Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
권호 표지

Feeding Habits of the Mottled Skate, Beringraja pulchra in the Coastal Waters of Incheon, Korea

인천 연안에 출현하는 참홍어(Beringraja pulchra)의 식성

  • Jeong, Gyeong-Suk (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Park, Jun (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Sohn, Myoung-Ho (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Lee, Hyungbeen (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Han, Song-Hun (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Jo, Hyun-Su (Major of Marine Production System, College of Ocean Science and Technology, Kunsan National University) ;
  • Kim, Maeng Jin (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science)
  • 정경숙 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 박준 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 손명호 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 이형빈 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 한송헌 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 조현수 (군산대학교 해양과학대학 해양생산시스템전공) ;
  • 김맹진 (국립수산과학원 서해수산연구소 자원환경과)
  • Received : 2018.11.13
  • Accepted : 2018.12.27
  • Published : 2018.12.31
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Abstract

The feeding habits of Beringraja pulchra were studied using 203 specimens collected from February 2017 to March 2018 in the coastal waters of Incheon, Korea. The size of B. pulchra ranged from 31.1 to 77.7 cm in disc width (DW) and the stomachs of 16 specimens were empty. B. pulchra was a carnivore that mainly consumed fishes and shrimps, but also ate various benthic crustaceans and other invertebrates with small amounts. The main prey items in the diets of shrimps and fishes were Crangon hakodatei and Ammodytes personatus, respectively. The proportion of fishes in prey items increased with size-related while that of shrimps decreased. With increasing disc width of B. pulchra, the mean number of preys per stomach (mN/ST) and the mean weight of preys per stomach (mW/ST) were increased.

인천 주변해역에 출현하는 참홍어의 식성을 분석하기 위해 2017년 2월부터 2018월 3월까지 총 203개체를 채집하였다. 참홍어의 체반장은 31.1~77.7 cm의 범위였으며, 16개체는 공복상태였다. 참홍어는 주로 어류와 새우류를 섭식하는 육식성 어류로 확인되었으며, 그 외 다양한 저서 갑각류와 무척추동물을 소량 섭식하였다. 가장 중요한 먹이생물로 새우류인 마루자주새우의 섭식비율이 가장 높았고, 어류는 까나리의 섭식비율이 높았다. 참홍어의 체장이 커질수록 새우류의 비율은 감소하였으며 어류의 비율은 증가하는 경향을 보였다. 또한 성장함에 따라 평균 먹이생물의 개체수와 중량은 증가하였다.

Keywords

References

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