期刊
MARINE ENVIRONMENTAL RESEARCH
卷 125, 期 -, 页码 82-89出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2017.01.007
关键词
Ocean acidification; Bivalve; Tegillarca granosa; Metabolism; Acid-base status; Calcification
资金
- NSFC [31372503, 31672634]
- International S&T Cooperation Program of China [2015DFA30980]
- Open Fund of Key Laboratory of Exploration and Preservation of Coastal Bio-resources of Zhejiang [J2015002, J2016001]
- Major S&T Project of Zhejiang [2012C13005]
- Open Fund of Key Laboratory for Ecological and Environment in Coastal Areas, SOA [201603]
Oceanic uptake of CO2 from the atmosphere has significantly reduced surface seawater pH and altered the carbonate chemistry within, leading to global Ocean Acidification (OA). The blood clam, Tegillarca granosa, is an economically and ecologically significant marine bivalve that is widely distributed along the coastal and estuarine areas of Asia. To investigate the physiological responses to OA, blood clams were exposed to ambient and three reduced seawater pH levels (8.1, 7.8, 7.6 and 7.4) for 40 days, respectively. Results obtained suggest that OA suppresses the feeding activity and aerobic metabolism, but elevates proteins catabolism of blood clams. OA also causes extracellular acidosis and decreases haemolymph Ca2+ concentration. In addition, our data also suggest that OA impairs the calcification process and inner shell surface integrity. Overall, OA adversely influences metabolism, acid-base status and calcification of blood clams, subsequently leading to a decrease in the fitness of this marine bivalve species. (C) 2017 Elsevier Ltd. All rights reserved.
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