Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Feeding habits of the ridged-eye flounder, Pleuronichthys cornutus in South Sea, Korea

한국 남해에 출현하는 도다리(Pleuronichthys cornutus)의 식성

  • Min Seo KIM (Department of Marine Biology Science/Marine Bio-Education & Research Center, College of Marine Science, Gyeongsang National University) ;
  • Jae Mook JEONG (Fisheries Resources Research Center, National Institute of Fisheries Science) ;
  • Jeong Hoon LEE (Fisheries Resources Research Center, National Institute of Fisheries Science) ;
  • Gun Wook BAECK (Department of Marine Biology Science/Institute of Marine Industry/Marine Bio-Education & Research Center, College of Marine Science, Gyeongsang National University)
  • 김민서 (경상국립대학교 해양생명과학과/해양산업연구소/해양생물교육연구센터) ;
  • 정재묵 (국립수산과학원 수산자원연구센터) ;
  • 이정훈 (국립수산과학원 수산자원연구센터) ;
  • 백근욱 (경상국립대학교 해양생명과학과/해양산업연구소/해양생물교육연구센터)
  • Received : 2024.08.09
  • Accepted : 2024.08.28
  • Published : 2024.08.31
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Abstract

To determine the diet of Ridged-eye flounder, Pleuronichthys cornutus in the South Sea of Korea, a total of 207 individuals were collected in 2022 (February, April, May, August, and November) and 2023 (January, February, April, July, and October) by the Fisheries science survey vessels of NIFS. The total length (TL) range of these specimens was from 14.1 to 33.9 cm, and the stomach contents of 100 individuals, not on an empty stomach, were analyzed. Polychaeta was the most important prey component in the diets of P. cornutus based on an Index of relative importance (%IRI) of 55.5%. Followed by amphipoda with a %IRI value of 21.3%. Polychaeta was an important component in diets across all size classes (< 20.0 cm, 20.0-25.0 cm, ≥ 25.0 cm) of P. cornutus; as they grew, the %IRI value of amphipoda decreased and the %IRI value of anthozoa and holothuroidea increased. There was also a significant increase in the mean weight of prey per stomach with growth. P. cornutus consumed polychaeta in all seasons, with spring and autumn being the most dominant seasons. In summer, gastropoda was the dominant prey, and in winter, holothuroidea was the dominant prey.

Keywords

Acknowledgement

이 논문은 2024년도 국립수산과학원 수산과학연구사업(R2024001)의 지원을 통해 수행된 연구입니다.

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