[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.11626/KJEB.2018.36.3.352

Development of a Species Identification Method for the Egg and Fry of the Three Korean Bitterling Fishes (Pisces: Acheilognathinae) using RFLP (Restriction Fragment Length Polymorphism) Markers

Choi, Hee-kyu (Molecular Ecology and Evolution Laboratory, Department of Biological Science, College of Science & Engineering, Sangji University)
Lee, Hyuk Je (Molecular Ecology and Evolution Laboratory, Department of Biological Science, College of Science & Engineering, Sangji University)

Publication Information

Korean Journal of Environmental Biology / v.36, no.3, 2018 , pp. 352-358 More about this Journal

Abstract

This study aimed to develop a species identification method for the egg and fry of the three Korean bitterling fishes (Pisces: Acheilognathinae), including Acheilognathus signifer, Acheilognathus yamatsutae and Rhodeus uyekii based on the PCR-based Restriction Fragment Length Polymorphism (RFLP) markers. We conducted a field survey on the Deokchicheon River from the North Han River basin, where the three Acheilognathinae species co-occur, and also analyzed the existing sequence dataset available from the GenBank. We found coexistence of the three species at the study site. The egg and fry were obtained from the host mussels (Unio douglasiae sinuolatus) by hand from May to June 2015 and in May 2017. To develop PCR-based RFLP markers for species identification of the three Acheilognathinae fish species, restriction enzymes pinpointing species-specific single nucleotide variation (SNV) sites in mitochondrial DNA COI (cytochrome oxidase I) and cyt b (cytochrome b) genes were determined. Genomic DNA was extracted from the egg and fry and RFLP experiments were carried out using restriction enzymes Apal I, Stu I and EcoR V for A. signifer, A. yamatsutae and R. uyekii, respectively. Consequently, unambiguous discrimination of the three species was possible, as could be seen in DNA band patterns from gel electrophoresis. Our developed PCR-based RFLP markers will be useful for the determination of the three species for the young and would assist in studying the spawning patterns and reproductive ecology of Acheilognathinae fishes. Furthermore, we believe the obtained information will be of importance for future maintenance, management and conservation of these natural and endangered species.

Keywords

bittering; egg and fry; species identification; PCR-RFLP; host mussels;

Citations & Related Records

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