文献类型：期刊文献

英文题名：Gonadal antioxidant responses to seawater acidification and hypoxia in the marine mussel Mytilus coruscus

作者：Xu, Guangen[1,2];Kong, Hui[1,2];Chang, Xueqing[1,2];Dupont, Sam[3];Chen, Hui[4];Deng, Yuewen[5];Hu, Menghong[1,2];Wang, Youji[1,2]

机构：[1]Shanghai Ocean Univ, Int Res Ctr Marine Biosci, Minist Sci & Technol, Shanghai, Peoples R China;[2]Shanghai Ocean Univ, Key Lab Explorat & Utilizat Aquat Genet Resources, Minist Educ, Shanghai, Peoples R China;[3]Univ Gothenburg, Dept Biol & Environm Sci, Kristineberg Marine Res Stn, Fiskebackskil, Sweden;[4]Shanghai Ocean Univ, Coll Marine Sci, Shanghai Engn Res Ctr Hadal Sci & Technol, Shanghai 201306, Peoples R China;[5]Guangdong Ocean Univ, Fisheries Coll, Zhanjiang 524088, Peoples R China

年份：2021

卷号：28

期号：38

起止页码：53847

外文期刊名：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

收录：SCI-EXPANDED(收录号：WOS:000654150700001)、、EI(收录号：20220209911)、Scopus(收录号：2-s2.0-85106432626)、WOS

基金：This research was supported by funding from the research Grant (31872587) from the Natural Science Foundation of China and the Guangdong South China Sea Key Laboratory of Aquaculture for Aquatic Economic Animals, Guangdong Ocean University (KFKT2019ZD04). This work was also supported by the Open Fund of Guangxi Key Laboratoryof Aquatic Genetic Breeding and Healthy Aquaculture.

语种：英文

外文关键词：Acidification; Hypoxia; Gonad; Antioxidant response; Mytilus coruscus

外文摘要：This study investigated the combined effects of seawater acidification and hypoxia on the antioxidant response in gonads of the thick shell mussel Mytilus coruscus. Mussels were collected along the Shengsi Island, East China Sea, where oxygen and pH fluctuations frequently occur in summer. Mussels were exposed to three pH (8.1, 7.7, and 7.3) and two dissolved oxygen (DO) levels (6 and 2 mg L-1) for 21 days followed by a 10-day recovery period (pH 8.1 and DO 6 mg L-1). Gonad surface area (GSA) and activity of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX), glutathione (GSH), glutathione S-transferase (GST), and malondialdehyde (MDA) in gonad were measured at days 21 and 31. Complex and enzyme-specific responses were observed after the 21-day exposure period. Overall, PCA analysis revealed a stronger effect of pH than DO. Integrated biomarker response (IBR) analysis demonstrated that low pH and DO decreased mussel's antioxidant system and increased oxidative damage with potential consequences for gonad development. Mussels exposed to low pH and DO were only partly able to recover a normal enzymatic activity after 10-day recovery period. This suggests that mussels exposed to short-term pH and DO fluctuations event in the field may suffer lasting negative impacts.