GEO DATA

Data Article

Complete Mitochondrial Genome Sequence of Malacocottus gibber from the Deep-sea of the East Sea, Korea: Yo-Soon Jang; GEO DATA. 2024;6(4):521-528. Published online December 31, 2024; DOI: https://doi.org/10.22761/GD.2024.0049

Abstract PDF: Malacocottus gibber is a deep-sea fish belonging to the family Psychrolutidae, distributed in the temperate waters of the northwestern Pacific, including northern Hokkaido and the Sea of Okhotsk in Japan. To understand the genetic characteristics of deep-sea fish, we analyzed the complete mitochondrial genome sequence of Malacocottus gibber. The total length of the mitochondrial genome of Malacocottus gibber was 17,240 bp, with a gene composition similar to that observed in most other teleosts and higher vertebrates (13 protein-coding genes, two ribosomal RNA genes, and 22 transfer RNA genes). The major non-coding region of the Malacocottus gibber mitochondrial genome was located between tRNA^Pro and tRNA^Phe, and its length was determined to be 1,571 bp.

Article

Development of the Method for Authentication of the Genus Anguilla Sold on the Korean Fish Market and Current Status of Distribution: Yo-Soon Jang; GEO DATA. 2022;4(1):16-26. Published online March 31, 2022; DOI: https://doi.org/10.22761/DJ2022.4.1.002

Abstract PDF: This study was carried out to identify the mislabeling of Japanese eel (Anguilla japonica) sold on the fish markets in Korea and to develop a method for determining the authenticity of fresh and trimmed eels. Between January and December 2018, 31 test samples were collected from restaurants and fish markets in Seoul, South Korea, and the collected samples were analyzed. The results showed that over two-thirds of the samples tested were mislabeled. Molecular identification of 31 test samples revealed that 10 Anguilla japonica, 9 Anguilla Anguilla, 2 Anguilla rostrate, 1 Anguilla marmorata, 7 Ophichthus remiger, 1 Brachysomophis crocodilinus, and 1 Conger myriaster. We have developed the NdeⅠPCR-RFLP assay for determining the authentication of fresh and trimmed eels sold on the fish markets in Korea, and this assay enables rapidly and accurately identify the genus Anguilla.

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