Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Feeding Habits of Syngnathus schlegeli in Eelgrass (Zostera marina) Bed in Kwangyang Bay

광양만 잘피밭에 서식하는 실고기 (Syngnathus schlegeli)의 식성

  • HUH Sung-Hoi (Department of Oceanography, Pukyong National University) ;
  • KWAK Seok Nam (Department of Oceanography, Pukyong National University)
  • Published : 1997.09.01
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Abstract

Feeding habits of Syngnathus schlegeli were studied by using samples collected from the eelgrass bed in Kwangyang Bay, Korea from January 1994 to December 1994. Syngnathus schlegeli was a carnivore which mainly consumed copepods and epiphytal gammarid amphipods. Its diets included small quantities of caprellid amphipods, tanaids and mysids. It showed ontogenetic changes in feeding habits. In its initial feeding stage, copepods were major food organisms. However, gammarid amphipods were heavily selected with the incretment of the fish size. Food availability in the eelgrass bed changed seasonally. Its main food items were changed according to variations of food availability. Copepods were mainly consumed in spring, and gammarid amphipods in summer and fall.

1994년 1월부터 1994년 12월까지 광양만 대도주변 잘피밭에서 채집된 실고기의 식성을 조사하였다. 실고기는 요각류 (Copepoda)와 잘피의 엽상체에 부착하여 서식하는 단각류 (Amphipoda)의 일종인 옆새우류 (Gammaridea)를 주로 섭이하였으며, 그 외, 카프렐라류 (Caprellidea), 주걱벌레붙이류 (Tanaidacea), 곤쟁이류 (Mysidacea) 등을 소량 섭이하였다. 실고기는 성장함에 따라 섭이된 먹이생물 조성의 변동이 뚜렷하였다. 어린 실고기는 요각류를 주로 섭이하였으나, 체장이 증가하면서 옆새우류를 주로 섭이하였다. 먹이생물의 조성은 계절에 따라 변화되었는데, 봄철에는 요각류가, 여름철과 가을철에는 옆새우류가 주로 섭이되었다.

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