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  1. 学術雑誌論文

High reproductive potential of the commercially exploited shark Squalus suckleyi in the major fishing grounds of the western North Pacific

https://fra.repo.nii.ac.jp/records/2000208
https://fra.repo.nii.ac.jp/records/2000208
14fb4b07-764d-45c4-aaf9-31b263e2926a
名前 / ファイル ライセンス アクション
Journal Journal of Fish Biology - 2023 - Yano - High reproductive potential of the commercially exploited shark Squalus suckleyi in.pdf (1.1 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2024-02-21
タイトル
タイトル High reproductive potential of the commercially exploited shark Squalus suckleyi in the major fishing grounds of the western North Pacific
言語 en
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
著者 矢野, 寿和

× 矢野, 寿和

WEKO 276
e-Rad 40867842
ORCID 0000-0002-5866-7444

en Yano, Toshikazu

ja 矢野, 寿和


ja-Kana ヤノ, トシカズ

Search repository
服部, 努

× 服部, 努

WEKO 591
e-Rad 10371808

en Hattori, Tsutomu

ja 服部, 努
ISNI

ja-Kana ハットリ, ツトム

Search repository
成松, 庸二

× 成松, 庸二

WEKO 579
e-Rad 20371809

en Narimatsu, Yoji

ja 成松, 庸二


ja-Kana ナリマツ, ヨウジ

Search repository
永尾, 次郎

× 永尾, 次郎

WEKO 369
e-Rad 30589825

en Nagao, JIro

ja 永尾, 次郎


ja-Kana ナガオ, ジロウ

Search repository
タナカ, ショウ

× タナカ, ショウ

en Tanaka, Sho
Tokai University

ja タナカ, ショウ
東海大学

ja-Kana タナカ, ショウ

Search repository
抄録
内容記述タイプ Abstract
内容記述 The present study examined body length (precaudal length, PCL) and age at sexual maturity, as well as fecundity and maternal investment in the Pacific spiny dogfish Squalus suckleyi, a long-term commercially exploited shark in the western North Pacific, using samples caught in several fisheries and across seasons. The PCL and age at 50% sexual maturity of males were 60.6 cm and 9.4 years, respectively, and those of females were 73.1 cm and 17.8 years, respectively. The PCL and age at 50% maternity were 77.4 cm and 19.7 years, respectively. General or generalized linear models revealed that capture by different fishing method did not significantly correlate with sexual maturity and maternity rates or litter size. Other general linear models revealed an increase in offspring size with maternal size, but litter size was not affected by embryonic development. These findings indicate that the reproductive potential of Pacific spiny dogfish is relatively high throughout the whole North Pacific region because of a smaller size and earlier age at sexual maturation in both sexes. In addition, pregnant females displayed no resting phase and produced 0.45 more embryos per centimetre of PCL in their lifetime after the onset of maturity, which is higher than in the eastern North Pacific. We suggest that these qualities are not a consequence of stock decline associated with the long-term exploitation of the species, but that its high reproductive potential has likely contributed to the long-term stability of the landings in Japan.
言語 en
書誌情報 en : Journal of Fish Biology

巻 103, 号 2, p. 260-271, ページ数 12, 発行日 2023-05-11
出版者
出版者 Wiley
言語 en
ISSN
収録物識別子タイプ PISSN
収録物識別子 0022-1112
DOI
識別子タイプ DOI
関連識別子 10.1111/jfb.15430
情報源
識別子タイプ Local
関連識別子 23232005
言語 ja
関連名称 水産資源研究所 水産資源研究センター 底魚資源部
関連サイト
関連タイプ isIdenticalTo
識別子タイプ URI
関連識別子 https://onlinelibrary.wiley.com/doi/10.1111/jfb.15430
言語 en
関連名称 Wiley:Journal of Fish Biology
著者版フラグ
出版タイプ AO
出版タイプResource http://purl.org/coar/version/c_b1a7d7d4d402bcce
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