Food Habits of the Yellow Goosefish, Lophius litulon

황아귀, Lophius litulon의 식성

  • CHA Byung-Yul (South Sea Fisheries Research Institute, National Fisheries Research and Development Agency) ;
  • HONG Byung-Que (South Sea Fisheries Research Institute, National Fisheries Research and Development Agency) ;
  • JO Hyun-Su (South Sea Fisheries Research Institute, National Fisheries Research and Development Agency) ;
  • SOHN Haw-Son (South Sea Fisheries Research Institute, National Fisheries Research and Development Agency) ;
  • PARK Yeong-Chyl (West Sea Fisheries Research institute, National Fisheries Research and Development Agony) ;
  • YANG Won-Seok (National Fisheries Research and Development Agency) ;
  • CHOI Ok-In (National Fisheries Research and Development Agency)
  • 차병열 (국립수산진흥원 남해수산연구소) ;
  • 홍병규 (국립수산진흥원 남해수산연구소) ;
  • 조현수 (국립수산진흥원 남해수산연구소) ;
  • 손호선 (국립수산진흥원 남해수산연구소) ;
  • 박영철 (국립수산진흥원 서해수산연구소) ;
  • 양원석 (국립수산진흥원 원양자원과) ;
  • 최옥인 (남해수산연구소 목포분소)
  • Published : 1997.01.01

Abstract

Stomach contents of 518 specimens of the yellow goosefish, Lophius litulon caught by the off-shore stownet in the southern waters of Korea were examined by means of the calculation of the frequency of occurrence number and weight percentages, and index of relative importance (IRI) in each prey organisms. Prey organisms of the yellow goosefish consist of fishes, crustaceans, cephalopods. Fishes were dominant prey group, and occupied $98.8\%$ in IRI of prey organisms. Four species of fish, Pseudosciaena manchurica Collichthys niveatus, Engraulis japonica, Trichiurus lepturus were dominant as to the IRI and occupied $87.2\%$ of the total IRI. P. manchurica was a dominant prey organism in predator's stomach through the year, and the other dominant prey organisms occurred intermittently with seasonal progress. P. manchurica was a dominant prey organism to all fish size, too. C. niveatus and E. japonica decreased in importance in the diet as the fish size increased concomitant with an increase in importance of T. lepturus. Mean species number and mean individual number of prey organisms increased with the fish size.

한국남해에 서식하는 황아귀의 위내용물 조사를 위하여 1995년 1월부터 12월까지 어획된 어획물 518개체를 분석한 결과는 다음과 같다. 황아귀는 어류 44종, 갑각류 12종, 두족류 3종등 총 59종의 먹이생물을 섭이하였으며, 이중에서 어류가 상대중요도지수에서 $98.8\%$를 차지하여 가장 많이 섭이된 먹이분류군으로 나타났다. 우점하는 먹이생물로는 참조기, 눈강달이, 갈치, 멸치 등이었으며, 그 외 먹이생물은 소량으로 나타났다. 참조기는 거의 연중 출현하는 우점먹이종이며, 나머지 먹이생물들은 계절의 진행에 따라 간헐적으로 위내용물에 출현하였다. 황아귀는 성장하면서 섭이하는 먹이어종수 및 먹이개체수는 증가하였으며, 우점먹이종 중 눈강달이와 멸치는 황아귀의 체장이 증가하면서 섭이비율은 감소하나 상대적으로 체장이 큰 갈치는 오히려 증가하는 양상을 나타내었다.

Keywords