환경생물 (Korean Journal of Environmental Biology)

  • 제24권2호
  • /
  • Pages.138-146
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  • 2006
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  • 1226-9999(pISSN)
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  • 2287-7851(eISSN)
한국환경생물학회 (Korean Society of Environmental Biology)
권호 표지

통영 바다목장 자원조성을 위한 연구 II. 야간점등과 먹이공급 조건에 따른 볼락의 성장과 위내용물 변화

Study on Resources Annexation in Tongyeong Marine Ranching II. Change of Growth and Stomach Contents on Night-lights and Feeding Condition of Black Rockfish Sebastes inermis

  • 윤호섭 (전남대학교 해양학과) ;
  • 최상덕 (전남대학교 수산해양대학 양식생물학)
  • Yoon, Ho-Seop (Department of Oceanography, Chonnam National University) ;
  • Choi, Sang-Duk (Aquaculture Program, Fisheries and Ocean Science, Chonnam National University)
  • 발행 : 2006.06.01
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초록

위 내용물 분석을 위하여 경남 통영시 바다목장 해역내 한국해양연구원 가두리 설치 지역에서 2004년 7월부터 8월까지 채집을 실시하였으며, 분석에 사용된 볼락은 점등, 비점등 총 200개체였다. 점등에 의해 유집된 동물플랑크톤중 볼락의 가장 중요한 먹이생물은 요각류(Copepoda), 단각류(Amphipoda)순으로 나타났으며, 비점등구간에서도 역시 요각류(Copepoda), 단각류(Amphipoda)순으로 나타났다. 계절에 따른 먹이조성의 변화를 살펴보면 점등구간의 경우 비점등구간에 비해 비교적 다양한 먹이생물을 고루 섭이하였으며, 특히 점등에 의해 요각류와 단각류의 출현량이 많아 중간육성 기간중 볼락의 위내용물 중 이들이 차지하는 비율이 비교적 높았으며, 비점등구에서는 전조사기간중 요각류의 출현량이 대부분을 차지하였다. 중간육성 기간중 점등, 비점등구간에서 먹이공급 조건에 따른 성장관계를 살펴보면 동일한 조건에서 비점등구에 비해 점등구에서 사육한 볼락의 성장이 양호한 것으로 나타났다.

The effects of night-lights on feeding by the black rockfish Sebastes inermis in the cage of the Tongyeong marine ranching area were investigated by analyzing the stomach contents of 200 individuals from July 2004 to August 2004. In night-lights groups, black rockfish consumed mainly copepoda, amphipoda and polychaeta; also those in control area fed on copepods, amphipods and polychaets. Copepods (57%) and amphipods (32%) were the major prey organisms for all study period in night-lights. While, major prey items in control area were copepods (88%). Growth of the black rockfish reared in night-lights conditions were significantly higher than that of those in control area.

키워드

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