Document of bibliographic reference 339699

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Identification of Saccostrea mordax and a New Species Saccostrea mordoides sp. nov. (Bivalvia: Ostreidae) from China

Abstract

The taxonomy of Saccostrea oysters is problematic because of their highly variable shells. Molecular studies have revealed diverse sequence lineages that do not correspond to valid species names including some Saccostrea mordax–like oysters. The S. mordax–like oysters (n = 202) were collected from southern China and classified into three lineages, A, B, and C, based on both shell morphology and mitochondrial 16S ribosomal RNA (16S) and cytochrome oxidase I (COI) sequences. Molecular and morphological analyses indicate lineages A and B are S. mordax, and lineage C is a new species Saccostrea mordoides sp. nov. The shell morphology of the new species is variable, as in other Saccostrea oysters, but distinctive in that shell height is similar to shell length with the right valve much smaller than the left valve and having undulate laminae. The average Kimura's two-parameter distance between S. mordoides sp. nov. and other Saccostrea oysters is 0.046–0.120 for 16S and 0.106–0.240 for COI, which are significantly higher than typical distances among closely related oyster species. This study shows that S. mordoides is a new species different from S. mordax, highlighting rich species diversity of Saccostrea oysters and the need for molecular taxonomy.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000647346000007

Bibliographic citation

Cui, Z.; Hu, L.; Li, C.; Zhang, Z.; Guo, X.; Wang, H. (2021). Identification of Saccostrea mordax and a New Species Saccostrea mordoides sp. nov. (Bivalvia: Ostreidae) from China. J. Shellfish Res. 40(1): 63-75. https://dx.doi.org/10.2983/035.040.0107

Topic

Marine

Is peer reviewed

true

Access rights

open access

Is accessible for free

true