| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2024-10-02 |
| タイトル |
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タイトル |
日本周辺海域におけるブリの回遊と海洋環境の関係解明に基づく来遊量予測手法の開発 |
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言語 |
ja |
| タイトル |
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タイトル |
Elucidation of the Relationship between Migration Pattern and Sea Environment, and Prediction Method of Relative Abundance for Yellowtail in the Japanese Waters. |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
岸田, 達
木下, 貴裕
前田, 英章
渡辺, 健
井野, 慎吾
奥野, 充一
井関, 智明
吉田, 一範
阪地, 英男
久野, 正博
梶, 達也
青野, 怜史
福田, 博文
田, 永軍
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
1- ⑴ -1） Experiment of release and recapture using archival tag revealed that the area of migration of 0 and 1 year old yellowtail in the Sea of Japan is restricted small scale. 0 and 1 year old fish in western waters than Noto Peninsula stayed near release points all of the year. 0 and 1 year old fish in northern waters than Noto Peninsula, northern area of the Sea of Japan stayed among Noto Peninsula （Wajima） and off Aomori Prifecture. They did not move to west of Noto Peninsula even in winter, differ from in 1980s when ocean regime was cold. 1-⑴-2） Young yellowtail occurred in northern waters than Noto Peninsula even when the water temperature showed the minimum （March and April）. The ambient water temperature exceed 10℃ at that time according to the analysis of water temperature record obtained from archival tag record. So, it is supposed that young yellowtail can pass winter where waters exceed 10℃ in Japan Sea. It is also supposed that yearly change of water temperature in winter （when water temperature is the minimum, i.e. March and April） may cause the change of migration pattern of young yellowtail in this area. 1- ⑵ It is estimated by synthesis of the past and present study that young yellowtail （0 to 2 years old） in the Sea of Japan form small scale migration group and the group west of Noto Peninsula and that northern part of Noto Peninsula do not exchange until their maturation age, 3 year old under present environment. Catch number between at age 0 and at age 3 of the same year-class in each area show high correlation. It is suggested that the forecast of fishery of yellowtail may possible, if catch number of 0 year old fish in each migration group will be used as one of the index as strength of the year-class. 1-⑶ Rearing experiment of pre-larval yellowtail at different water temperature revealed that growth of otholis is faster as water temperature is higher. Comparing this relationship and otholis of larval, juvenile and young yellowtail sampled in the East China Sea and the Sea of Japan, the possibility that spawning ground and period may shift from south of East China Sea in February to western waters of the Sea of Japan in June pointed out. recent environment, and may not return to Tohoku region coast again even in summer. It seems that exchange among those migration groups or between migration group and resident group may occur at some probability. 3- ⑴ Long term fluctuation of yellowtail catch is largely influenced by long term fluctuation of water temperature. It seems that increase of water temperature have a good effect on migration of yellowtail to fishing ground. SST mapping in winter （March） shows that area where yellowtail can pass the winter （waters exceed 10℃） enlarged to northward than Noto Peninsula and Boso Peninsula in 1990s when warm regime had began. 3- ⑵ Considering the facts that almost relationships between abundance indices of each age showed positive correlation and therefore the dependence of each age abundance on the abundance of 0 year old fish of the same year class is suggested, and that abundance of each age and water temperature usually showed positive correlation in each area, forecasting model of yellowtail abundance is examined using abundance of 0 year old fish in each area and water temperature as explanation variables. Abundance indices of fish over 2 years old in western waters and northern waters of the Sea of Japan, W_AI_2 and N_AI_2 got high decision coefficient if they are described as follows; W_AI_2 = 0.502W_AI_0 + 0.232W_AI_1 + 0.377N_AI_2+ 0.131WT_winW － 3.111 N_AI_2 = 0.607W_AI_0 + 0.128N_AI_1 + 0.311WT_winW － 0.3697 Where W_AI_t, N_AI_t denote abundance index of t year old fish in western and northern waters, and WT_winW means water temperature of 50m depth in western waters of the Sea of Japan in winter of the year when the year class was 0 year old. |
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言語 |
en |
| 書誌情報 |
ja : 水産総合研究センター研究報告
en : Bulletin of Fisheries Research Agency
巻 30,
p. 1-104,
ページ数 104,
発行日 2010-06
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| 出版者 |
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出版者 |
水産総合研究センター |
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言語 |
ja |
| ISSN |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
1346-9894 |
| 書誌レコードID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA11589591 |
| 情報源 |
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識別子タイプ |
Local |
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関連識別子 |
fra_k_30_1 |
| 関連サイト |
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識別子タイプ |
URI |
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関連識別子 |
https://agriknowledge.affrc.go.jp/RN/2010792524 |
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関連名称 |
日本農学文献記事索引（AgriKnowledge） |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
fra_k_30_1.pdf (16.1 MB)
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