Antioxidant response of ridgetail white prawn Exopalaemon carinicauda to harmful dinoflagellate Prorocentrum minimum exposure and its histological change

文献类型： 外文期刊

第一作者： Mu, Cuimin

作者： Mu, Cuimin;Ren, Xianyun;Ge, Qianqian;Wang, Jiajia;Li, Jian;Mu, Cuimin;Ren, Xianyun;Li, Jian

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关键词： Prorocentrum minimum; Exopalaemon carinicauda; antioxidant response; histological changes

期刊名称：JOURNAL OF OCEAN UNIVERSITY OF CHINA （ 影响因子：0.913； 五年影响因子：1.012 ）

ISSN： 1672-5182

年卷期： 2017 年 16 卷 2 期

页码：

收录情况： SCI

摘要： The dinoflagellate Prorocentrum minimum, one of the most widespread red tide causing species, affects marine aquaculture and ecosystems worldwide. In this study, ridgetail white prawn Exopalaemon carinicauda were exposed to P. minimum cells (5 x 10(4) cells mL(-1)) to investigate its harmful effects on the shrimp. Antioxidant activities and histological changes were used as indicators of health status of the shrimp. In 72 hours, the mortality of E. carinicauda was not affected, but its antioxidant response and histology were statistically different from those of control. Elevated superoxide dismutase (SOD) and glutathione peroxidase (GPX) activities and depressed catalase (CAT) activity were observed in gill; while increased SOD, glutathione S-transferase (GST), CAT activities and modulated GPX activity were observed in hepatopancreas. Thus, antioxidant activities in gill and hepatopancreas seem to respond differentially to harmful alga exposure. Increased malondialdehyde (MDA) content in early a few hours indicates the damage of the antioxidant defense system. Although MDA content recovered to a low level thereafter, a series of histological abnormalities including accumulation or infiltration of hemocytes, tissue lesions and necrosis were discovered in gill and hepatopancreas. Exposure to P. minimum induced sublethal effects on E. carinicauda, including temporary oxidative damage and histological injury.

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