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논문 기본 정보

자료유형
학술저널
저자정보
Kim Keun-Sik (National Institute of Ecology) Kang Dong-Won (National Institute of Ecology) Kim Keun-Yong (AquaGenTech Co. Ltd) Heo Jung Soo (AquaGenTech Co. Ltd) Song Ha-Yoon (National Institute of Fisheries Science) Yoon Ju-Duk (National Institute of Ecology)
저널정보
한국유전학회 Genes & Genomics Genes & Genomics Vol.44 No.8
발행연도
2022.8
수록면
945 - 956 (12page)
DOI
10.1007/s13258-022-01265-6

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Background The freshwater fish Gobiobotia naktongensis (Teleostei, Cypriniformes, and Gobionidae) is an endangered class I species whose population size has been greatly reduced. Objective To successfully protect and restore the highly endangered freshwater fish G. naktongensis from the Geum River in South Korea. Methods The mitogenome was characterized using the primer walking method with phylogenetic relationships. Results The complete mitogenome of G. naktongensis Geum River was 16,607 bp, comprising 13 protein-coding genes, 2 ribosomal RNA genes, and 22 transfer RNA (tRNA) genes. Seventeen substitutions were found by comparing the tRNA regions between G. naktongensis Geum and Nakdong Rivers and G. pappenheimi; most were specific to G. naktongensis Nakdong River, with changes in their secondary structures. The comparison between G. naktongensis Geum River and G. pappenheimi revealed differences in the lengths of the D-loop and two tRNAs (tRNAArg and tRNATrp) and the secondary structures in the TΨC-arm of tRNAHis. In the phylogenetic tree, G. naktongensis Geum River did not cluster with its conspecific specimen from the Nakdong River in South Korea, but showed the closest relationship to G. pappenheimi in mainland China. Conclusions Our results support the existence of the Paleo-Huanghe River connecting the Korean peninsula and mainland China, suggesting that G. naktongensis in the Geum River should be treated as a different evolutionarily significant unit separated from that in the Nakdong River. The complete mitogenome of G. naktongensis Geum River provides essential baseline data to establish strategies for its conservation and restoration.

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