Affiliation:
1. Guangdong Technology Research Center for Marine Algal Bioengineering, Guangdong Key Laboratory of Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
2. Shenzhen Key Laboratory of Marine Biological Resources and Ecology Environment, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China
3. Longhua Innovation Institute for Biotechnology, Shenzhen University, Shenzhen 518060, China
Abstract
Aquaculture has become the fastest growing sector in global agriculture. The environmental degradation, diseases, and high density of mariculture has made for an inevitable shift in mariculture production from coastal to deep-sea areas. The influence that traditional coastal and emerging deep-sea farming environments exert on aquatic growth, immunity and gut microbial flora is unclear. To address this question, we compared the growth performance, physiological indicators and intestinal microbiological differences of deep-sea and coastal aquaculture in the Guangxi Beibu Gulf of China. The results showed that the growth performance and the complement of C3 and C4 (C3, C4), superoxide dismutase (SOD), and lysozyme (LYS), these physiological and biochemical indicators in the liver, kidney, and muscle of Trachinotus ovatus (T. ovatus), showed significant differences under different rearing conditions. Metagenome sequencing analysis showed Ascomycota, Pseudomonadota, and Bacillota were the three dominant phyla, accounting for 52.98/53.32 (coastal/deep sea), 24.30/22.13, and 10.39/11.82%, respectively. Aligned against the CARD database, a total of 23/2 (coastal/deep-sea) antibiotic resistance genes were screened and grouped into 4/2 genotypes. It indicated that compared with deep-sea fish, higher biological oxygen levels (3.10 times), inorganic nitrogen (110.00 times) and labile phosphate levels (29.00 times) in coastal waters might contributed to the existence of eutrophication with antibiotic resistance. The results of the study can provide complementary data on the study of the difference between deep-sea farming and traditional coastal farming, serving as a reference to future in-depth work on the transformation of fisheries development and scientific standardization of deep-sea farming.
Funder
2021 Shenzhen Special Fund for Agricultural Development (Fishery) Project
Shenzhen Sustainable Development Science and Technology Project
Shenzhen Sustainable Development Science and Technology Project and Shenzhen sustainable development project
Subject
General Veterinary,Animal Science and Zoology
Reference81 articles.
1. Madin, E.M. (2011). Genetically Engineered Salmon Pose Environmental Risks That Must Be Considered. Bioscience, 61.
2. Environmental Threats and Environmental Future of Estuaries;Kennish;Environ. Conserv.,2002
3. Lovatelli, A., Aguilar-Manjarrez, J., and Soto, D. (2013). Expanding Mariculture Farther Coastal: Technical, Environmental, Spatial and Governance Challenges, FAO.
4. Macromineral and Heavy Metal Profiles of Selected Deep-Sea Fish from the Kochi Coast of the Arabian Sea, India;Ajeeshkumar;Mar. Pollut. Bull.,2021
5. Growth Performance and Condition of Oysters (Crassostrea Gigas and Ostrea Edulis) Farmed in an coastal Environment (North Sea, Germany);Pogoda;Aquaculture,2011