Effects of dietary long-chain polyunsaturated fatty acids on osmoregulation and salinity adaptation in red tilapia (Oreochromis mossambicus♀ × O. niloticus♂) under salinity stress.

Jiaying Xie, Junjun Sun, Yuanyou Li, Shuqi Wang, Douglas R Tocher, Cuihong You, Zhenqiang An, Dizhi Xie, Cuiying Chen

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Article in Fish physiology and biochemistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

9 authors.

Jiaying Xie *Guangdong Provincial Key Laboratory of Marine Biotechnology & Marine Biology, Institute of Shantou University, Shantou, 515063, Guangdong, China.

Junjun Sun *Guangdong Provincial Key Laboratory of Marine Biotechnology & Marine Biology, Institute of Shantou University, Shantou, 515063, Guangdong, China.

Yuanyou LiSchool of Marine Sciences of South China, Agricultural University & Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China.

Shuqi WangGuangdong Provincial Key Laboratory of Marine Biotechnology & Marine Biology, Institute of Shantou University, Shantou, 515063, Guangdong, China.

Douglas R TocherGuangdong Provincial Key Laboratory of Marine Biotechnology & Marine Biology, Institute of Shantou University, Shantou, 515063, Guangdong, China.

Cuihong YouGuangdong Provincial Water Environment and Aquatic Products Security Engineering Technology Research Center, Zhongkai University of Agriculture and Engineering, Guangzhou, China.

Zhenqiang AnGuangdong Provincial Key Laboratory of Marine Biotechnology & Marine Biology, Institute of Shantou University, Shantou, 515063, Guangdong, China.

Dizhi XieSchool of Marine Sciences of South China, Agricultural University & Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China.

Cuiying ChenGuangdong Provincial Key Laboratory of Marine Biotechnology & Marine Biology, Institute of Shantou University, Shantou, 515063, Guangdong, China. cychen@stu.edu.cn.

Funding

Department of Education of Guangdong Province 018KCXTD012Guangdong Provincial Key Areas R&D Program 2021B0202050001National Natural Science Foundation of China-Guangdong Joint Fund 31972806National Natural Science Foundation of China-Guangdong Joint Fund 32473178Special Fund Project of Science and Technology Application in Guangdong Province STKJ202209037

6 · The paper itself

Abstract

The roles of long-chain polyunsaturated fatty acids (LC-PUFA) in osmoregulation and salinity adaptation in teleost fish were investigated in red tilapia (Oreochromis mossambicus♀ × O. niloticus♂). Groups of juvenile fish were reared initially in freshwater (FW, 0 ppt) or seawater (SW, 32 ppt) and fed diets containing either LC-PUFA-rich fish oil (FO) or rapeseed oil (VO) that lacks LC-PUFA, but is rich in C18 PUFA. After 8 weeks of feeding, the four groups of fish were subjected to salinity stress by directly changing to brackish water (BW, 16 ppt). Fish were sampled after 0 h, 3 h, 6 h, 1 d, 4 d, 8 d, and 16 d, and plasma osmoregulation-related parameters and tissue fatty acid compositions were analyzed. In red tilapia switched from SW to BW, plasma osmolality initially decreased significantly (0 - 1 d) and then increased (4 - 16 d) in fish fed the VO diet, while there were no significant changes in fish fed the FO diet. Plasma osmolality increased significantly in tilapia fed both diets when subjected to high salinity stress (FW to BW). Both the plasma Na

Indexed as

Adaptation, PhysiologicalFatty Acids, UnsaturatedOsmoregulationSalt StressTilapiaAnimal FeedAnimalsDietFemaleMaleSalinityFatty Acids, UnsaturatedLC-PUFANKAOsmoregulationRed tilapiaSalinity stress

Identifiers

PMID40767892

DOI10.1007/s10695-025-01554-3

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.