Geographical variations in infection by larval Anisakis simplex and Contracaecum osculatum (Nematoda, Anisakidae) in walleye pollock Theragra chalcogramma stocks off Hokkaido, Japan
Stocks of walleye pollock Theragra chalcogramma collected from: (i) the Sea of Japan (off Rebun Island and Kumaishi); (ii) the Pacific coast (off Shikabe and eastern Hokkaido); and (iii) Nemuro Strait off Hokkaido, northern Japan, were examined for anisakid nematodes during December 1999 to February...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/35583 2023-05-15T18:32:50+02:00 Geographical variations in infection by larval Anisakis simplex and Contracaecum osculatum (Nematoda, Anisakidae) in walleye pollock Theragra chalcogramma stocks off Hokkaido, Japan Konishi, Kenji Sakurai, Yasunori http://hdl.handle.net/2115/35583 https://doi.org/10.1046/j.1444-2906.2002.00459.x eng eng The Japanese Society of Scientific Fisheries http://hdl.handle.net/2115/35583 Fisheries Science, 68(3): 534-542 http://dx.doi.org/10.1046/j.1444-2906.2002.00459.x © 2002 公益社団法人日本水産学会 © 2002 The Japanese Society of Fisheries Science Anisakidae Anisakis simplex Contracaecum osculatum geographic variation Nematoda Theragra chalcogramma walleye pollock 660 article fthokunivhus https://doi.org/10.1046/j.1444-2906.2002.00459.x 2022-11-18T01:01:42Z Stocks of walleye pollock Theragra chalcogramma collected from: (i) the Sea of Japan (off Rebun Island and Kumaishi); (ii) the Pacific coast (off Shikabe and eastern Hokkaido); and (iii) Nemuro Strait off Hokkaido, northern Japan, were examined for anisakid nematodes during December 1999 to February 2000, and the prevalence and abundance of Anisakis simplex and Contracaecum osculatum larvae were compared among the various sampling sites for fish of the same size and age. Anisakis simplex was generally more abundant than C. osculatum. Infection by A. simplex varied between the aforementioned stocks of walleye pollock as well as within stocks, whereby fish from off Rebun Island and Nemuro Strait were infected the most, followed by those from off the Pacific coast and Kumaishi. Infection by C. osculatum differed between the host stocks, and C. osculatum was the most abundant among the fish from Nemuro Strait. The infection variations seemed to be due to differences in host growth rate, host feeding habit, and the distribution of marine mammal final hosts. The results indicate that these two larval nematodes are useful biological indicators for the population study of walleye pollock in Japanese waters. Article in Journal/Newspaper Theragra chalcogramma Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Pacific Fisheries Science 68 3 534 542 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
Anisakidae Anisakis simplex Contracaecum osculatum geographic variation Nematoda Theragra chalcogramma walleye pollock 660 |
spellingShingle |
Anisakidae Anisakis simplex Contracaecum osculatum geographic variation Nematoda Theragra chalcogramma walleye pollock 660 Konishi, Kenji Sakurai, Yasunori Geographical variations in infection by larval Anisakis simplex and Contracaecum osculatum (Nematoda, Anisakidae) in walleye pollock Theragra chalcogramma stocks off Hokkaido, Japan |
topic_facet |
Anisakidae Anisakis simplex Contracaecum osculatum geographic variation Nematoda Theragra chalcogramma walleye pollock 660 |
description |
Stocks of walleye pollock Theragra chalcogramma collected from: (i) the Sea of Japan (off Rebun Island and Kumaishi); (ii) the Pacific coast (off Shikabe and eastern Hokkaido); and (iii) Nemuro Strait off Hokkaido, northern Japan, were examined for anisakid nematodes during December 1999 to February 2000, and the prevalence and abundance of Anisakis simplex and Contracaecum osculatum larvae were compared among the various sampling sites for fish of the same size and age. Anisakis simplex was generally more abundant than C. osculatum. Infection by A. simplex varied between the aforementioned stocks of walleye pollock as well as within stocks, whereby fish from off Rebun Island and Nemuro Strait were infected the most, followed by those from off the Pacific coast and Kumaishi. Infection by C. osculatum differed between the host stocks, and C. osculatum was the most abundant among the fish from Nemuro Strait. The infection variations seemed to be due to differences in host growth rate, host feeding habit, and the distribution of marine mammal final hosts. The results indicate that these two larval nematodes are useful biological indicators for the population study of walleye pollock in Japanese waters. |
format |
Article in Journal/Newspaper |
author |
Konishi, Kenji Sakurai, Yasunori |
author_facet |
Konishi, Kenji Sakurai, Yasunori |
author_sort |
Konishi, Kenji |
title |
Geographical variations in infection by larval Anisakis simplex and Contracaecum osculatum (Nematoda, Anisakidae) in walleye pollock Theragra chalcogramma stocks off Hokkaido, Japan |
title_short |
Geographical variations in infection by larval Anisakis simplex and Contracaecum osculatum (Nematoda, Anisakidae) in walleye pollock Theragra chalcogramma stocks off Hokkaido, Japan |
title_full |
Geographical variations in infection by larval Anisakis simplex and Contracaecum osculatum (Nematoda, Anisakidae) in walleye pollock Theragra chalcogramma stocks off Hokkaido, Japan |
title_fullStr |
Geographical variations in infection by larval Anisakis simplex and Contracaecum osculatum (Nematoda, Anisakidae) in walleye pollock Theragra chalcogramma stocks off Hokkaido, Japan |
title_full_unstemmed |
Geographical variations in infection by larval Anisakis simplex and Contracaecum osculatum (Nematoda, Anisakidae) in walleye pollock Theragra chalcogramma stocks off Hokkaido, Japan |
title_sort |
geographical variations in infection by larval anisakis simplex and contracaecum osculatum (nematoda, anisakidae) in walleye pollock theragra chalcogramma stocks off hokkaido, japan |
publisher |
The Japanese Society of Scientific Fisheries |
url |
http://hdl.handle.net/2115/35583 https://doi.org/10.1046/j.1444-2906.2002.00459.x |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Theragra chalcogramma |
genre_facet |
Theragra chalcogramma |
op_relation |
http://hdl.handle.net/2115/35583 Fisheries Science, 68(3): 534-542 http://dx.doi.org/10.1046/j.1444-2906.2002.00459.x |
op_rights |
© 2002 公益社団法人日本水産学会 © 2002 The Japanese Society of Fisheries Science |
op_doi |
https://doi.org/10.1046/j.1444-2906.2002.00459.x |
container_title |
Fisheries Science |
container_volume |
68 |
container_issue |
3 |
container_start_page |
534 |
op_container_end_page |
542 |
_version_ |
1766217028750802944 |