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学科主题: Fisheries ; Marine & Freshwater Biology
题名: Mitochondrial DNA and morphological identification of Crassostrea zhanjiangensis sp nov (Bivalvia: Ostreidae): a new species in Zhanjiang, China
作者: [Wu, Xiangyun ; Xiao, Shu ; Yu, Ziniu] Chinese Acad Sci, CAS Key Lab Trop Marine Bioresources & Ecol, Guangdong Key Lab Appl Marine Biol, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China
通讯作者: carlzyu@scsio.ac.cn
关键词: Mitochondrial gene ; PCR ; Molecular identification ; Phylogeny ; New species ; Oyster ; crassostrea
刊名: AQUATIC LIVING RESOURCES
发表日期: 2013
卷: 26, 期:4, 页:273-280
部门归属: LMB
资助者: This work was financially supported by a National Science Foundation of China (No. 40906077), a Knowledge Innovation Program of the Chinese Academy of Sciences (No. SQ200804) and the earmarked fund for Modern Agro-industry Technology Research System. The authors thank Prof. Elizabeth De Stasio for her English editing.
摘要: Cupped oysters (Ostreidae, genus Crassostrea) occupy nearshore marine and estuarine habitats worldwide, providing many ecosystem goods and services as well as being a commercially important group of bivalves. In this study, the species identification of an "adulterant" oyster with small body size, which is often misidentified as a "young individual" of other sympatric species, including C. sikamea and C. hongkongensis, was determined for the first time, based on molecular markers (partial mitochondrial cox1 and rrnL genes), phylogenetic analysis, and morphometric approaches. This novel species, C. zhanjiangensis, commonly known as the "cat ear oyster" in Guandu (a famous estuarine oyster farming region of Zhanjiang, Guangdong Province, China), appears to potentially influence the efficiency of C. hongkongensis spat collection due to niche competition on spat collection devices. Phylogenetic analyses confirm its status as the most basal taxon of the Indo-Pacific Crassostrea. A comparative study of the shell characteristics of C. zhanjiangensis, and other Crassostrea species revealed several distinctive morphological traits, including a generally smaller body size, a deeply cupped left valve, and a right valve that is convex in adults but flat in young individuals. Other distinctive features of the new species include life cycle traits that are unique compared with the sympatric C. hongkongensis and C. sikamea species, such as a higher growth rate in the fast growth phase after settlement, followed by a significantly slower growth rate and mass mortality during subsequent life stages. This study provides the basic information necessary for further ecological and population genetic studies on this new species.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000328896400001
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10979
Appears in Collections:中科院海洋生物资源可持续利用重点实验室_期刊论文

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[Wu, Xiangyun; Xiao, Shu; Yu, Ziniu] Chinese Acad Sci, CAS Key Lab Trop Marine Bioresources & Ecol, Guangdong Key Lab Appl Marine Biol, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China.Mitochondrial DNA and morphological identification of Crassostrea zhanjiangensis sp nov (Bivalvia: Ostreidae): a new species in Zhanjiang, China,AQUATIC LIVING RESOURCES,2013,26(4):273-280
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