No evidence for hybridization between Calanus finmarchicus and Calanus glacialis in a subarctic area of sympatry
Abstract In the North Atlantic and the Arctic Ocean, four species of the copepod genus Calanus dominate the zooplankton biomass. Because of their morphological resemblance, knowledge of their respective distribution range has long been biased by misidentification, until the recent use of molecular t...
Published in: | Limnology and Oceanography |
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crwiley:10.1002/lno.11583 2024-06-02T08:01:48+00:00 No evidence for hybridization between Calanus finmarchicus and Calanus glacialis in a subarctic area of sympatry Choquet, Marvin Burckard, Gauthier Skreslet, Stig Hoarau, Galice Søreide, Janne E. Norges Forskningsråd 2020 http://dx.doi.org/10.1002/lno.11583 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11583 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11583 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11583 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Limnology and Oceanography volume 66, issue S1 ISSN 0024-3590 1939-5590 journal-article 2020 crwiley https://doi.org/10.1002/lno.11583 2024-05-03T11:13:26Z Abstract In the North Atlantic and the Arctic Ocean, four species of the copepod genus Calanus dominate the zooplankton biomass. Because of their morphological resemblance, knowledge of their respective distribution range has long been biased by misidentification, until the recent use of molecular tools uncovered numerous areas of sympatry. As hybridization between Calanus finmarchicus and Calanus glacialis has been claimed in the East‐Canadian Arctic based on microsatellites, we investigated further the potential for interbreeding in newly uncovered areas of sympatry. Calanus species and stage composition were analyzed during winter in two Norwegian subarctic fjords, using molecular markers developed specifically for species identification and hybrid detection between C. finmarchicus and C. glacialis . Overall, C. glacialis were the most abundant throughout the winter, followed by C. finmarchicus and Calanus hyperboreus with only a few records of Calanus helgolandicus . The presence of C. glacialis , C. hyperboreus , and C. finmarchicus' nauplii was recorded, indicating that these species reproduce locally. In January and February, the simultaneous occurrence of males and females of both C. finmarchicus and C. glacialis suggested a potential for interspecies mating. However, genetic admixture tests performed on all 1126 individuals revealed no signal of hybridization, implying a strong reproductive isolation mechanism. We conclude that no evidence supports a potential for hybridization between C. finmarchicus and C. glacialis . Article in Journal/Newspaper Arctic Arctic Ocean Calanus finmarchicus Calanus glacialis Calanus hyperboreus North Atlantic Subarctic Zooplankton Wiley Online Library Arctic Arctic Ocean Limnology and Oceanography 66 S1 |
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Wiley Online Library |
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language |
English |
description |
Abstract In the North Atlantic and the Arctic Ocean, four species of the copepod genus Calanus dominate the zooplankton biomass. Because of their morphological resemblance, knowledge of their respective distribution range has long been biased by misidentification, until the recent use of molecular tools uncovered numerous areas of sympatry. As hybridization between Calanus finmarchicus and Calanus glacialis has been claimed in the East‐Canadian Arctic based on microsatellites, we investigated further the potential for interbreeding in newly uncovered areas of sympatry. Calanus species and stage composition were analyzed during winter in two Norwegian subarctic fjords, using molecular markers developed specifically for species identification and hybrid detection between C. finmarchicus and C. glacialis . Overall, C. glacialis were the most abundant throughout the winter, followed by C. finmarchicus and Calanus hyperboreus with only a few records of Calanus helgolandicus . The presence of C. glacialis , C. hyperboreus , and C. finmarchicus' nauplii was recorded, indicating that these species reproduce locally. In January and February, the simultaneous occurrence of males and females of both C. finmarchicus and C. glacialis suggested a potential for interspecies mating. However, genetic admixture tests performed on all 1126 individuals revealed no signal of hybridization, implying a strong reproductive isolation mechanism. We conclude that no evidence supports a potential for hybridization between C. finmarchicus and C. glacialis . |
author2 |
Norges Forskningsråd |
format |
Article in Journal/Newspaper |
author |
Choquet, Marvin Burckard, Gauthier Skreslet, Stig Hoarau, Galice Søreide, Janne E. |
spellingShingle |
Choquet, Marvin Burckard, Gauthier Skreslet, Stig Hoarau, Galice Søreide, Janne E. No evidence for hybridization between Calanus finmarchicus and Calanus glacialis in a subarctic area of sympatry |
author_facet |
Choquet, Marvin Burckard, Gauthier Skreslet, Stig Hoarau, Galice Søreide, Janne E. |
author_sort |
Choquet, Marvin |
title |
No evidence for hybridization between Calanus finmarchicus and Calanus glacialis in a subarctic area of sympatry |
title_short |
No evidence for hybridization between Calanus finmarchicus and Calanus glacialis in a subarctic area of sympatry |
title_full |
No evidence for hybridization between Calanus finmarchicus and Calanus glacialis in a subarctic area of sympatry |
title_fullStr |
No evidence for hybridization between Calanus finmarchicus and Calanus glacialis in a subarctic area of sympatry |
title_full_unstemmed |
No evidence for hybridization between Calanus finmarchicus and Calanus glacialis in a subarctic area of sympatry |
title_sort |
no evidence for hybridization between calanus finmarchicus and calanus glacialis in a subarctic area of sympatry |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/lno.11583 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11583 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11583 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11583 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Calanus finmarchicus Calanus glacialis Calanus hyperboreus North Atlantic Subarctic Zooplankton |
genre_facet |
Arctic Arctic Ocean Calanus finmarchicus Calanus glacialis Calanus hyperboreus North Atlantic Subarctic Zooplankton |
op_source |
Limnology and Oceanography volume 66, issue S1 ISSN 0024-3590 1939-5590 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/lno.11583 |
container_title |
Limnology and Oceanography |
container_volume |
66 |
container_issue |
S1 |
_version_ |
1800746298999046144 |