Exploring the thermal adaptability of silver pompano Trachinotus blochii: An initiative to assist climate change adaptation and mitigation to augment aquaculture productivity

Divu, D and Mojjada, Suresh Kumar and Abdul Azeez, P and Anil, M K and Ambarish, Gop P and Swathi Lekshmi, P S and Mahalingam, S and Muktha, M and Ratheesh Kumar, R and Mojjada, Ramesh Kumar and Tade, Mayur Shivdas and Shree, Jai and Subramanian, Aarsha and Suresh, V V R and Gopalakrishnan, A (2024) Exploring the thermal adaptability of silver pompano Trachinotus blochii: An initiative to assist climate change adaptation and mitigation to augment aquaculture productivity. Ecological Informatics, 82. pp. 1-13. ISSN 1878-0512

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Abstract

Temperature is one of the crucial environmental factors affecting the physiology and suitability of fish species for aquaculture, making it vital to predict how the present rate of climate change will impact these species. To assess the heat tolerance of silver pompano Trachinotus blochii, the Critical Thermal Maxima (CTmax) and Critical Thermal Minima (CTmin) were investigated at six different acclimation temperatures (Tacc), ranging from 18 to 36 °C. Generalized Additive Model (GAM) was performed on CTmax and CTmin and tested for data validation. The results revealed that the CTmax and CTmin for T. blochii were 41.1 ± 0.0478 °C and 12.0 ± 0.0748 °C, respectively. The Thermal Tolerance Polygon was calculated to be 357.02 oC2 for the specified temperatures. The study revealed that silver pompano acclimated to higher temperatures exhibited greater thermal tolerance. Additionally, it was found that their thermal tolerance could be increased through an acclimation regime, allowing them to adapt better to higher temperatures. The results enlighten the species potential towards securing global food security and sustainable development, as these resilient finfish can be integrated into climate-smart marine aquaculture systems to mitigate the effects of climate change by providing valuable information for future actionable strategies for species diversification.

Item Type:	Article
Uncontrolled Keywords:	Climate change; Thermal tolerance; Acclimation temperature; Climate smart marine aquaculture; Food security
Subjects:	Marine Environment > Climate change Aquaculture Aquaculture > Mariculture Demersal Fishes > Carangids
Divisions:	CMFRI-Kochi > Mariculture Division Subject Area > CMFRI > CMFRI-Kochi > Mariculture Division CMFRI-Kochi > Mariculture Division Subject Area > CMFRI-Kochi > Mariculture Division CMFRI-Kochi > Marine Biodiversity, Environment and Management Division Subject Area > CMFRI > CMFRI-Kochi > Marine Biodiversity, Environment and Management Division CMFRI-Kochi > Marine Biodiversity, Environment and Management Division Subject Area > CMFRI-Kochi > Marine Biodiversity, Environment and Management Division CMFRI-Madras (Chennai) CMFRI-Veraval CMFRI-Visakhapatnam CMFRI-Vizhinjam
Depositing User:	Arun Surendran
Date Deposited:	11 Aug 2024 02:56
Last Modified:	12 Aug 2024 03:44
URI:	http://eprints.cmfri.org.in/id/eprint/18758

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