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Occurrence of Predation of Juvenile Chum Salmon (Oncorhynchus keta) by Chub Mackerel (Scomber japonicus) and Spotted Mackerel (Scomber australasicus) in Miyako Bay, Iwate Prefecture, Japan
https://fra.repo.nii.ac.jp/records/2010268
https://fra.repo.nii.ac.jp/records/201026856d82378-861e-4a90-89c0-94cf3353b865
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2024-07-18 | |||||
| タイトル | ||||||
| タイトル | Occurrence of Predation of Juvenile Chum Salmon (Oncorhynchus keta) by Chub Mackerel (Scomber japonicus) and Spotted Mackerel (Scomber australasicus) in Miyako Bay, Iwate Prefecture, Japan | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Diet analysis; DNA metabarcoding; Ocean warming; Otolith | |||||
| 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 |
佐々木, 系
× 佐々木, 系× 八谷, 三和× 清水, 大輔× 小島, 大輔× 小松, 信治 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In recent years, chub mackerel (Scomber japonicus) and spotted mackerel (Scomber australasicus) have started migrating to the coastal areas off Iwate Prefecture earlier than they did previously, resulting in a geographic overlap between hatchery-bred juvenile chum salmon (Oncorhynchus keta) released at sea and the occurrence of predatory mackerel. To clarify whether the mackerels prey on the juvenile chum salmon, we captured adult mackerels by angling during the period when these species overlap in Miyako Bay, Iwate Prefecture. After capture, the stomach contents of the mackerel were examined using a combination of visual examinations and DNA metabarcoding analysis. As a result, chum salmon were identified in the stomachs of 4 of 97 chub mackerel (May 19), 5 of 30 chub mackerel, and 1 of 7 spotted mackerel (May 26), providing the first evidence of chum salmon predation by mackerels. When the fork length of chum salmon prey was inferred based on otolith measurements, the results showed that the prey items ranged in size from 54.3 mm to 86.9 mm. These findings indicate that the body-size range of the chum salmon that were targeted by mackerels spans that of hatchery-released chum salmon. | |||||
| 言語 | en | |||||
| 書誌情報 |
en : Journal of Marine Science and Technology 巻 31, 号 4, p. 529-538, ページ数 10, 発行日 2023-12-15 |
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| 出版者 | ||||||
| 出版者 | National Taiwan Ocean University | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | 国立台湾海洋大学 | |||||
| 言語 | ja | |||||
| ISSN | ||||||
| 収録物識別子タイプ | EISSN | |||||
| 収録物識別子 | 2709-6998 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 1023-2796 | |||||
| DOI | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.51400/2709-6998.2722 | |||||
| 情報源 | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | Local | |||||
| 関連識別子 | 23342242 | |||||
| 言語 | ja | |||||
| 関連名称 | 水産技術研究所 環境・応用部門 沿岸生態システム部 | |||||
| 関連サイト | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://jmstt.ntou.edu.tw/journal/vol31/iss4/15/ | |||||
| 言語 | en | |||||
| 関連名称 | National Taiwan Ocean University | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
