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High genetic diversity within the morphologically conservative dwarf loach, Kichulchoia brevifasciata (Teleostei: Cobitidae), an endangered freshwater fish from South Korea

Title
High genetic diversity within the morphologically conservative dwarf loach, Kichulchoia brevifasciata (Teleostei: Cobitidae), an endangered freshwater fish from South Korea
Authors
Kim D.Conway K.W.Jeon H.-B.Kwon Y.-S.Won Y.-J.
Ewha Authors
원용진
SCOPUS Author ID
원용진scopus
Issue Date
2013
Journal Title
Conservation Genetics
ISSN
1566-0621JCR Link
Citation
vol. 14, no. 4, pp. 757 - 769
Indexed
SCIE; SCOPUS WOS scopus
Abstract
The dwarf loach, Kichulchoia brevifasciata, is a primary freshwater fish endemic to South Korea (Republic of Korea). Due to its limited geographic range, special habitat requirements, and scarcity, this species has been considered one of the most endangered cobitid loaches in the world. Gene tree and species tree reconstruction derived from mitochondrial and nuclear sequence data supports the exclusivity of K. brevifasciata and the existence of two highly distinct genetic lineages (eastern and western lineages). Intraspecific genetic variation based on the corrected genetic distance ranged from 0.0013 to 0.0017 (cytochrome b) and 0-0.0012 (nuclear loci) within each lineage and 0.0349 (cytochrome b) and 0.0037-0.0104 (nuclear loci) between the lineages. Although morphologically homogeneous, eastern and western lineages were estimated to have diverged roughly 2.79 million years ago (4.25-1.42, 95 % HPD). Future conservation efforts for K. brevifasciata should consider these genetically distinct lineages as separate evolutionary entities and adopt conservation efforts accordingly. © 2013 Springer Science+Business Media Dordrecht.
DOI
10.1007/s10592-013-0462-2
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자연과학대학 > 생명과학전공 > Journal papers
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