1. 남해안 주요 가두리양식장 실태조사 가. 여수연안 가두리양식장 실태조사 및 환경조사 나 통영연안 가두리양식장 실태조사 및 환경조사 2. 남해안 가두리양식장 돔류의 폐사원인 구명 가. 병리학적, 생화학적 조사 나. 해양환경 및 기상변화 분석 3. 전남, 경남지역 돔류 월동장 적지조사 4 돔류의 월동사육시험 및 가두리양식장 환경조사 가. 여수연안 주요 가두리양식장 환경조사 나. 월동장과 비월동장 가두리 사육시험 다. 실내 가온사육 효과 시험 5. 돔류 에너지 함량별 월동사육
1. 남해안 주요 가두리양식장 실태조사 가. 여수연안 가두리양식장 실태조사 및 환경조사 나 통영연안 가두리양식장 실태조사 및 환경조사 2. 남해안 가두리양식장 돔류의 폐사원인 구명 가. 병리학적, 생화학적 조사 나. 해양환경 및 기상변화 분석 3. 전남, 경남지역 돔류 월동장 적지조사 4 돔류의 월동사육시험 및 가두리양식장 환경조사 가. 여수연안 주요 가두리양식장 환경조사 나. 월동장과 비월동장 가두리 사육시험 다. 실내 가온사육 효과 시험 5. 돔류 에너지 함량별 월동사육 및 면역력 특성 조사 가 지질함량에 따른 돔류의 월동사육 실험 및 면역력 조사 나. 수온하강에 따른 참돔과 감성돔의 혈액학적 분석 6. 남해안 주요 양식 돔류 및 양식대상종 탐색 7. 남해안 가두리양식장 돔류의 경제성 분석 가 월동장과 비 월동장의 돔류의 경제성 검토 나 통영과 여수에서 돔류의 경제성 검토 8 월동시 돔류의 생리학적 특성 연구 가. 돔류의 저수온 내성 특성 나. 저수온기 돔류의 생리학적 특성 다. 저수온에 노출된 돔류의 회복능력
Abstract▼
1. Investigation of net-cage aquafarm of Yeosu coastal The total area of net-cage culture ground in Yeosu was 198 ha of 62 points in 2006, the number of fisher families were 520. The quantity of cultured fishes were 11,85 million fish in November 2006, the cultured sea bream was 303 million fish
1. Investigation of net-cage aquafarm of Yeosu coastal The total area of net-cage culture ground in Yeosu was 198 ha of 62 points in 2006, the number of fisher families were 520. The quantity of cultured fishes were 11,85 million fish in November 2006, the cultured sea bream was 303 million fish and took 26% in the total quantity. Most of the fisher's net-cage aquafarm had the little size which were amount 0.3~0.5 ha and most of them worked for the fish villages or the fisheries society. The material of net-cage were wood, anti-wave materials and wood+anti-wave materials, the wood was most used as the net-cage material. The study in Yeosu was carried on in the ordinary year of perish of sea bream from November 2006 to May, 2007, and the lower water temperature of inland sea were below than 8$^{\circ}C$, and there was almost had not very low water temperatures appeared and the death rate of sea bream were also low. But in the stage after the extermination of disease of Alella macrotrochelus and Benedenia seriolae and four month before the strength recovery after winter, the number of sea bream transfer from Ando (Yiyapo) to culture ground which located in the inland sea was decreased from 1.5 million to 150 thousand, the survival rate was 10%. The period of the water temperature lower than 8$^{\circ}C$ during Jan. to February 2008 was longer than the same time in 2007. The winter survival rate of Acanthopagrus schlegelii of one which cultured in high density (5 mx5 mx5 m /30,000 fish) of the investigated 6 net-cage culture ground was 20%, and the survival rates of other 5 points were 60%. In the area of Jangji, the survival rate of two-year old Acanthopagrus schlegelii was 90% contrasted to the one-year old ones, and in the area of Ando, the survival rate of one-year old Acanthopagrus schlegelii was 90% in contrasted to the Jangii area. The Acanthopagrus schlegelii cultured in the net-cage culture ground located in the lower part of Gamak bay were stoped to be feed after the water temperature dropped to about $16^{\circ}C$ in about first to middle November so the fish weight were decreased about 9.3~12.8%, contrasted to the Acanthopagrus schlegelii cultured in the net-cage culture ground located in Ando and Geomundo at where the fish were feed once to twice one week and nce were feed 1/2~1/3, the fish cultured in these areas had the growth rate about 10~12% even in the winter. During the investigation, the range of water temperature were 8.4~20.1$^{\circ}C$, and the average water temperature was $7.8^{\circ}C$ in Songdo, Gunnea, Dolsan, in Feb. 2008. The results of disease causes investigation shows that Alella macrotrachelus and Dactylogyrus sp. were parasitic on the gill of Acanthopagrus schlegelii, and Bivagina tai was parasitic on Pagrus major. In the unfeed period from November the disease of green liver syndrome happended on most of the cultured fishes. The reason of the disease was that the lacked of nutrition and short of the apply of protein in the long unfeed period, contrast to this, there were foreign materials were discovered in stomach and intestine of fishes cultured at Ando and Geomundo. We can tell form this that even in low water temperatures, the digestion of feed was discovered in the stomach of fishes, so, the unfeed method in the low water temperatures was not fitness, and the fishes must of feeding even in the low water temperature period. During the water temperature rising period from Apr. to May, most of the ones of cultured fishes which stored fat in their abdomen because of the over feed were died.
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