Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
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Feeding Habits of the Ocellate Spot Skate (Okamejei kenojei) in the Coastal Waters of the Five West Sea Islands in Korea

서해5도 주변해역에서 출현하는 홍어(Okamejei kenojei)의 식성

  • Youn, Byeong-Il (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Choi, Dong-Hyek (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Lee, Seung-Jong (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Lee, Seung-Hwan (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Han, Kyeong-Ho (Chonnam National University, Department of Aqualife Science) ;
  • Kim, Maeng Jin (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science)
  • 윤병일 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 최동혁 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 이승종 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 이승환 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 한경호 (전남대학교 수산해양대학 양식생물학과) ;
  • 김맹진 (국립수산과학원 서해수산연구소 자원환경과)
  • Received : 2020.06.15
  • Accepted : 2020.09.18
  • Published : 2020.09.30
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Abstract

The feeding habits of ocellate spot skate (Okamejei kenojei) were studied by analysis of stomach contents. Specimens of O. kenojei (n=379) were collected in the cosatal waters five west Islands of the Korea, monthly from January to December 2019. The size of O. kenojei ranged from 5.9 to 34.5 cm in disc width (DW). O. kenojei was consumed mainly macrura (77.9%) and pisces (21.9%) in % IRI. But, brachyura, stomatopoda, cephalopods, and others showed a low ratio. The macruara feeding rate was highest in summer, whereas the proportion of pisces was the higher in winter than other seasons.

2019년 1월부터 12월까지 서해5도 주변해역에서 채집된 홍어 379개체의 위내용물 조성을 조사하였다. 홍어의 체반장은 5.9~34.5 cm의 범위를 보였고, 새우류가 가장 우점한 먹이생물 분류군으로 나타났으며, 그 다음으로 어류의 비율이 높았고, 그 외 집게류, 갑각류, 두족류 등이 낮은 비율로 섭식되었다. 새우류의 비율은 하계에서 가장 낮은 비율을 보였고, 동계에서는 높았으며, 어류는 하계에서는 높았고, 동계에서는 낮게 나타났다.

Keywords

References

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