한국어류학회지 (Korean Journal of Ichthyology)

  • 제29권2호
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  • Pages.124-129
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  • 2017
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  • 1225-8598(pISSN)
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  • 2288-3371(eISSN)
한국어류학회 (The Ichthyological Society of Korea)
권호 표지

소양호에 서식하는 쏘가리(Siniperca scherzeri)의 섭식특징

Studies on the Feeding Habits of Mandarin Fish, Siniperca scherzeri in the Soyang Lake, Korea

  • 송미영 (국립수산과학원 중앙내수면연구소) ;
  • 김승용 (국립수산과학원 중앙내수면연구소) ;
  • 홍양기 (국립수산과학원 중앙내수면연구소) ;
  • 이완옥 (국립수산과학원 중앙내수면연구소)
  • Song, Mi-Young (Inland Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Kim, Seung-Yong (Inland Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Hong, Yang-Ki (Inland Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Lee, Wan-Ok (Inland Fisheries Research Institute, National Institute of Fisheries Science)
  • 투고 : 2017.04.05
  • 심사 : 2017.06.09
  • 발행 : 2017.06.30
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초록

2014년 4월부터 11월까지 한강 수계인 소양호에서 자망으로 채집한 쏘가리(Siniperca scherzeri) 332개체의 식성을 조사하였다. 조사한 쏘가리의 체장은 107~321 mm의 범위였으며, 135개체는 공복상태였다. 쏘가리는 주로 어류와 새우류를 섭식하였다. 가장 중요한 먹이생물로 어류인 빙어의 섭식비율이 가장 높았고, 새우류는 징거미새우의 섭식비율이 높았다. 먹이생물 중 어류 비율은 쏘가리의 체장이 커질수록 증가하였으며, 계절별로는 6, 7, 10월을 제외하고 높았다. 소양호 상 중류지역보다 하류지역에서 어류의 섭식비율이 약간 높았다.

The feeding habits of the Siniperca scherzeri were studied using 332 specimens collected by trammel net in the Soyang Lake of Han River, from April to November 2014. Of 332 specimens, 197 contained food and 135 were empty. The standard length of individuals used in this study ranged from 107 to 321 mm. Mandarin fish mainly consumed fishes and shrimps. The main food items of fishes and shrimps were Hypomesus nipponensis and Macrobrachium nipponense. The proportion of fishes in prey items increased with increasing mandarin fish length, however shrimps decreased with growth. The seasonal difference were apparent, fishes were taken mainly all the seasons except June, July and October. There were higher rates of fishes for food items in downstream areas than in the upper and middle areas of the Soyang Lake.

키워드

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