A mitogenomic approach to the taxonomy of pollocks: Theragra chalcogramma and T. finnmarchica represent one single species
Abstract Background The walleye pollock ( Theragra chalcogramma ) and Norwegian pollock ( T. finnmarchica ) are confined to the North Pacific and North Atlantic Oceans, respectively, and considered as distinct species within the family Gadidae. We have determined the complete mtDNA nucleotide sequen...
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ftdoajarticles:oai:doaj.org/article:a816e5312f084764b2949ce831b35169 2023-05-15T15:27:34+02:00 A mitogenomic approach to the taxonomy of pollocks: Theragra chalcogramma and T. finnmarchica represent one single species Coucheron Dag H Fevolden Svein-Erik Christiansen Jørgen Breines Ragna Ursvik Anita Johansen Steinar D 2007-06-01T00:00:00Z https://doi.org/10.1186/1471-2148-7-86 https://doaj.org/article/a816e5312f084764b2949ce831b35169 EN eng BMC http://www.biomedcentral.com/1471-2148/7/86 https://doaj.org/toc/1471-2148 doi:10.1186/1471-2148-7-86 1471-2148 https://doaj.org/article/a816e5312f084764b2949ce831b35169 BMC Evolutionary Biology, Vol 7, Iss 1, p 86 (2007) Evolution QH359-425 article 2007 ftdoajarticles https://doi.org/10.1186/1471-2148-7-86 2022-12-31T05:01:49Z Abstract Background The walleye pollock ( Theragra chalcogramma ) and Norwegian pollock ( T. finnmarchica ) are confined to the North Pacific and North Atlantic Oceans, respectively, and considered as distinct species within the family Gadidae. We have determined the complete mtDNA nucleotide sequence of two specimens of Norwegian pollock and compared the sequences to that of 10 specimens of walleye pollock representing stocks from the Sea of Japan and the Bering Sea, 2 specimens of Atlantic cod ( Gadus morhua ), and 2 specimens of haddock ( Melanogrammus aeglefinus ). Results A total number of 204 variable positions were identified among the 12 pollock specimens, but no specific substitution pattern could be identified between the walleye and Norwegian pollocks. Phylogenetic analysis using 16.500 homologous mtDNA nucleotide positions clearly identify the Norwegian pollock within the walleye pollock species cluster. Furthermore, the Norwegian pollock sequences were most similar to mitochondrial genotypes present in walleye pollock specimens from the Sea of Japan, an observation supported both by neighbor-joining, maximum parsimony, and maximum likelihood analyses. Conclusion We infer that walleye pollock and Norwegian pollock represent one single species and that Norwegian pollock has been recently introduced from the Pacific to the Atlantic Oceans. Article in Journal/Newspaper atlantic cod Bering Sea Gadus morhua North Atlantic norwegian pollock Theragra chalcogramma Directory of Open Access Journals: DOAJ Articles Bering Sea Pacific BMC Evolutionary Biology 7 1 86 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Evolution QH359-425 |
spellingShingle |
Evolution QH359-425 Coucheron Dag H Fevolden Svein-Erik Christiansen Jørgen Breines Ragna Ursvik Anita Johansen Steinar D A mitogenomic approach to the taxonomy of pollocks: Theragra chalcogramma and T. finnmarchica represent one single species |
topic_facet |
Evolution QH359-425 |
description |
Abstract Background The walleye pollock ( Theragra chalcogramma ) and Norwegian pollock ( T. finnmarchica ) are confined to the North Pacific and North Atlantic Oceans, respectively, and considered as distinct species within the family Gadidae. We have determined the complete mtDNA nucleotide sequence of two specimens of Norwegian pollock and compared the sequences to that of 10 specimens of walleye pollock representing stocks from the Sea of Japan and the Bering Sea, 2 specimens of Atlantic cod ( Gadus morhua ), and 2 specimens of haddock ( Melanogrammus aeglefinus ). Results A total number of 204 variable positions were identified among the 12 pollock specimens, but no specific substitution pattern could be identified between the walleye and Norwegian pollocks. Phylogenetic analysis using 16.500 homologous mtDNA nucleotide positions clearly identify the Norwegian pollock within the walleye pollock species cluster. Furthermore, the Norwegian pollock sequences were most similar to mitochondrial genotypes present in walleye pollock specimens from the Sea of Japan, an observation supported both by neighbor-joining, maximum parsimony, and maximum likelihood analyses. Conclusion We infer that walleye pollock and Norwegian pollock represent one single species and that Norwegian pollock has been recently introduced from the Pacific to the Atlantic Oceans. |
format |
Article in Journal/Newspaper |
author |
Coucheron Dag H Fevolden Svein-Erik Christiansen Jørgen Breines Ragna Ursvik Anita Johansen Steinar D |
author_facet |
Coucheron Dag H Fevolden Svein-Erik Christiansen Jørgen Breines Ragna Ursvik Anita Johansen Steinar D |
author_sort |
Coucheron Dag H |
title |
A mitogenomic approach to the taxonomy of pollocks: Theragra chalcogramma and T. finnmarchica represent one single species |
title_short |
A mitogenomic approach to the taxonomy of pollocks: Theragra chalcogramma and T. finnmarchica represent one single species |
title_full |
A mitogenomic approach to the taxonomy of pollocks: Theragra chalcogramma and T. finnmarchica represent one single species |
title_fullStr |
A mitogenomic approach to the taxonomy of pollocks: Theragra chalcogramma and T. finnmarchica represent one single species |
title_full_unstemmed |
A mitogenomic approach to the taxonomy of pollocks: Theragra chalcogramma and T. finnmarchica represent one single species |
title_sort |
mitogenomic approach to the taxonomy of pollocks: theragra chalcogramma and t. finnmarchica represent one single species |
publisher |
BMC |
publishDate |
2007 |
url |
https://doi.org/10.1186/1471-2148-7-86 https://doaj.org/article/a816e5312f084764b2949ce831b35169 |
geographic |
Bering Sea Pacific |
geographic_facet |
Bering Sea Pacific |
genre |
atlantic cod Bering Sea Gadus morhua North Atlantic norwegian pollock Theragra chalcogramma |
genre_facet |
atlantic cod Bering Sea Gadus morhua North Atlantic norwegian pollock Theragra chalcogramma |
op_source |
BMC Evolutionary Biology, Vol 7, Iss 1, p 86 (2007) |
op_relation |
http://www.biomedcentral.com/1471-2148/7/86 https://doaj.org/toc/1471-2148 doi:10.1186/1471-2148-7-86 1471-2148 https://doaj.org/article/a816e5312f084764b2949ce831b35169 |
op_doi |
https://doi.org/10.1186/1471-2148-7-86 |
container_title |
BMC Evolutionary Biology |
container_volume |
7 |
container_issue |
1 |
container_start_page |
86 |
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1766357987026272256 |