지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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The experiment was performed to evaluate the possibility of utilizing underground sea water for the seed production of tiger puffer, Takifugu rubripes. For this purpose, the effects of 6 different salinities (3.5, 7.0, 14.0, 20.0, 27.0, 33.0‰) were determined based on the hatching rate of fertilized eggs, survival rate and the amount of food consumed by hatched larvae, where as the effects of 3 different salinities (20.0, 27.0, 33.0‰) were also examined with rearing tiger puffer juvenile (4.29±0.50 cm in total length) for 50 days in the closed recirculating water system.
As a results, either the hatching or the survival rate of more than 70.0% were obtained from the fertilized eggs reared at the salinity of 27.0 to 33.0‰, the early hatched larvae at 27.0 to 33.0‰, and the 10-day-old larvae at 20 to 33.0‰.
At three different salinities, the survival rate of 20-day- and 30-day-old larvae turned out to be 89.0% and 92.5%, respectively. The salinity for maximum food intake thus appeared to be from 27.0 to 33.0‰.
In this condition, 20-day-old hatched larvae consumed 323~342 Artemia nauplii and 30-day-old hatched larvae ate 1,559~1,579 A. nauplii. The highest growth rate of fingerlings were observed at the salinity 27‰ and followed by 33.0 and 20.0‰, respectively. The relationship between the days of rearing (X) and the total length (Y) of the fingerlings were as follows :
33.0‰ group : Y=0.107X-2.532 (r=0.982)
27.0‰ group : Y=0.116X-3.195 (r=0.975)
20.0‰ group : Y=0.116X-2.693 (r=0.987)
The slopes of regression line estimated from 27.0‰ and 33.0‰ groups were significantly different from that of 20.0‰ group.
As a results, either the hatching or the survival rate of more than 70.0% were obtained from the fertilized eggs reared at the salinity of 27.0 to 33.0‰, the early hatched larvae at 27.0 to 33.0‰, and the 10-day-old larvae at 20 to 33.0‰.
At three different salinities, the survival rate of 20-day- and 30-day-old larvae turned out to be 89.0% and 92.5%, respectively. The salinity for maximum food intake thus appeared to be from 27.0 to 33.0‰.
In this condition, 20-day-old hatched larvae consumed 323~342 Artemia nauplii and 30-day-old hatched larvae ate 1,559~1,579 A. nauplii. The highest growth rate of fingerlings were observed at the salinity 27‰ and followed by 33.0 and 20.0‰, respectively. The relationship between the days of rearing (X) and the total length (Y) of the fingerlings were as follows :
33.0‰ group : Y=0.107X-2.532 (r=0.982)
27.0‰ group : Y=0.116X-3.195 (r=0.975)
20.0‰ group : Y=0.116X-2.693 (r=0.987)
The slopes of regression line estimated from 27.0‰ and 33.0‰ groups were significantly different from that of 20.0‰ group.
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UCI(KEPA) : I410-ECN-0101-2009-529-015320404