文献类型：期刊文献

英文题名：Diel-cycling seawater acidification and hypoxia impair the physiological and growth performance of marine mussels

作者：Shang, Yueyong[1,2];Wang, Xinghuo[1,2];Deng, Yuewen[3];Wang, Shixiu[1,2];Gu, Huaxin[1,2];Wang, Ting[1,2];Xu, Guangen[1,2];Kong, Hui[1,2];Feng, Yixuan[1,2];Hu, Menghong[1,2];Wang, Youji[1,2]

机构：[1]Shanghai Ocean Univ, Minist Sci & Technol, Int Res Ctr Marine Biosci, Shanghai 201306, Peoples R China;[2]Shanghai Ocean Univ, Key Lab Explorat & Utilizat Aquat Genet Resources, Minist Educ, Shanghai 201306, Peoples R China;[3]Guangdong Ocean Univ, Fisheries Coll, Zhanjiang 524088, Peoples R China

年份：2020

卷号：722

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：SCI-EXPANDED(收录号：WOS:000535470700011)、、EI(收录号：20201208324683)、Scopus(收录号：2-s2.0-85081885796)、WOS

基金：The authors acknowledge funding from the research grant (31872587) fromtheNatural Science Foundation of China, the Shanghai Pujiang Talent Program(18PJ1404000), and a grant fromShanghaiMunicipal Natural Science Foundation (17ZR1412900). This work was also supported by Guangdong South China Sea Key Laboratory of Aquaculture for Aquatic Economic Animals, Guangdong Ocean University (KFKT2019ZD04) and the Open Fund of Shandong Key Laboratory of Disease Control in Mariculture (KF201802).

语种：英文

外文关键词：Acidification; Hypoxia; Diel-cycling; Mussel; Growth; Hemolymph

外文摘要：Ocean acidification and hypoxia are concurrent in some coastal waters due to anthropogenic activities in the past decades. In the natural environment, pH and dissolved oxygen (DO) may fluctuate and follow diel-cycling patterns, but such effects on marine animals have not been comprehensively studied compared to their constant effects. In order to study the effects of diel-cycling seawater acidification and hypoxia on the fitness of marine bivalves, the thick shell mussels Mytilus coruscus were exposed to two constant levels of dissolved oxygen (2 mg/L, 8 mg/L) under two pH treatments (7.3, 8.1), as well as single diel fluctuating pH or DO, and the combined diel fluctuating of pH and DO for three weeks. The experimental results showed that constant acidification and hypoxia significantly reduced the extracellular pH (pH(e)) and condition index (CI) of mussels, and significantly increased HCO3, pCO(2) and standard metabolic rate (SMR). Diel fluctuating hypoxia and acidification also significantly reduced the pHe and CI, and significantly increased pCO(2) and SMR, but had no significant effects on HCO3. However, the diel-cycling acidification and hypoxia resulted in a higher CI compared to continuous exposure. In general, continuous and intermittent stress negatively impact the hemolymph and growth performance of mussels. However, mussels possess a little stronger resistance to diel-cycling seawater acidification and hypoxia than sustained stress. (C) 2020 Elsevier B.V. All rights reserved.