北海道南西部における秋季のスケトウダラの分布と成熟
In order to elucidate the association between the distribution and maturation of adult walleye pollock Theragra chalcogramma, otter trawl samplings were carried out in the Japan Sea off the southwest Hokkaido in October from 1989 to 1994. CPUE values of walleye pollock were significantly higher in t...
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Online Access: | http://hdl.handle.net/2115/38418 https://doi.org/10.2331/suisan.65.223 |
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/38418 2023-05-15T18:32:51+02:00 北海道南西部における秋季のスケトウダラの分布と成熟 Distribution and Maturation of Adult Walleye Pollock in Autumn in the Japan Sea off Southwest Hokkaido 亀井, 佳彦 高津, 哲也 高木, 省吾 中谷, 敏邦 高橋, 豊美 前田, 辰昭 http://hdl.handle.net/2115/38418 https://doi.org/10.2331/suisan.65.223 jpn jpn 日本水産学会 http://ci.nii.ac.jp/naid/110003144779 http://hdl.handle.net/2115/38418 日本水産学会誌, 65(2): 223-229 http://dx.doi.org/10.2331/suisan.65.223 本文データは学協会の許諾に基づきCiNiiから複製したものである © 1999 公益社団法人日本水産学会 © 1999 The Japanese Society of Fisheries Science スケトウダラ 北海道南西部沖合 分布 成熟 産卵回遊 663 article fthokunivhus https://doi.org/10.2331/suisan.65.223 2022-11-18T01:01:45Z In order to elucidate the association between the distribution and maturation of adult walleye pollock Theragra chalcogramma, otter trawl samplings were carried out in the Japan Sea off the southwest Hokkaido in October from 1989 to 1994. CPUE values of walleye pollock were significantly higher in the coastal region than those in the offshore region through the sampling years except for 1994. Proportions of males were significantly higher in the coastal region except for 1993 and 1994. Many males were nearly mature, and no differences in male gonad indices were found either between coastal and offshore regions or among the coastal areas. In contrast, females collected in the coastal region were more mature than those in the offshore region. Clear geographical differences in body length were not found either among males or among females. Sexual differences in reproductive behavior and maturity might be responsible for the skewed distribution pattern of adult walleye pollock in October. Article in Journal/Newspaper Theragra chalcogramma Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) NIPPON SUISAN GAKKAISHI 65 2 223 229 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
Japanese |
topic |
スケトウダラ 北海道南西部沖合 分布 成熟 産卵回遊 663 |
spellingShingle |
スケトウダラ 北海道南西部沖合 分布 成熟 産卵回遊 663 亀井, 佳彦 高津, 哲也 高木, 省吾 中谷, 敏邦 高橋, 豊美 前田, 辰昭 北海道南西部における秋季のスケトウダラの分布と成熟 |
topic_facet |
スケトウダラ 北海道南西部沖合 分布 成熟 産卵回遊 663 |
description |
In order to elucidate the association between the distribution and maturation of adult walleye pollock Theragra chalcogramma, otter trawl samplings were carried out in the Japan Sea off the southwest Hokkaido in October from 1989 to 1994. CPUE values of walleye pollock were significantly higher in the coastal region than those in the offshore region through the sampling years except for 1994. Proportions of males were significantly higher in the coastal region except for 1993 and 1994. Many males were nearly mature, and no differences in male gonad indices were found either between coastal and offshore regions or among the coastal areas. In contrast, females collected in the coastal region were more mature than those in the offshore region. Clear geographical differences in body length were not found either among males or among females. Sexual differences in reproductive behavior and maturity might be responsible for the skewed distribution pattern of adult walleye pollock in October. |
format |
Article in Journal/Newspaper |
author |
亀井, 佳彦 高津, 哲也 高木, 省吾 中谷, 敏邦 高橋, 豊美 前田, 辰昭 |
author_facet |
亀井, 佳彦 高津, 哲也 高木, 省吾 中谷, 敏邦 高橋, 豊美 前田, 辰昭 |
author_sort |
亀井, 佳彦 |
title |
北海道南西部における秋季のスケトウダラの分布と成熟 |
title_short |
北海道南西部における秋季のスケトウダラの分布と成熟 |
title_full |
北海道南西部における秋季のスケトウダラの分布と成熟 |
title_fullStr |
北海道南西部における秋季のスケトウダラの分布と成熟 |
title_full_unstemmed |
北海道南西部における秋季のスケトウダラの分布と成熟 |
title_sort |
北海道南西部における秋季のスケトウダラの分布と成熟 |
publisher |
日本水産学会 |
url |
http://hdl.handle.net/2115/38418 https://doi.org/10.2331/suisan.65.223 |
genre |
Theragra chalcogramma |
genre_facet |
Theragra chalcogramma |
op_relation |
http://ci.nii.ac.jp/naid/110003144779 http://hdl.handle.net/2115/38418 日本水産学会誌, 65(2): 223-229 http://dx.doi.org/10.2331/suisan.65.223 |
op_rights |
本文データは学協会の許諾に基づきCiNiiから複製したものである © 1999 公益社団法人日本水産学会 © 1999 The Japanese Society of Fisheries Science |
op_doi |
https://doi.org/10.2331/suisan.65.223 |
container_title |
NIPPON SUISAN GAKKAISHI |
container_volume |
65 |
container_issue |
2 |
container_start_page |
223 |
op_container_end_page |
229 |
_version_ |
1766217055228395520 |