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First Record of Polymetme elongata (Stomiiformes: Phosichthyidae) from the Southern Yellow Sea and Jejudo Island, Korea

황해 남부 및 제주도 남부 해역에서 채집된 Polymetme elongata (앨퉁이목: 긴앨퉁이과) 한국 첫기록

  • Min-Yeong Im (Department of Marine Biology, Pukyong National University) ;
  • Jeong-Ho Park (South Sea Fisheries Research Institute, National Institutue of Fisheries Science) ;
  • Seo-Ha Jang (Institute of Biodiversity-assessment Technology and Restoration Systems) ;
  • Jin-Koo Kim (Department of Marine Biology, Pukyong National University)
  • 임민영 (부경대학교 해양생물학과) ;
  • 박정호 (국립수산과학원 남해수산연구소) ;
  • 장서하 ((주)비티알에스) ;
  • 김진구 (부경대학교 해양생물학과)
  • Received : 2023.02.10
  • Accepted : 2023.05.23
  • Published : 2023.05.31

Abstract

Two specimens of Polymetme elongata (Phosichthyidae; Polymetme) were collected by a bottom trawl from both the southern coastal waters of Jejudo Island in October 2016 (70.65 mm SL) and Yellow Sea, Korea in August 2022 (54.04 mm SL). They are an elongated body with large mouth, 11 dorsal fin rays, 10 pectoral fin rays, 7 pelvic fin rays, 30~32 anal fin rays, 1 adipose fin, 18 gill rakers, 44 vertebrae, 1 preorbital photophore, 1~2 ventrolateral rows of photophores on body, 1 paired photophores in symphysis of lower jaw, 9 branchiostegal rays, 2 rows of 8 phorophores between pelvic fin origin and anal fin origin, and 1 row of 23 photophores thereafter. At the origin of anal fin, the second photophore is more higher than third photophore and the first photophore is most lowest. Our specimens differ from the other species of the same genus by the ratio of the head length to the standard length (1/5) and the gill rakers (18), absolutely. As this species is the first record of the family Phosichthyidae, genus Polymetme, and P. elongata in Korean waters, we suggest their new Korean names, "Gin-ael-tung-i-gwa", "Gin-ael-tung-i-sog", and "Gin-ael-tung-i", respectively.

2016년 10월 제주도 남부 연안(체장 70.65 mm) 및 2022년 8월 전라남도 영광군 근해(체장 54.04 mm)에서 Phosichthyidae과 Polymetme속에 속하는 Polymetme elongata 2개체를 저인망으로 채집하였다. 본 종은 길쭉한 체형과 큰 입을 가진다. 등지느러미 연조는 11개, 가슴지느러미 연조는 10개, 배지느러미 연조는 7개, 뒷지느러미 연조는 30~32개, 기름지느러미는 1개이다. 눈 앞 발광기는 1개, 복부의 발광기는 1~2열, 아래턱 유합부에 1쌍의 발광기, 새조골에 9개의 발광기, 배지느러미 기점과 뒷지느러미 기점 사이에 8개의 발광기가 2열로 나 있고, 그 뒤로 23개의 발광기가 1열로 나 있다. 뒷지느러미 기점의 두 번째 발광기는 세 번째 발광기보다 높이 위치하고, 첫 번째 발광기가 가장 낮게 위치한다. 본 개체는 체장 대비 두장의 비율(1/5)과 새파수(18개)에서 동속의 다른 종과 확실한 차이를 가진다. 한국 연근해에서 처음 출현한 Phosichthyidae과, Polymetme속, Polymetme elongata의 국명으로 각각 "긴앨퉁이과", "긴앨퉁이속", "긴앨퉁이"를 제안한다.

Keywords

Acknowledgement

논문을 세심하게 검토해 주신 세 분 심사위원께 감사드립니다. 또한 표본을 대여해 주신 가고시마대학교 박물관(Kagoshima University Museum) Hiroyuki Motomura 박사님께 감사드립니다. 이 논문은 2023년도 국립수산과학원 수산시험연구사업(R2023010)과 국립해양생물자원관 '해양생명자원 기탁등록보존 기관 운영(2023)' 사업의 지원을 받아 수행되었습니다.

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