지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1994.11
- 수록면
- 189 - 205 (17page)
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초록· 키워드
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Formerly, adult-tiger puffer, Takifugu rubripes with ova caught in the sea, were used for seedling production. But it was difficult to secure naturally-ripened adults.
For the purpose of adult tiger puffer in captivity, this study was carried out. To determine the growth 220 tiger puffers hatched in 1990 (3-year-old) and 1991 (2-year-old) were used. For spawning and egg incubation leading to fry development, eggs were stripped from tiger puffers hatched in 1988 (5-year-old) and 1990 (3-year-old) through human chorionic gonadotropin (HCG) treatments.
In May, 1993, mean body length and mean body weight of 2-year-old tiger puffer were 30.72±1.35 cm and 1,048±228 g, and that of 3-year-old tiger puffers were 36.02±1.17 cm and 1,402±66 g respectively. The relationship between body length (L) and body weight (W) of 2-year-old the tiger puffers during the experiment period was represented as W = 1.7892L^(3.1524) × 10^(-5) (r= 0.9436) and that of 3-year-old, W= 3.2840L^(3.6099)× 10^(-6) (r= 0.9070) respectively.
The GSI in female 2-year-old-fish changed from 0.23±0.12 to 0.74±0.08, during the experiment period, and in male it didn't change remarkably until November, but thereafter it increased and showed a peak of 8.69±5.09. The GSI of 3-year-old-fish showed a peak of 8.05±5.58 in April in female and 12.65±4.60 in May in male.
The change of HSI in 3-year-old-fish was correlative to the change of GSI, but in 2-year-old-fish it was little correlative.
In female gonad of 2-year-old tiger puffer, the mature oocytes reached 350 ㎛ in April, but thereafter they didn't spawn and became atrophied. But in male gonad, a great number of spermatozoa were crowded in the testicular lobuli in April.
Female gonad of 3-year-old tiger puffer had the mature oocytes of 650 ㎛ in March and the ripe oocytes, 900 ㎛ in April. Male testis development was similar to that of 2-year-old-fish.
Egg-stripping after hormone treatments was possible past 139 hours and 142 hours from each of two 5-year-old-fish (500 IU/kg, BW), and after 114 hour from a 3-year-old-fish (1,000 IU/kg, BW) under water temperature 16.3~17.8℃. Eggs stripped amounted was 650 g and 400 g from two 5-year-old-fish and 610 g from the 3-year-old-fish, and fertilization rates were 98.0%, 97.4% and 96.5% respectively. All the hatched larvae devloped into normal fry.
For the purpose of adult tiger puffer in captivity, this study was carried out. To determine the growth 220 tiger puffers hatched in 1990 (3-year-old) and 1991 (2-year-old) were used. For spawning and egg incubation leading to fry development, eggs were stripped from tiger puffers hatched in 1988 (5-year-old) and 1990 (3-year-old) through human chorionic gonadotropin (HCG) treatments.
In May, 1993, mean body length and mean body weight of 2-year-old tiger puffer were 30.72±1.35 cm and 1,048±228 g, and that of 3-year-old tiger puffers were 36.02±1.17 cm and 1,402±66 g respectively. The relationship between body length (L) and body weight (W) of 2-year-old the tiger puffers during the experiment period was represented as W = 1.7892L^(3.1524) × 10^(-5) (r= 0.9436) and that of 3-year-old, W= 3.2840L^(3.6099)× 10^(-6) (r= 0.9070) respectively.
The GSI in female 2-year-old-fish changed from 0.23±0.12 to 0.74±0.08, during the experiment period, and in male it didn't change remarkably until November, but thereafter it increased and showed a peak of 8.69±5.09. The GSI of 3-year-old-fish showed a peak of 8.05±5.58 in April in female and 12.65±4.60 in May in male.
The change of HSI in 3-year-old-fish was correlative to the change of GSI, but in 2-year-old-fish it was little correlative.
In female gonad of 2-year-old tiger puffer, the mature oocytes reached 350 ㎛ in April, but thereafter they didn't spawn and became atrophied. But in male gonad, a great number of spermatozoa were crowded in the testicular lobuli in April.
Female gonad of 3-year-old tiger puffer had the mature oocytes of 650 ㎛ in March and the ripe oocytes, 900 ㎛ in April. Male testis development was similar to that of 2-year-old-fish.
Egg-stripping after hormone treatments was possible past 139 hours and 142 hours from each of two 5-year-old-fish (500 IU/kg, BW), and after 114 hour from a 3-year-old-fish (1,000 IU/kg, BW) under water temperature 16.3~17.8℃. Eggs stripped amounted was 650 g and 400 g from two 5-year-old-fish and 610 g from the 3-year-old-fish, and fertilization rates were 98.0%, 97.4% and 96.5% respectively. All the hatched larvae devloped into normal fry.
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