| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2024-07-16 |
| タイトル |
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タイトル |
Potential impact of predation by larval Spanish mackerel on larval anchovy in the central Seto Inland Sea, Japan |
|
言語 |
en |
| 作成者 |
Deguchi, Wataru
Fujita, Tatsunori
Yoneda, Michio
Kono, Naoaki
Yamamoto, Masayuki
Harada, Kaito
Shoji, Jun
Tomiyama, Takeshi
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| アクセス権 |
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|
アクセス権 |
embargoed access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_f1cf |
| 権利情報 |
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|
言語 |
en |
|
権利情報 |
© 2023. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| 権利情報 |
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言語 |
en |
|
権利情報 |
This is not the published version. Please cite only the published version. |
| 権利情報 |
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言語 |
ja |
|
権利情報 |
この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。 |
| 主題 |
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言語 |
en |
|
主題Scheme |
Other |
|
主題 |
top-down control |
| 主題 |
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言語 |
en |
|
主題Scheme |
Other |
|
主題 |
predator-prey interaction |
| 主題 |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
simulation model |
| 主題 |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
population dynamics |
| 内容記述 |
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内容記述 |
Japanese anchovy is used as an essential dried fish material from the larval to adult stages. In the central Seto Inland Sea, Japan, the catch of larval anchovy has markedly decreased to <3.9% of the maximum recorded in 2002 since 2013; however, the reason causing this reduction has not been well understood. The abundance of recruit fish, including larvae and early juveniles, has decreased in the last decade, despite abundant eggs, suggesting that the majority of larvae do not survive before recruitment. In contrast, the stock of Japanese Spanish mackerel, whose larvae are the major predator of larval anchovy, has increased in the Seto Inland Sea. It is hypothesized that an increase in the density of Spanish mackerel may have a top-down control on the decrease in anchovy recruitment by an increase in predation opportunities. In this study, we investigated the abundance of Spanish mackerel and anchovy larvae using a bongo net in the field in 2018 and 2019. The average densities of larvae in late May were 1.5–3.3 individuals (inds) / 100 m3 and 1,058–1,346 inds / 100 m3 for the Spanish mackerel and the anchovy, respectively; both were higher than those in 2002–2005. We constructed a Stella model, simulating the growth and survival of larval anchovy until they reached the commercial sizes by taking into account consumption by larval Spanish mackerel. The model suggested that the consumption of larval anchovy by larval Spanish mackerel accounted for <4% of the initial abundance of anchovy in 2018, which was not greater than that in 2005. In contrast, the reduction in the growth rates of larval anchovy due to reduced maternal conditions can adversely affect their survival. Thus, the results did not fully support the hypothesis mentioned above. |
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言語 |
en |
| 内容記述 |
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内容記述タイプ |
Other |
|
内容記述 |
This work was partly supported by the Fisheries Agency of Japan and Japan Fisheries Research |
|
言語 |
en |
| 出版者 |
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|
出版者 |
Elsevier |
|
言語 |
en |
| 言語 |
|
|
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 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
|
|
関連タイプ |
isVersionOf |
|
|
識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1016/j.dsr2.2023.105272 |
| 助成情報 |
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助成機関名 |
日本学術振興会 |
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言語 |
ja |
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研究課題番号URI |
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19K06207/ |
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研究課題番号 |
19K06207 |
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研究課題名 |
緯度間適応の方向性が潜在的成長速度の変異を規定するか？冷水性魚類での検証 |
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言語 |
ja |
| 助成情報 |
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|
助成機関名 |
Japan Society for the Promotion of Science |
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|
言語 |
en |
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研究課題名 |
緯度間適応の方向性が潜在的成長速度の変異を規定するか？冷水性魚類での検証 |
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言語 |
ja |
| 開始ページ |
|
|
開始ページ |
105272 |
| 書誌情報 |
en : Deep Sea Research Part II: Topical Studies in Oceanography
巻 208,
p. 105272,
発行日 2023-02-07
|
| 旧ID |
55316 |
DSRIITSO_208_105272.pdf (514.6 KB)
