Iskandar, Nur Syuhada, Noor, Noorashikin Md, Cob, Zaidi Che, Das, Simon Kumar, and Abdullah, Mohamad Amir Aiman (2025) Climate-driven physiological changes in Mahseer (Tor tambroides) juveniles. Scientific Reports, 15. 28190.

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Abstract

Climate change, characterized by rising atmospheric carbon dioxide (CO2) levels and increasing global temperatures, poses significant threats to aquatic ecosystems. This study examines the impact of elevated CO2 concentrations and water temperature on the growth, survival, and hematological condition of mahseer juveniles. A controlled experiment was conducted to analyze growth parameters, including specific growth rate (SGR), relative growth rate (RGR), feed conversion ratio (FCR), and hematological indices across varying CO2 and temperature conditions. The findings indicate that CO2 levels significantly influence fish weight, with higher concentrations promoting growth up to a threshold. Elevated temperature negatively affects fish weight gain, particularly at extreme levels. Hematological responses suggest that prolonged exposure to high CO2 and temperature alters blood parameters, indicating physiological stress. The interaction between CO2 and temperature suggests that optimal growth occurs at high CO2 and moderate temperatures, whereas excessive warming exacerbates metabolic stress and mortality. These results provide essential insights for sustainable aquaculture practices and conservation strategies in the face of climate change. The significance of these findings extends to aquaculture industries aiming to optimize fish production under changing environmental conditions.

Item ID:	86481
Item Type:	Article (Research - C1)
ISSN:	2045-2322
Copyright Information:	© The Author(s) 2025. Open Access This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, which permits any non-commercial use, sharing, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if you modified the licensed material. You do not have permission under this licence to share adapted material derived from this article or parts of it. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by-nc-nd/4.0/.
Date Deposited:	04 Aug 2025 23:36
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