한국양식학회지 (Journal of Aquaculture)

한국양식학회 (The Korean Society of Fisheries and Aquatic Science)
권호 표지

해만가리비 Argopecten irradians 양식시 성장에 미치는 치패의 선발 효과

Effect of Selected Spat on Growth of Bay Scallop (Argopecten irradians) During Aquaculture

  • 오봉세 (국립수산과학원 여수수산종묘시험장) ;
  • 양문호 (국립수산과학원 남해수산종묘시험장) ;
  • 정춘구 (국립수산과학원 양식환경연구소) ;
  • 김주일 (국립수산과학원 자원관리과) ;
  • 김영숙 (국립수산과학원 포항분소) ;
  • 김숙양 (국립수산과학원 유해생물과)
  • 발행 : 2002.08.01
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초록

사육기간 중 수온은 12.6~24.5$^{\circ}C$ 였고, 염분은 27.32~33.10 $\textperthousand$, 용존산소는 7.05mg/L이상으로 양호한 수질상태를 보였다. 6~9월 해만가리비 성장기에 식물플랑크톤의 우점종은 편모조류인 Ceratium sp.가 35.2% 출현하였다. 플랑크톤의 밀도는 대체적으로 8~9월에 낮았고, 6월과 10월에 높았으며, chlorophyll-a는 1.69~7.40 $\mu\textrm{g}$/L 였다. 해만가라비 치패의 선발에 따른 성장차이를 알아보기 위하여 선발시험구(평균각고 21.47${\pm}$0.80 mm)와 비교시험구(평균각고 16.59${\pm}$0.99 mm)를 조성하여 185일간 사육한 결과, 각고는 선발시험구 0.17 mm/day, 비교시험구 0.19 mm/day 였고, 전중량은 선발시험구 0.17 g/day, 비교시험구 0.16 g/day 였다. 각고의 일간성장률은 선발시험구 0.487%, 비교시험구 0.606%였고, 전중량의 일간성장률은 선발시험구 1.600% 및 비교시험구 1.972%였다. von Bertalanffy성장모델에 의해 얻어진 각고의 최대 예상값은 54.08 mm(선발시험구) 및 52.62 mm(비교시험구)였다. 생존율은 선발구는 80.0%, 비교시험구는 87.0%의 생존율을 보였다. 선발시험구의 치패는 상품크기인 평균각고 5 cm이상으로 성장하는데 3개월이 소요되어 비교시험구보다 1개월 단축되었으나, 12월까지 계속 사육시에는 가리비류에서 나타나는 보상성장(compensatory growth) 효과가 나타나 양 시험구간의 성장차이에 유의차가 없었다.

In Nam-myeon coastal area of southern sea, Korea, the following hydrobiological conditions prevailed during 1997: water temperature: 12.6 ~24.5 $^{\circ}C$ ; Salinity: 27.32 ~33.$10 \textperthousand$, Dissolved oxygen: 7.05 $ml/L$ and Chlorophyll a: 1.69 ~ 7.40 $\mu $/L. Phytoplankton, dominated by Ceratium sp, peaked during June-July. Mean growth rates of the bay scallop of selected and non-selected groups cultured for 185 days in this area from July to December, 1997 were 0.17 and 0.19 mm/day for shell height, and 0.17 and 0.16 g/day for total weight, respectively. Maximum predicted values of shell height, calculated by von Bertalanffy growth model, were 54.98 mm for the selected and 52.62 mm for the non-selected groups. Survival of the selected and non-selected groups was 80.0 and 87.0%, respectively.

키워드

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