A mitogenomic approach to the taxonomy of pollocks. Theragra chalcogramma and T. finnmarchica represent one single species
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 sp...
Published in: | BMC Evolutionary Biology |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
BioMed Central
2007
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/1155 https://doi.org/10.1186/1471-2148-7-86 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/1155 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/1155 2024-06-02T08:03:12+00:00 A mitogenomic approach to the taxonomy of pollocks. Theragra chalcogramma and T. finnmarchica represent one single species Ursvik, Anita Breines, Ragna Christiansen, Jørgen Schou Fevolden, Jan-Erik Coucheron, Dag H. Johansen, Steinar D. 2007-06-07 290788 bytes application/pdf https://hdl.handle.net/10037/1155 https://doi.org/10.1186/1471-2148-7-86 eng eng BioMed Central BMC Evolutionary Biology 7(2007), article no 86 pp 8 doi:10.1186/1471-2148-7-86 1471-2148 https://hdl.handle.net/10037/1155 URN:NBN:no-uit_munin_971 openAccess VDP::Mathematics and natural science: 400::Basic biosciences: 470::Genetics and genomics: 474 Genetikk og genomikk walleye pollock Norwegian pollock Journal article Tidsskriftartikkel Peer reviewed 2007 ftunivtroemsoe https://doi.org/10.1186/1471-2148-7-86 2024-05-07T08:41:49Z 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 University of Tromsø: Munin Open Research Archive Bering Sea Pacific BMC Evolutionary Biology 7 1 86 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Basic biosciences: 470::Genetics and genomics: 474 Genetikk og genomikk walleye pollock Norwegian pollock |
spellingShingle |
VDP::Mathematics and natural science: 400::Basic biosciences: 470::Genetics and genomics: 474 Genetikk og genomikk walleye pollock Norwegian pollock Ursvik, Anita Breines, Ragna Christiansen, Jørgen Schou Fevolden, Jan-Erik Coucheron, Dag H. Johansen, Steinar D. A mitogenomic approach to the taxonomy of pollocks. Theragra chalcogramma and T. finnmarchica represent one single species |
topic_facet |
VDP::Mathematics and natural science: 400::Basic biosciences: 470::Genetics and genomics: 474 Genetikk og genomikk walleye pollock Norwegian pollock |
description |
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 |
Ursvik, Anita Breines, Ragna Christiansen, Jørgen Schou Fevolden, Jan-Erik Coucheron, Dag H. Johansen, Steinar D. |
author_facet |
Ursvik, Anita Breines, Ragna Christiansen, Jørgen Schou Fevolden, Jan-Erik Coucheron, Dag H. Johansen, Steinar D. |
author_sort |
Ursvik, Anita |
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 |
BioMed Central |
publishDate |
2007 |
url |
https://hdl.handle.net/10037/1155 https://doi.org/10.1186/1471-2148-7-86 |
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_relation |
BMC Evolutionary Biology 7(2007), article no 86 pp 8 doi:10.1186/1471-2148-7-86 1471-2148 https://hdl.handle.net/10037/1155 URN:NBN:no-uit_munin_971 |
op_rights |
openAccess |
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 |
_version_ |
1800747679994609664 |