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DOI	10.1016/j.marpolbul.2018.12.030
	Calcium carbonate unit realignment under acidification: A potential compensatory mechanism in an edible estuarine oyster
	Meng Y.; Guo Z.; Yao H.; Yeung K.W.K.; Thiyagarajan V.
发表日期	2019
ISSN	0025326X
起始页码	141
结束页码	149
卷号	139
英文摘要	Ocean acidification (OA) is well-known for impairing marine calcification; however, the end response of several essential species to this perturbation remains unknown. Decreased pH and saturation levels (Ω) of minerals under OA is projected to alter shell crystallography and thus to reduce shell mechanical properties. This study examined this hypothesis using a commercially important estuarine oyster Magallana hongkongensis. Although shell damage occurred on the outmost prismatic layer and the undying myostracum at decreased pH 7.6 and 7.3, the major foliated layer was relatively unharmed. Oysters maintained their shell hardness and stiffness through altered crystal unit orientation under pH 7.6 conditions. However, under the undersaturated conditions (ΩCal ~ 0.8) at pH 7.3, the realigned crystal units in foliated layer ultimately resulted in less stiff shells which indicated although estuarine oysters are mechanically resistant to unfavorable calcification conditions, extremely low pH condition is still a threat to this essential species. © 2018
英文关键词	Calcification; Compensatory mechanism; Crystallography; Mechanical property; Ocean acidification; Oyster shells
语种	英语
scopus关键词	Acidification; Biomineralization; Bone; Calcification (biochemistry); Calcium carbonate; Crystallography; Estuaries; Mechanical properties; Molluscs; Shellfish; Shells (structures); Crystal units; Ocean acidifications; Oyster shell; pH condition; Prismatic layers; Saturation levels; Crystal orientation; calcium carbonate; mineral; calcium carbonate; carbon dioxide; sea water; calcification; calcium carbonate; crystallography; hypothesis testing; marine pollution; mechanical property; mollusc; ocean acidification; shell; acidification; adult; animal experiment; animal shell; animal tissue; Article; controlled study; Crassostrea; crystal; crystallography; estuarine species; female; hardness; juvenile animal; Magallana hongkongensis; male; mechanics; nonhuman; ocean acidification; oyster; pH; rigidity; animal; biomechanics; bone mineralization; chemistry; growth, development and aging; Ostrea; scanning electrochemical microscopy; ultrastructure; Magallana; Ostreidae; Animal Shells; Animals; Biomechanical Phenomena; Calcification, Physiologic; Calcium Carbonate; Carbon Dioxide; Crystallography; Hydrogen-Ion Concentration; Microscopy, Electrochemical, Scanning; Ostrea; Seawater
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150164
作者单位	The Swire Institute of Marine Sciences, School of Biological Sciences, The University of Hong Kong, Hong Kong Special Administrative Region, Hong Kong; Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region, Hong Kong; Department of Orthopaedics and Traumatology, Queen Mary Hospital, The University of Hong Kong, Hong Kong Special Administrative Region, Hong Kong; State Key Laboratory for Marine Pollution, Hong Kong Special Administrative Region, Hong Kong
推荐引用方式 GB/T 7714	Meng Y.,Guo Z.,Yao H.,et al. Calcium carbonate unit realignment under acidification: A potential compensatory mechanism in an edible estuarine oyster[J],2019,139.
APA	Meng Y.,Guo Z.,Yao H.,Yeung K.W.K.,&Thiyagarajan V..(2019).Calcium carbonate unit realignment under acidification: A potential compensatory mechanism in an edible estuarine oyster.Marine Pollution Bulletin,139.
MLA	Meng Y.,et al."Calcium carbonate unit realignment under acidification: A potential compensatory mechanism in an edible estuarine oyster".Marine Pollution Bulletin 139(2019).