Growth performance, flesh fatty acid profile and transcriptome analyses of hybrid Jinhu grouper (Epinephelus fuscoguttatus ♀ × Epinephelus tukula ♂) cultured in Deeper-Offshore Aquaculture System

IF 3.2 2区农林科学 Q1 FISHERIES

Aquaculture Reports Pub Date : 2025-04-14 DOI:10.1016/j.aqrep.2025.102794

Ziyi Wu , Wenjie Lai , Qinxi Dai , Zhenjiang Zou , Yuyou Lu , Jiachang Xu , Yakang Song , Jingpeng Hou , Haoran Lin , Yong Zhang , Jin Zhang , Danqi Lu

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引用次数: 0

Abstract

Amid the rapid growth of offshore aquaculture in China, a Deeper Offshore Aquaculture System (DOAS) for hybrid Jinhu groupers (Epinephelus fuscoguttatus♀× Epinephelus tukula♂) has been established in Guangdong. This study aims to elucidate the biological and metabolic differences between Jinhu groupers cultured in Recirculating Aquaculture Systems (RAS) and those in DOAS. A three-month growth comparison experiment was conducted to assess the developmental differences of Jinhu groupers. This research reveals significant variations in growth performance and flesh fatty acid composition between fish from these two systems, particularly in the content of eicosapentaenoic acid and nine other fatty acids. Through transcriptome analysis of liver and muscle tissues, 278 and 186 differentially expressed genes were identified, respectively, highlighting notable metabolic shifts. Key pathways affected include lipid metabolism and muscle fiber growth. These insights deepen the understanding of the acclimation mechanisms of Jinhu groupers to diverse aquaculture settings and offer valuable strategies for optimizing deeper offshore aquaculture practices, enhancing the sustainability and efficiency of the industry.

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深近海养殖杂交金湖石斑鱼（Epinephelus fuscoguttatus ♀ × Epinephelus tukula ♂）的生长性能、肉质脂肪酸谱和转录组分析

在中国近海水产养殖快速发展的背景下，广东建立了杂交金湖石斑鱼（Epinephelus fuscoguttatus♀× Epinephelus tukula♂）的深海养殖系统（DOAS）。本研究旨在探讨循环水养殖系统（RAS）与DOAS养殖系统中金湖石斑鱼的生物学和代谢差异。以金湖石斑鱼为研究对象，进行了为期3个月的生长对比试验。这项研究揭示了这两种体系的鱼在生长性能和肉脂肪酸组成方面的显著差异，特别是在二十碳五烯酸和其他九种脂肪酸的含量方面。通过对肝脏和肌肉组织的转录组分析，分别鉴定出278和186个差异表达基因，突出了显著的代谢变化。受影响的关键途径包括脂质代谢和肌纤维生长。这些见解加深了对金湖石斑鱼对不同养殖环境的适应机制的理解，并为优化更深层次的近海养殖实践，提高行业的可持续性和效率提供了有价值的策略。

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来源期刊

Aquaculture Reports Agricultural and Biological Sciences-Animal Science and Zoology

CiteScore

5.90

自引率

8.10%

发文量

469

审稿时长

77 days

期刊介绍： Aquaculture Reports will publish original research papers and reviews documenting outstanding science with a regional context and focus, answering the need for high quality information on novel species, systems and regions in emerging areas of aquaculture research and development, such as integrated multi-trophic aquaculture, urban aquaculture, ornamental, unfed aquaculture, offshore aquaculture and others. Papers having industry research as priority and encompassing product development research or current industry practice are encouraged.