Combined effects of ocean acidification and hypoxia on the early development of the thick shell mussel Mytilus coruscus

• Published in: Helgoland Marine Research
• Main Authors: Wang, Xinghuo, Shang, Yueyong, Kong, Hui, Hu, Menghong, Yang, Jinlong, Deng, Yuewen, Wang, Youji
• Other Authors: Guangdong South China Sea Key Laboratory of Aquaculture for Aquatic Economic Animals, the Open Fund of Shandong Key Laboratory of Disease Control in Mariculture, the Shanghai Pujiang Talent Program, Shanghai Municipal Natural Science Foundation, Natural Science Foundation of China
• Format: Article in Journal/Newspaper
• Language: English
• Published: Springer Science and Business Media LLC 2020
• Subjects: Aquatic Science; Oceanography; Ocean acidification
• Online Access: http://dx.doi.org/10.1186/s10152-020-0535-9; http://link.springer.com/content/pdf/10.1186/s10152-020-0535-9.pdf; http://link.springer.com/article/10.1186/s10152-020-0535-9/fulltext.html

Abstract Ocean acidification has become serious, and seawater hypoxia has become evident in acidified waters. The combination of such stressors may have interactive effects on the fitness of marine organisms. In order to investigate the interactive effects of seawater acidification and hypoxia on the early development of marine bivalves, the eggs and sperm of the thick shell mussel Mytilus coruscus were exposed to combined treatments of pH (8.1, 7.7, 7.3) and dissolved oxygen (2, 6 mg/L) for 96 h culture observation to investigate the interactive effects of seawater acidification and hypoxia on the early development of marine bivalves. Results showed that acidification and hypoxia had significant negative effects on various parameters of the early development of the thick shell mussel. However, hypoxia had no effect on fertilization rate. Significant interactions between acidification and hypoxia were observed during the experiment. Short-term exposure negatively influenced the early development of the thick shell mussel but did not affect its survival. The effects of long-term exposure to these two environmental stresses need further study.