| Title |
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ja
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
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en
Distribution and Maturation of Adult Walleye Pollock in Autumn in the Japan Sea off Southwest Hokkaido
|
| Creator |
-
-
ja
亀井, 佳彦
en
Kamei, Yoshihiko
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-
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ja
高木, 省吾
en
Takagi, Shogo
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-
|
| Accessrights |
open access |
| Rights |
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ja
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
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ja
© 1999 公益社団法人日本水産学会
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en
© 1999 The Japanese Society of Fisheries Science
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| Subject |
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Other
ja
スケトウダラ
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Other
en
北海道南西部沖合
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Other
en
分布
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Other
en
成熟
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Other
en
産卵回遊
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NDC
663
|
| Description |
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Abstract
en
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.
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| Publisher |
ja
日本水産学会
en
The Japanese Society of Scientific Fisheries
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| Date |
|
| Language |
|
| Resource Type |
journal article |
| Version Type |
VoR |
| Identifier |
HDL
http://hdl.handle.net/2115/38418
|
| Relation |
-
isVersionOf
URI
http://ci.nii.ac.jp/naid/110003144779
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isIdenticalTo
DOI
https://doi.org/10.2331/suisan.65.223
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NAID
110003144779
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| Journal |
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PISSN
0021-5392
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NCID
AN00193422
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ja
日本水産学会誌
en
Bulletin of the Japanese Society of Scientific Fisheries
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Volume Number65
Issue Number2
Page Start223
Page End229
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| File |
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| Oaidate |
2023-07-26 |
