Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
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Feeding Habits of Small Yellow Croaker, Larimichthys polyactis in Coastal Waters of Korea

한국 연안해역에 출현하는 참조기(Larimichthys polyactis)의 식성

  • Kang, Da Yeon (Department of Marine Biology & Aquaculture/Department of Aquaculture Science/Institute of Marine Industry/Marine Bio-Education & Research Center, College of Marine Science, Gyeongsang National University) ;
  • Seong, Gi Chang (Department of Marine Biology & Aquaculture/Department of Aquaculture Science/Institute of Marine Industry/Marine Bio-Education & Research Center, College of Marine Science, Gyeongsang National University) ;
  • Kim, Do-Gyun (Department of Marine Biology & Aquaculture/Department of Aquaculture Science/Institute of Marine Industry/Marine Bio-Education & Research Center, College of Marine Science, Gyeongsang National University) ;
  • Jin, Suyeon (Department of Marine Biology & Aquaculture/Department of Aquaculture Science/Institute of Marine Industry/Marine Bio-Education & Research Center, College of Marine Science, Gyeongsang National University) ;
  • Soh, Ho Young (Department of Ocean Intergrated Science, Chonnam National University) ;
  • Baeck, Gun Wook (Department of Marine Biology & Aquaculture/Department of Aquaculture Science/Institute of Marine Industry/Marine Bio-Education & Research Center, College of Marine Science, Gyeongsang National University)
  • 강다연 (경상국립대학교 해양생명과학과/양식생명과학과/해양산업연구소/해양생물교육연구센터) ;
  • 성기창 (경상국립대학교 해양생명과학과/양식생명과학과/해양산업연구소/해양생물교육연구센터) ;
  • 김도균 (경상국립대학교 해양생명과학과/양식생명과학과/해양산업연구소/해양생물교육연구센터) ;
  • 진수연 (경상국립대학교 해양생명과학과/양식생명과학과/해양산업연구소/해양생물교육연구센터) ;
  • 서호영 (전남대학교 해양융합과학과) ;
  • 백근욱 (경상국립대학교 해양생명과학과/양식생명과학과/해양산업연구소/해양생물교육연구센터)
  • Received : 2022.07.05
  • Accepted : 2022.09.21
  • Published : 2022.09.30
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Abstract

Total 418 Yellow Croaker Larimichthys polyactis were examined and the range of total length (TL) was 12.0~27.5 cm and average total length was 19.6 cm. The most important prey component in the diets of L. polyactis was Pisces that constituted 46.5% in %IRI (Index of relative importance). Euphausiacea was the second largest prey component. The result of analysis in ontogenetic and seasonal changes significantly exhibited. The proportion of Pisces increased as increasing body size, whereas the consumption of Macrura decreased gradually. The diets also were different among seasons, with the difference particularly being evident between warm (summer and autumn) and cold (winter and spring) seasons. Permutational multivariate analysis of variance (PERMANOVA) revealed significant dietary differences by seasons (P=0.001).

전체 418개체의 참조기를 분석하였고, 전장의 범위는 12.0~27.5 cm였으며, 평균 전장은 19.6 cm였다. 참조기의 주먹이생물은 어류로 46.5%의 상대중요도지수비를 차지하였고 그 다음으로 난바다곤쟁이류가 우점하였다. 성장에 따른 먹이생물의 변화에 유의한 차이가 나타났는데, 성장하면서 어류의 섭식율은 증가하지만 새우류의 비율은 감소하였다. 계절적 변화는 여름과 가을의 고수온기와 겨울과 봄의 저수온기와 유의한 차이가 나타났다. 계절적 변화를 다변량분산분석(PERMANOVA)을 통해 분석한 결과, 계절에 따른 유의한 변화가 나타났다.

Keywords

Acknowledgement

이 논문은 2022년 해양수산부 재원으로 해양수산기술진흥원의 지원을 받아 수행된 연구입니다(ICT기반 수산자원관리연구센터).

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