| Item type |
デフォルト(1) |
| 公開日 |
2026-01-28 |
| タイトル |
|
|
タイトル |
Temperature-induced Effects on Ecdysis Frequency, Feeding, and Growth Response of Gazami (Portunus trituberculatus) Crablets |
|
言語 |
en |
| 作成者 |
Macario, Angelo C.
Islam, Tania
de la Paz, Manuel Eduardo L.
Balsomo, Alexander J.
Tomiyama, Takeshi
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
© 2025 The Author(s). Aquaculture, Fish and Fisheries published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
ecdysis |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
growth response |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
hatchery |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
management |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Portunus trituberculatus |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
stock enhancement |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
temperature |
| 内容記述 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Gazami (Portunus trituberculatus) is a key species in stock enhancement programs in Japan. Recently, a severe decline in the Western Japan population has been observed, emphasizing the need for improvements in these programs. This study aimed to evaluate the effects of temperature on Gazami crablets under hatchery conditions, focusing on ecdysis frequency, inter-ecdysis period (IEP), feeding behaviour and growth responses, to provide additional insights prior to their release into fishing grounds. Controlled rearing experiments were conducted in June 2023 and June 2024, under various temperature regimes. Crablets were reared in 100-L tanks at 18°C, 22°C, 26°C, 30°C and 34°C, with a control group maintained at ambient temperatures (average: 19.79 ± 0.63°C in 2023 and 21.50 ± 0.73°C in 2024). Salinity was kept at approximately 33 ppt across all setups. The 26°C and 30°C treatments significantly improved growth performance compared to ambient and lower-temperature treatments. The shortest IEP was observed at 30°C, positively influencing crablet rearing. However, at 34°C, ecdysis frequency significantly decreased, leading to slower growth and reduced food intake. These findings suggest that 30°C is optimal for enhancing ecdysis, feeding and growth in hatchery-reared crablets. However, disparities between laboratory conditions and natural temperature variations should be considered when releasing juveniles into the wild. Understanding temperature's effects on Gazami crablets can help refine conservation and management strategies to support population recovery. |
|
言語 |
en |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
This study was partly supported by the Environment Research and Tech-nology Development Fund (JPMEERF24S12313) of the Environmental Restoration and Conservation Agency, Ministry of the Environment,Japan |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Wiley |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 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 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
|
|
関連タイプ |
isVersionOf |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1002/aff2.70141 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
2693-8847 |
| 書誌情報 |
en : Aquaculture, Fish and Fisheries
巻 5,
号 6,
p. 70141,
ページ数 12,
発行日 2025-11-09
|
AquacultureFishandFisheries_5_6_70141.pdf (772 KB)
