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Effects of acute ammonia nitrogen exposure on metabolic and immunological responses in the Hong Kong oyster Crassostrea hongkongensis

文献类型： 外文期刊

作者： Lu, Jie 1 ; Yao, Tuo 1 ; Shi, Shaokun 2 ; Ye, Lingtong 3 ;

作者机构： 1.South China Sea Fisheries Res Inst, Chinese Acad Fishery Sci, Key Lab South China Sea Fishery Resources Exploita, Minist Agr & Rural Affairs, Guangzhou, Peoples R China

2.Shenzhen Fisheries Dev Res Ctr, Shenzhen, Peoples R China

3.South China Sea Fisheries Res Inst, Chinese Acad Fishery Sci, Key Lab Aquat Prod Proc, Minist Agr & Rural Affairs, Guangzhou, Peoples R China

关键词： Metabolomics; Cellular immunity; Crassostrea hongkongensis; Ammonia nitrogen; Hemocyte; Gill

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：7.129； 五年影响因子：7.284 ）

ISSN： 0147-6513

年卷期： 2022 年 237 卷

页码：

收录情况： SCI

摘要： Ammonia nitrogen, a major oxygen-consuming pollutant in the environment, can adversely affect aquatic organisms such as fish, bivalves, and crustaceans. We investigated the toxic effects of ammonia nitrogen on the Hong Kong oyster, Crassostrea hongkongensis, using flow cytometry and 1H nuclear magnetic resonance metabolomics. Exposure to ammonia nitrogen caused time- and concentration-dependent alterations in various immune parameters in hemocytes and impaired the metabolic profiles of the gills. We observed changes in the rate of apoptosis, esterase activity, lysosomal mass, hemocyte counts, phagocytic activity, and mitochondrial mass. Exposure affected metabolic pathways involved in energy metabolism, osmotic balance, and oxidative stress. We concluded that ammonia nitrogen induces metabolic and hematological dysfunction in C. hongkongensis, and our findings provide insights into the biochemical defense strategies of bivalves exposed to acute high-concentration ammonia nitrogen.

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