Molecular Phylogenetic Analysis of Euphausia pacifica, Thysanoessa longipes and T. inermis (Crustacea : Euphausiacea) in the Subarctic Pacific Region, with Notes on Non-Geographical Genetic Variations for E. pacifica
Nucleotide sequences of a 1,854 base pair region of the nuclear small subunit(18S)rDNA gene and of a 475 or 476 base pair region of the mitochondrial large subunit(mt16S)rRNA gene were determined for Euphausia pacifica collected from the western/eastern subarctic Pacific,Okhotsk Sea and Japan Sea, a...
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北海道大学大学院水産科学研究院
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/32480 2023-05-15T15:43:32+02:00 Molecular Phylogenetic Analysis of Euphausia pacifica, Thysanoessa longipes and T. inermis (Crustacea : Euphausiacea) in the Subarctic Pacific Region, with Notes on Non-Geographical Genetic Variations for E. pacifica Takahashi, Tomokazu Taniguchi, Marina Sawabe, Tomoo Christen, Richard Ikeda, Tsutomu http://hdl.handle.net/2115/32480 eng eng 北海道大学大学院水産科学研究院 http://hdl.handle.net/2115/32480 北海道大学水産科学研究彙報, 57(1-2): 1-8 Euphausia pacifica Thysanoessa inermis Thysanoessa longipes 18S rDNA 16S rRNA subarctic Pacific population genetics 660 bulletin (article) fthokunivhus 2022-11-18T01:01:34Z Nucleotide sequences of a 1,854 base pair region of the nuclear small subunit(18S)rDNA gene and of a 475 or 476 base pair region of the mitochondrial large subunit(mt16S)rRNA gene were determined for Euphausia pacifica collected from the western/eastern subarctic Pacific,Okhotsk Sea and Japan Sea, and Thysanoessa inermis from the Okhotsk Sea T.inermis from the Okhotsk Sea and Bering Sea. Interspecific differences were 0.16-0.86% for 18S rDNA gene and 2.3-9.3%for 16S rRNA gene. Intraspefic differences are of special interest of E.pacifica from geographically distant sites,but were very small(0.0-<0.1%for 18S rDNA, and 0.0-0.4%for 16S rRNA). The lack of the regional haplotype structure in E.pacifica suggests significant gene flow mediated by the ocean-scale circulation system for those living in the west-east subarctic Pacific and Bering Sea. For the Japan Sea population which has been isolated from populations in the Subarctic Current originating 8,000 years ago,the time scale is considered to be not long enough to observe variations. On the basis of phylogenetic trees established,the position of the three euphausiids was briefly discussed. Article in Journal/Newspaper Bering Sea okhotsk sea Subarctic Thysanoessa inermis Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Bering Sea Okhotsk Pacific |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
Euphausia pacifica Thysanoessa inermis Thysanoessa longipes 18S rDNA 16S rRNA subarctic Pacific population genetics 660 |
spellingShingle |
Euphausia pacifica Thysanoessa inermis Thysanoessa longipes 18S rDNA 16S rRNA subarctic Pacific population genetics 660 Takahashi, Tomokazu Taniguchi, Marina Sawabe, Tomoo Christen, Richard Ikeda, Tsutomu Molecular Phylogenetic Analysis of Euphausia pacifica, Thysanoessa longipes and T. inermis (Crustacea : Euphausiacea) in the Subarctic Pacific Region, with Notes on Non-Geographical Genetic Variations for E. pacifica |
topic_facet |
Euphausia pacifica Thysanoessa inermis Thysanoessa longipes 18S rDNA 16S rRNA subarctic Pacific population genetics 660 |
description |
Nucleotide sequences of a 1,854 base pair region of the nuclear small subunit(18S)rDNA gene and of a 475 or 476 base pair region of the mitochondrial large subunit(mt16S)rRNA gene were determined for Euphausia pacifica collected from the western/eastern subarctic Pacific,Okhotsk Sea and Japan Sea, and Thysanoessa inermis from the Okhotsk Sea T.inermis from the Okhotsk Sea and Bering Sea. Interspecific differences were 0.16-0.86% for 18S rDNA gene and 2.3-9.3%for 16S rRNA gene. Intraspefic differences are of special interest of E.pacifica from geographically distant sites,but were very small(0.0-<0.1%for 18S rDNA, and 0.0-0.4%for 16S rRNA). The lack of the regional haplotype structure in E.pacifica suggests significant gene flow mediated by the ocean-scale circulation system for those living in the west-east subarctic Pacific and Bering Sea. For the Japan Sea population which has been isolated from populations in the Subarctic Current originating 8,000 years ago,the time scale is considered to be not long enough to observe variations. On the basis of phylogenetic trees established,the position of the three euphausiids was briefly discussed. |
format |
Article in Journal/Newspaper |
author |
Takahashi, Tomokazu Taniguchi, Marina Sawabe, Tomoo Christen, Richard Ikeda, Tsutomu |
author_facet |
Takahashi, Tomokazu Taniguchi, Marina Sawabe, Tomoo Christen, Richard Ikeda, Tsutomu |
author_sort |
Takahashi, Tomokazu |
title |
Molecular Phylogenetic Analysis of Euphausia pacifica, Thysanoessa longipes and T. inermis (Crustacea : Euphausiacea) in the Subarctic Pacific Region, with Notes on Non-Geographical Genetic Variations for E. pacifica |
title_short |
Molecular Phylogenetic Analysis of Euphausia pacifica, Thysanoessa longipes and T. inermis (Crustacea : Euphausiacea) in the Subarctic Pacific Region, with Notes on Non-Geographical Genetic Variations for E. pacifica |
title_full |
Molecular Phylogenetic Analysis of Euphausia pacifica, Thysanoessa longipes and T. inermis (Crustacea : Euphausiacea) in the Subarctic Pacific Region, with Notes on Non-Geographical Genetic Variations for E. pacifica |
title_fullStr |
Molecular Phylogenetic Analysis of Euphausia pacifica, Thysanoessa longipes and T. inermis (Crustacea : Euphausiacea) in the Subarctic Pacific Region, with Notes on Non-Geographical Genetic Variations for E. pacifica |
title_full_unstemmed |
Molecular Phylogenetic Analysis of Euphausia pacifica, Thysanoessa longipes and T. inermis (Crustacea : Euphausiacea) in the Subarctic Pacific Region, with Notes on Non-Geographical Genetic Variations for E. pacifica |
title_sort |
molecular phylogenetic analysis of euphausia pacifica, thysanoessa longipes and t. inermis (crustacea : euphausiacea) in the subarctic pacific region, with notes on non-geographical genetic variations for e. pacifica |
publisher |
北海道大学大学院水産科学研究院 |
url |
http://hdl.handle.net/2115/32480 |
geographic |
Bering Sea Okhotsk Pacific |
geographic_facet |
Bering Sea Okhotsk Pacific |
genre |
Bering Sea okhotsk sea Subarctic Thysanoessa inermis |
genre_facet |
Bering Sea okhotsk sea Subarctic Thysanoessa inermis |
op_relation |
http://hdl.handle.net/2115/32480 北海道大学水産科学研究彙報, 57(1-2): 1-8 |
_version_ |
1766377713538433024 |