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KMID : 1161519990030010079
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Animal Cells and Systems
1999 Volume.3 No. 1 p.79 ~ p.87
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Unusual mitochondrial DNA polymorphism of the blue mussel (mytilus edulis) species complex on the southern coast of Korea
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Kim Ik-Soo
Min Byung-Yoon
Yoon Myung-Hee
Yoo Myong-Suk
Kim Doh-Hoon
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Abstract
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Mitochondrial DNA (mtDNA) from 54 specimens of the blue mussel (Mytilus edulis) species complex sampled from the southern coast of Korea was assayed for polymorphism with a portion of the COIII gene (336 bp). Fifteen haplotypes were found. PAUP, one?step networks, and PHYLIP analyses revealed the presence of two clearly differentiated mitochondrial clades (termed clades B and E), separated by 3.6% of minimum sequence divergence. The distribution pattern of the species appears to be consistent with category II of the phylogeographic pattern sensu (Avise et al., 1987); the presence of two discontinuous and distinct mtDNA genotypes in the same geographic region. This unusual mitochondrial polymorphism was explained by the presence of the Mediterranean species, M. galloprovincialis, possessing mtDNA of both M. galloprovincialis and M. edulis.
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KEYWORD
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Mytilus species complex, Mytilus galloprovincialis, Mytilus edulis, Cytochrome oxidase III, mtDNA polymorphism, Southern coast of Korea, mtDNA introgression
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