WEKO3
アイテム
Advantages of small-sized macroalgae in seaweed bed restoration in Kyushu, western Japan
https://doi.org/10.57348/0002016041
https://doi.org/10.57348/00020160417c3b4454-985c-494a-bf2d-375183932957
| 名前 / ファイル | ライセンス | アクション |
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fra_k_53_133.pdf (355.9 KB)
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| アイテムタイプ | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||||||||||||||||||||
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| 公開日 | 2026-04-02 | |||||||||||||||||||||||||||||
| タイトル | ||||||||||||||||||||||||||||||
| タイトル | Advantages of small-sized macroalgae in seaweed bed restoration in Kyushu, western Japan | |||||||||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||||||||||
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| 言語 | eng | |||||||||||||||||||||||||||||
| キーワード | ||||||||||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||||||||||||||
| 主題 | herbivorous fish; Heliocidaris crassispina; isoyake; Kyushu | |||||||||||||||||||||||||||||
| 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 | departmental bulletin paper | |||||||||||||||||||||||||||||
| ID登録 | ||||||||||||||||||||||||||||||
| ID登録 | 10.57348/0002016041 | |||||||||||||||||||||||||||||
| ID登録タイプ | JaLC | |||||||||||||||||||||||||||||
| 著者 |
門田, 立
× 門田, 立
WEKO
394
× 山田, 秀秋
WEKO
658
× 邵, 花梅
WEKO
990
× 野田, 勉
WEKO
859
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| 抄録 | ||||||||||||||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||||||||||||||
| 内容記述 | Seaweed beds composed of large-sized macroalgae (i.e., Sargassum spp. and Ecklonia spp.) have been declining along the coast of western Japan, especially in Kyushu. Excessive feeding by herbivorous fish is likely responsible for the loss of macroalgal beds, but we have not yet developed effective techniques to remove these fish. Recent research started in Kyushu have focused on the advantages and roles of small-sized macroalgae in the restoration of seaweed beds because small-sized macroalgae may be less vulnerable to herbivory than large-sized macroalgae and may have value as food and habitat for fishery benthos such as purple sea urchin (Heliocidaris crassispina). This study discusses the results of recent research on the benefits of small-sized macroalgae in seaweed bed restoration in Kyushu and highlights: (1) the low vulnerability of small-sized macroalgae to feeding by herbivorous fish, (2) the functionality of small-sized macroalgae as food for H. crassispina, and (3) the results of field restoration trials of small-sized macroalgae in sites with high feeding pressure from herbivorous fish. (1) The vulnerability of small-sized macroalgae to feeding by brown chub (Kyphosus bigibbus), Japanese parrotfish (Calotomus japonicus), and mottled spinefoot (Siganus fuscescens) were examined in tank experiments. Smallsized macroalgae were found to be less vulnerable than large-sized macroalgae to feeding by all fish species examined. Additionally, vulnerability to feeding was found to vary among species of small-sized macroalgae; red algae such as Gelidium elegans and Dichotomaria falcata tended to be the least susceptible. (2) Tank experiments also revealed that various small-sized macroalgae were useful as food for H. crassispina, although the gonad index values (GI) of the sea urchin fed any of the small-sized macroalgae were lower than that fed large-sized macroalgae. In addition, GI of the sea urchin fed red algae (G. elegans or Palisada intermedia) was higher than those fed the other species of small-sized macroalgae. (3) Attempts to restore small-sized macroalgae were conducted at two sites (Nagasaki and Kagoshima) in Kyushu and succeeded in increasing small-sized macroalgae such as Gelidiales and Rhodomelaceae by removing sea urchins. However, large-sized macroalgae such as Sargassum spp. did not increase at either site. Furthermore, GI of H. crassispina which left unremoved or moved to the removal area increased in the restored seaweed bed at Kagoshima. These studies suggest that various small-sized macroalgae have lower susceptibility to consumption by herbivorous fish and serve as food resources for H. crassispina. Therefore, the use of small-sized macroalgal species could be an effective means of seaweed bed restoration, thereby increasing fishery resources such as H. crassispina in waters with high feeding pressure from herbivorous fish. | |||||||||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||||||||||
| 書誌情報 |
ja : 水産研究・教育機構研究報告 en : Bulletin of Japan Fisheries Research and Education Agency 巻 53, p. 133-139, ページ数 7, 発行日 2026-03-25 |
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| 出版者 | 水産研究・教育機構 | |||||||||||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||||||||||
| 出版者 | ||||||||||||||||||||||||||||||
| 出版者 | Japan Fisheries Research and Education Agency | |||||||||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||||||||||
| ISSN | ||||||||||||||||||||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||||||||||||||||||||
| 収録物識別子 | 2758-3953 | |||||||||||||||||||||||||||||
| 書誌レコードID | ||||||||||||||||||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||||||||||||||||||
| 収録物識別子 | AA12767505 | |||||||||||||||||||||||||||||
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| 識別子タイプ | Local | |||||||||||||||||||||||||||||
| 関連識別子 | fra_k_53_133 | |||||||||||||||||||||||||||||
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| 出版タイプ | VoR | |||||||||||||||||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||||||||||||||||
