populations from contrasting thermal environments provides a powerful approach, and likely an enhanced predictive power for responses to climate change. Specifically, we used a unique study system in Iceland, where freshwater populations of threespine sticklebacks (Gasterosteus aculeatus) are found in waters warmed by geothermal activity, adjacent to populations in ambient-temperature water. We focused on morphological traits across six pairs from warm and cold habitats. We found that fish from warm habitats tended to have a deeper mid-body, a subterminally orientated jaw, steeper craniofacial profile, and deeper caudal region relative to fish from cold habitats. Our common garden experiment showed that most of these differences were heritable. Population age did not appear to influence the magnitude or type of thermal divergence, but similar types of divergence between thermal habitats were more prevalent across allopatric than sympatric population pairs. These findings suggest that morphological divergence in response to thermal habitat, despite being relatively complex and multivariate, are predictable to a degree. Our data also suggest that the potential for migration of individuals between different thermal habitats may enhance nonparallel evolution and reduce our ability to predict responses to climate change. |
format |
Article in Journal/Newspaper |
author |
Pilakouta, Natalie Humble, Joseph L. Hill, Iain D.C. Arthur, Jessica Costa, Ana P.B. Smith, Bethany A. Kristjánsson, Bjarni K. Skúlason, Skúli Killen, Shaun S. Lindström, Jan Metcalfe, Neil B. Parsons, Kevin J. |
spellingShingle |
Pilakouta, Natalie Humble, Joseph L. Hill, Iain D.C. Arthur, Jessica Costa, Ana P.B. Smith, Bethany A. Kristjánsson, Bjarni K. Skúlason, Skúli Killen, Shaun S. Lindström, Jan Metcalfe, Neil B. Parsons, Kevin J. Testing the predictability of morphological evolution in contrasting thermal environments |
author_facet |
Pilakouta, Natalie Humble, Joseph L. Hill, Iain D.C. Arthur, Jessica Costa, Ana P.B. Smith, Bethany A. Kristjánsson, Bjarni K. Skúlason, Skúli Killen, Shaun S. Lindström, Jan Metcalfe, Neil B. Parsons, Kevin J. |
author_sort |
Pilakouta, Natalie |
title |
Testing the predictability of morphological evolution in contrasting thermal environments |
title_short |
Testing the predictability of morphological evolution in contrasting thermal environments |
title_full |
Testing the predictability of morphological evolution in contrasting thermal environments |
title_fullStr |
Testing the predictability of morphological evolution in contrasting thermal environments |
title_full_unstemmed |
Testing the predictability of morphological evolution in contrasting thermal environments |
title_sort |
testing the predictability of morphological evolution in contrasting thermal environments |
publisher |
Oxford University Press |
publishDate |
2023 |
url |
https://eprints.gla.ac.uk/289440/ https://eprints.gla.ac.uk/289440/1/289440.pdf |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
https://eprints.gla.ac.uk/289440/1/289440.pdf Pilakouta, N. et al. (2023) Testing the predictability of morphological evolution in contrasting thermal environments. Evolution <https://eprints.gla.ac.uk/view/journal_volume/Evolution.html>, 77(1), pp. 239-253. (doi:10.1093/evolut/qpac018 <https://doi.org/10.1093/evolut/qpac018>) (PMID:36622731) |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1093/evolut/qpac018 |
container_title |
Evolution |
container_volume |
77 |
container_issue |
1 |
container_start_page |
239 |
op_container_end_page |
253 |
_version_ |
1766040787501449216 |