| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-10-07 |
| タイトル |
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|
タイトル |
Potential application of otolith Sr:Ca ratios as indicators of brown-algae feeding histories in herbivorous fishes |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Dietary habit |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Herbivorous fish |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Kelp forests |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Macroalgae |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Otolith Sr:Ca |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Seaweed beds |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Strontium |
| 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 |
| 著者 |
Ogino, Yoshimi
Furumitsu, Keisuke
Kiriyama, Takanari
Yamaguchi, Atsuko
|
| 抄録 |
|
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内容記述タイプ |
Abstract |
|
内容記述 |
Brown algae (Phaeophyceae) are the largest and most ecologically important group of marine algae, serving as habitat-forming organisms shaping coastal ecosystems. Understanding the feeding pressure exerted by herbivorous fishes on brown algae is essential for elucidating the dynamics of both coral reefs and algal forests. This study focused on the unique ability of brown algae to accumulate strontium (Sr) and tested the hypothesis that frequent consumption of brown algae elevates otolith Sr:calcium (Ca) ratios in herbivorous fishes. We analysed stomach contents and otolith Sr:Ca ratios in four sympatric species collected in southwestern Japan. Among three Kyphosus species, higher Sr:Ca ratios were associated with the frequency of brown-algae consumption. Notably, K. bigibbus, a brown-algae specialist, exhibited an exceptionally high otolith Sr:Ca ratio (0.12), far exceeding the common range of marine fishes (0.004–0.02). In K. vaigiensis, Sr:Ca ratios were high in areas where brown algae were frequently consumed, whereas they were moderate in areas where red algae were predominantly consumed. In K. cinerascens, only the latter pattern was observed. Both patterns are consistent with our hypothesis. Furthermore, the results suggest that K. bigibbus begin feeding on brown algae at approximately 1 year of age. By contrast, Siganus fuscescens exhibited Sr:Ca ratios within the common range, despite frequent feeding on brown algae, deviating from this hypothesis. Therefore, otolith Sr:Ca ratios may serve as a species-specific proxy for reconstructing feeding histories on brown algae, providing a novel tool for investigating herbivory over several decades in long-lived species. |
|
言語 |
en |
| 書誌情報 |
en : Journal of Sea Research
巻 208,
p. art. no. 102633,
発行日 2025-09-30
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| 出版者 |
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出版者 |
Elsevier B.V. |
|
言語 |
en |
| ISSN |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
13851101 |
| DOI |
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|
関連タイプ |
isIdenticalTo |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1016/j.seares.2025.102633 |
| 権利 |
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|
権利情報 |
© 2025 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
|
言語 |
en |
| 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 |
| 引用 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Journal of Sea Research, 208, art. no. 102633; 2025 |
|
言語 |
en |
JOSR208_102633.pdf (3.2 MB)
