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Shell morphology and genetic characteristics of Corbula (Potamocorbula) spp. (Bivalvia: Corbulidae) from the waters adjacent to Japan, Korea and San Francisco Bay

2013; Inter-Research; Volume: 19; Issue: 3 Linguagem: Inglês

10.3354/ab00539

2195-2744

Masaaki Owada, Yuki Kasai, Shinjiro Sato, J.‐S. Hong,

Marine Bivalve and Aquaculture Studies

AB Aquatic Biology Contact the journal Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections AB 19:297-305 (2013) - DOI: https://doi.org/10.3354/ab00539 Shell morphology and genetic characteristics of Corbula (Potamocorbula) spp. (Bivalvia: Corbulidae) from the waters adjacent to Japan, Korea and San Francisco Bay Masato Owada1,*, Yoshitaro Kasai2, Shin'ichi Sato3, Jae-Sang Hong4 1Department of Biological Sciences, Kanagawa University, 2946 Tsuchiya, Hiratsuka 259-1293, Japan 2Department of Earth Sciences, Graduate School of Science, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan 3The Tohoku University Museum, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan 4Department of Oceanography, Inha University, Incheon 402-751, South Korea *Email: owada-bio@kanagawa-u.ac.jp ABSTRACT: Corbula (Potamocorbula) spp. are natively distributed in the waters adjacent to Japan and Korea. These populations are distinguished by 6 morphological characteristics. However, they have high geographic variation, and it is quite difficult to distinguish among them. In the present study, we investigated the geographic distribution of the morphological and genetic characteristics of Corbula (Potamocorbula) spp. collected from the waters adjacent to Japan, Korea and San Francisco Bay, USA. Shell morphology was inferred through canonical discriminant analysis (CDA) of 8 shell characteristics, and genetic characteristics were analysed using the DNA sequences of mitochondrial cytochrome c oxidase subunit 1 (CO1) and nuclear internal transcribed spacer 2 (ITS2) regions. The results of CDA showed that the samples from Ganghwa-do in western Korea could be clearly separated from those of all the other localities. The molecular phylogenetic tree and haplotype network that were constructed from the CO1 and ITS2 regions, respectively, did not show clear groupings among the collected samples, except for 1 group composed of samples from Ganghwa-do. In addition, no differences in CO1 amino acid sequences could be found among any of the samples examined, including the Ganghwa-do samples. These facts suggest that Corbula (Potamocorbula) spp. distributed in the waters adjacent to Japan and Korea were separated into 2 groups. However, these 2 groups were genetically closely related, and it seems appropriate to treat them as 2 distinct species. The classification of the subgenus Potamocorbula should be re-examined at the species level. KEY WORDS: Mollusca · Bivalvia · Corbulidae · Potamocorbula · Phylogeography · Classification · Mitochondrial cytochrome c oxidase subunit 1 · Nuclear internal transcribed spacer 2 Full text in pdf format PreviousCite this article as: Owada M, Kasai Y, Sato S, Hong JS (2013) Shell morphology and genetic characteristics of Corbula (Potamocorbula) spp. (Bivalvia: Corbulidae) from the waters adjacent to Japan, Korea and San Francisco Bay. Aquat Biol 19:297-305. https://doi.org/10.3354/ab00539 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in AB Vol. 19, No. 3. Online publication date: November 11, 2013 Print ISSN: 1864-7782; Online ISSN: 1864-7790 Copyright © 2013 Inter-Research.