Limited interspecific gene flow in the evolutionary history of the icefish genus Chionodraco
Abstract Hybridization and introgression are recognized as mechanisms promoting genetic variability during evolutionary radiations. We examined the impact of introgression in the process of speciation, focusing on the Antarctic icefish genus Chionodraco. Our analyses confirmed that the three Chionod...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Oxford University Press (OUP)
2024
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsae019 https://academic.oup.com/icesjms/article-pdf/81/4/676/57945771/fsae019.pdf |
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croxfordunivpr:10.1093/icesjms/fsae019 2024-06-23T07:45:52+00:00 Limited interspecific gene flow in the evolutionary history of the icefish genus Chionodraco Schiavon, Luca Ceballos, Santiago G Matschiner, Michael Trucchi, Emiliano La Mesa, Mario Riginella, Emilio Lucassen, Magnus Mark, Felix C Bilyk, Kevin Franch, Rafaella Wallberg, Andreas Boscari, Elisa Zane, Lorenzo Papetti, Chiara Grant, W Stewart Marie Curie Cancer Care University of Padova Research Council of Norway Italian National Programme of Antarctic Research 2024 http://dx.doi.org/10.1093/icesjms/fsae019 https://academic.oup.com/icesjms/article-pdf/81/4/676/57945771/fsae019.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by/4.0/ ICES Journal of Marine Science volume 81, issue 4, page 676-686 ISSN 1054-3139 1095-9289 journal-article 2024 croxfordunivpr https://doi.org/10.1093/icesjms/fsae019 2024-06-04T06:12:45Z Abstract Hybridization and introgression are recognized as mechanisms promoting genetic variability during evolutionary radiations. We examined the impact of introgression in the process of speciation, focusing on the Antarctic icefish genus Chionodraco. Our analyses confirmed that the three Chionodraco species (Chionodraco hamatus, Chionodraco myersi, and Chionodraco rastrospinosus) were genetically distinctive, despite signals of past interspecific gene flow between C. hamatus and C. myersi that likely occurred during interglacial periods. However, in this study, no recent hybrids were identified. The lack of contemporary hybridization may be due to life-history traits and the type of marker used in the analysis. Our study emphasizes the importance of genomic approaches to detect subtle patterns of past hybridization accurately and highlights the significance of historical climate events in the demographic and evolutionary history of Antarctic notothenioids. Polar regions, and especially the Antarctic Peninsula, are now experiencing the fastest climate changes due to global warming. Understanding the impact of past climate events is fundamental to trace current modifications in species’ genetic variability and distributions and predict future evolutionary trajectories. This knowledge is also vital for conservation efforts, including the implementation of marine protected areas. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Icefish Oxford University Press Antarctic Antarctic Peninsula The Antarctic ICES Journal of Marine Science 81 4 676 686 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Hybridization and introgression are recognized as mechanisms promoting genetic variability during evolutionary radiations. We examined the impact of introgression in the process of speciation, focusing on the Antarctic icefish genus Chionodraco. Our analyses confirmed that the three Chionodraco species (Chionodraco hamatus, Chionodraco myersi, and Chionodraco rastrospinosus) were genetically distinctive, despite signals of past interspecific gene flow between C. hamatus and C. myersi that likely occurred during interglacial periods. However, in this study, no recent hybrids were identified. The lack of contemporary hybridization may be due to life-history traits and the type of marker used in the analysis. Our study emphasizes the importance of genomic approaches to detect subtle patterns of past hybridization accurately and highlights the significance of historical climate events in the demographic and evolutionary history of Antarctic notothenioids. Polar regions, and especially the Antarctic Peninsula, are now experiencing the fastest climate changes due to global warming. Understanding the impact of past climate events is fundamental to trace current modifications in species’ genetic variability and distributions and predict future evolutionary trajectories. This knowledge is also vital for conservation efforts, including the implementation of marine protected areas. |
author2 |
Grant, W Stewart Marie Curie Cancer Care University of Padova Research Council of Norway Italian National Programme of Antarctic Research |
format |
Article in Journal/Newspaper |
author |
Schiavon, Luca Ceballos, Santiago G Matschiner, Michael Trucchi, Emiliano La Mesa, Mario Riginella, Emilio Lucassen, Magnus Mark, Felix C Bilyk, Kevin Franch, Rafaella Wallberg, Andreas Boscari, Elisa Zane, Lorenzo Papetti, Chiara |
spellingShingle |
Schiavon, Luca Ceballos, Santiago G Matschiner, Michael Trucchi, Emiliano La Mesa, Mario Riginella, Emilio Lucassen, Magnus Mark, Felix C Bilyk, Kevin Franch, Rafaella Wallberg, Andreas Boscari, Elisa Zane, Lorenzo Papetti, Chiara Limited interspecific gene flow in the evolutionary history of the icefish genus Chionodraco |
author_facet |
Schiavon, Luca Ceballos, Santiago G Matschiner, Michael Trucchi, Emiliano La Mesa, Mario Riginella, Emilio Lucassen, Magnus Mark, Felix C Bilyk, Kevin Franch, Rafaella Wallberg, Andreas Boscari, Elisa Zane, Lorenzo Papetti, Chiara |
author_sort |
Schiavon, Luca |
title |
Limited interspecific gene flow in the evolutionary history of the icefish genus Chionodraco |
title_short |
Limited interspecific gene flow in the evolutionary history of the icefish genus Chionodraco |
title_full |
Limited interspecific gene flow in the evolutionary history of the icefish genus Chionodraco |
title_fullStr |
Limited interspecific gene flow in the evolutionary history of the icefish genus Chionodraco |
title_full_unstemmed |
Limited interspecific gene flow in the evolutionary history of the icefish genus Chionodraco |
title_sort |
limited interspecific gene flow in the evolutionary history of the icefish genus chionodraco |
publisher |
Oxford University Press (OUP) |
publishDate |
2024 |
url |
http://dx.doi.org/10.1093/icesjms/fsae019 https://academic.oup.com/icesjms/article-pdf/81/4/676/57945771/fsae019.pdf |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Icefish |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Icefish |
op_source |
ICES Journal of Marine Science volume 81, issue 4, page 676-686 ISSN 1054-3139 1095-9289 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/icesjms/fsae019 |
container_title |
ICES Journal of Marine Science |
container_volume |
81 |
container_issue |
4 |
container_start_page |
676 |
op_container_end_page |
686 |
_version_ |
1802642759353368576 |