Document of bibliographic reference 287797

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Mitochondrial DNA and morphological identification of Crassostrea zhanjiangensis sp. nov. (Bivalvia: Ostreidae): a new species in Zhanjiang, China

Abstract

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.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000328896400001

Bibliographic citation

Wu, X.; Xiao, S.; Yu, Z. (2013). Mitochondrial DNA and morphological identification of Crassostrea zhanjiangensis sp. nov. (Bivalvia: Ostreidae): a new species in Zhanjiang, China. Aquat. Living Resour. 26(4): 273-280. https://dx.doi.org/10.1051/alr/2013065

Topic

Marine

Is peer reviewed

true

Access rights

open access

Is accessible for free

true