Animal Systematics, Evolution and Diversity

  • 제39권4호
  • /
  • Pages.264-271
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  • 2023
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  • 2234-6953(pISSN)
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  • 2234-8190(eISSN)
한국동물분류학회 (The Korean Society of Systematic Zoology)
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Genetic Structure of the Jellyfish Rhopilema esculentum (Scyphozoa: Rhizostomatidae) in Korean Coastal Waters

  • Soo-Jung Chang (Marine Environment Impact Assessment Center, National Institute of Fisheries Science) ;
  • Jang-Seu Ki (Department of Life Sciences, Sangmyung University) ;
  • Won-Duk Yoon (Human and Marine Ecosystem Research Laboratory) ;
  • Ga-Eun Jun (Marine Environment Impact Assessment Center, National Institute of Fisheries Science)
  • 투고 : 2023.09.13
  • 심사 : 2023.10.25
  • 발행 : 2023.10.31
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초록

The edible jellyfish Rhopilema esculentum occurs in waters throughout northeastern Asia, including in Korea, China, and Japan. In Korean waters, R. esculentum has appeared in two regions (Gangwha and Muan). Based on the appearance of young medusae and coastal distribution records, these two regions may be key R. esculentum breeding sites. In the present study, we investigate and compare the genetic structure of R. esculentum in the two regions using mitochondrial sequences (16S ribosomal RNA and cytochrome c oxidase subunit I). The genetic diversity of the R. esculentum population at Ganghwa exceeded that of the population at Muan. Despite considerable geographic separation (400 km) between the two regions(Gangwha and Muan), our haplotype network suggests that the Gangwha and Muan populations of R. esculentum are related. The simple and monotonous genetic structure of the Muan population shows that R. esculentum emergence is relatively recent. In contrast, the Gangwha population shows evolution. Moreover, jellyfish of the Gangwha population are genetically diverse and remain constant despite environmental fluctuations in the Han River. The Gangwha area is considered to be the old origin of R. esculentum in Korea.

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과제정보

This research was supported in part by the project titled "Environmental monitoring and assessment in fishery and aquaculture areas of Korean coastal waters(No. R2023014)" funded by National Institute of Fisheries Science.

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