Author(s):
Dias, Marta ; Marmelo, Isa ; António, Carla ; Rodrigues, Ana M. ; Marques, António ; Diniz, Mário S. ; Maulvault, Ana Luísa
Date: 2025
Persistent ID: http://hdl.handle.net/10362/187508
Origin: Repositório Institucional da UNL
Project/scholarship:
info:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FCTA-AMB%2F0592%2F2021/PT;
info:eu-repo/grantAgreement/FCT/Concurso de avaliação no âmbito do Programa Plurianual de Financiamento de Unidades de I&D (2017%2F2018) - Financiamento Base/UIDB%2F04378%2F2020/PT;
info:eu-repo/grantAgreement/FCT/Concurso para Atribuição do Estatuto e Financiamento de Laboratórios Associados (LA)/LA%2FP%2F0140%2F2020/PT;
info:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FCTA-AMB%2F0592%2F2021/PT;
info:eu-repo/grantAgreement/FCT//2020.04413.BD/PT;
Subject(s): climate change; functional feeds; GC-TOF-MS; primary metabolome; red macroalga; suboptimal rearing conditions; white seabream; Ecology, Evolution, Behavior and Systematics; Aquatic Science; Ecology; SDG 2 - Zero Hunger; SDG 13 - Climate Action; SDG 14 - Life Below Water
Description
Copyright: © 2025 by the authors. Licensee MDPI, Basel, Switzerland
The need to maximize aquaculture production while addressing environmental and food security challenges posed by climate change has driven research towards the development of functional aquafeeds that enhance performance and immunity in farmed species. However, exposure to dietary and environmental stressors affects marine organisms, altering key metabolic pathways best understood through high-throughput “omics” tools. This study assessed the effects of Asparagopsis taxiformis supplementation on central metabolic pathways by analyzing changes in primary metabolite levels in the liver of farmed Diplodus sargus under optimal and suboptimal temperature conditions. Results showed that seaweed supplementation had a beneficial effect on the fish’s primary metabolome; however, inclusion levels and rearing conditions played a crucial role in determining outcomes. While 1.5% supplementation maintained a balanced primary metabolome under optimal temperature conditions, 3.0% supplementation most effectively mitigated the adverse effects of acute thermal stress during a marine heatwave. These findings highlight the nutritive and functional potential of A. taxiformis supplementation in aquafeeds for marine omnivorous fish species and emphasize the importance of evaluating functional aquafeeds under suboptimal rearing conditions. Overall, our results demonstrate the value of metabolomics in elucidating the molecular basis underlying biological pathways in farmed marine fish and optimizing production through climate-smart dietary strategies.
