Mitochondrial DNA sequence analysis from multiple gene fragments reveals genetic heterogeneity of Crassostrea ariakensis in East Asia

Kim, Woo-Jin, Dammannagoda, Sudath T., Jung, Hyungtaek, Baek, Il Seon, Yoon, Ho Seop, & Choi, Sang Duk (2014) Mitochondrial DNA sequence analysis from multiple gene fragments reveals genetic heterogeneity of Crassostrea ariakensis in East Asia. Genes and Genomics, 36(5), pp. 611-624.

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The native Asian oyster, Crassostrea ariakensis is one of the most common and important Crassostrea species that occur naturally along the coast of East Asia. Molecular species diagnosis is a prerequisite for population genetic analysis of wild oyster populations because oyster species cannot be discriminated reliably using external morphological characters alone due to character ambiguity. To date there have been few phylogeographic studies of natural edible oyster populations in East Asia, in particular this is true of the common species in Korea C. ariakensis. We therefore assessed the levels and patterns of molecular genetic variation in East Asian wild populations of C. ariakensis from Korea, Japan, and China using DNA sequence analysis of five concatenated mtDNA regions namely; 16S rRNA, cytochrome oxidase I, cytochrome oxidase II, cytochrome oxidase III, and cytochrome b. Two divergent C. ariakensis clades were identified between southern China and remaining sites from the northern region. In addition, hierarchical AMOVA and pairwise UST analyses showed that genetic diversity was discontinuous among wild populations of C. ariakensis in East Asia. Biogeographical and historical sea level changes are discussed as potential factors that may have influenced the genetic heterogeneity of wild C. ariakensis stocks across this region.

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ID Code: 87258
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Crassostrea ariakensis, Phylogeographic studies, Concatenated mtDNA regions, Genetic heterogeneity
DOI: 10.1007/s13258-014-0198-5
ISSN: 2092-9293
Divisions: Current > Research Centres > Centre for Tropical Crops and Biocommodities
Current > Schools > School of Earth, Environmental & Biological Sciences
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: �Copyright 2014 The Genetics Society of Korea and Springer-Science and Media
Copyright Statement: The final publication is available at Springer via http://10.1007/s13258-014-0198-5
Deposited On: 10 Sep 2015 01:18
Last Modified: 14 Sep 2015 04:33

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