Additional sequence data from five specimens of Ostreidae and one specimen of Tridacna gigas were downloaded from Gen.Įfecto de bacterias probióticas en el cultivo larvario del ostión de placer Crassostrea corteziensis ( Bivalvia: Ostreidaeĭirectory of Open Access Journals (Sweden)įull Text Available El ostión de placer u ostra del Cortés (Crassostrea corteziensis se considera como una especie con potencial para ser cultivada en gran escala. Ten oyster species of the family Ostreidae (Subfamilies Crassostreinae and Lophinae) from Thailand were studied using morphological data and mitochondrial 16S rDNA gene sequences. Phylogenetic analysis of Thai oyster ( Ostreidae) based on partial sequences of the mitochondrial 16S rDNA geneīussarawit, Somchai Gravlund, Peter Glenner, Henrik These results confirm the efficacy of species identification in oysters via DNA barcodes and phylogenetic analysis. However, average intra- and interspecific genetic divergences for COI were 0-1.4% (maximum 2.2%) and 2.6-32.2% (minimum 2.2%), respectively, indicating the existence of a barcoding gap. Intraspecific variability of 16S rDNA overlapped with interspecific divergence. Species forming well-differentiated clades in the molecular phylogenies were identical for both genes even when the closely related species were included. Relationships among species were estimated by the phylogenetic analyses of both genes, and then pairwise inter- and intraspecific genetic divergences were assessed.
This study used two mitochondrial fragments, cytochrome c oxidase I (COI) and the large ribosomal subunit (16S rDNA), to assess whether oyster species could be identified by phylogeny and distance-based DNA barcoding techniques. As a useful tool for molecular species identification, DNA barcoding might offer significant potential for oyster identification and taxonomy.
Oysters (family Ostreidae), with high levels of phenotypic plasticity and wide geographic distribution, are a challenging group for taxonomists and phylogenetics.
Liu, Jun Li, Qi Kong, Lingfeng Yu, Hong Zheng, Xiaodong Identifying the true oysters ( Bivalvia: Ostreidae) with mitochondrial phylogeny and distance-based DNA barcoding.
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