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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.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1998.8
- 수록면
- 371 - 380 (10page)
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초록· 키워드
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This study has been conducted to develop the techniques for spat production of the sun and moon scallop from January 1995 to December 1996. With the adult scallops collected from the Sogwipo area, spawning induction and larvae rearing were attempted several times and monthly changes of GSI were also monitored during the experimental period. The results obtained were as follows.
1. GSI started to increase from June and showed the maximum value of 22.17 and 14.98 in female and male respectively in November, and then gradually decreased from December.
2. Spawning induction by heating method turned out to be the most efficient way showing the responding rate of 64.8~91.5%. The responding temperature was 21.4~26.4℃ which was 3.1~8.5℃ increased from the rearing temperature of 16.3~18.3℃. An average number of eggs spawned was 9.2×10^5.
3. The average size of eggs after fertilization was about 72㎛ in diameter. The first polar body discharge, blastula formation, and trochopore larvae appearance occurred 30 mininutes, 18 hours, and 22 hours after fertilization respectively.
4. Settling rates in various collectors were similar one another, whereas pouring larvae in the mesh was the most efficient way for larval settling.
5. The spats grew to be 1mm in their shell length for the first 50 days after fertilization and 9.6mm in 135 days.
6. Correlation between shell length (SL) of the spat and the number of days (X) after spat settlement could be expressed as SL=257.75e^(0.0272X)(r=0.9100).
1. GSI started to increase from June and showed the maximum value of 22.17 and 14.98 in female and male respectively in November, and then gradually decreased from December.
2. Spawning induction by heating method turned out to be the most efficient way showing the responding rate of 64.8~91.5%. The responding temperature was 21.4~26.4℃ which was 3.1~8.5℃ increased from the rearing temperature of 16.3~18.3℃. An average number of eggs spawned was 9.2×10^5.
3. The average size of eggs after fertilization was about 72㎛ in diameter. The first polar body discharge, blastula formation, and trochopore larvae appearance occurred 30 mininutes, 18 hours, and 22 hours after fertilization respectively.
4. Settling rates in various collectors were similar one another, whereas pouring larvae in the mesh was the most efficient way for larval settling.
5. The spats grew to be 1mm in their shell length for the first 50 days after fertilization and 9.6mm in 135 days.
6. Correlation between shell length (SL) of the spat and the number of days (X) after spat settlement could be expressed as SL=257.75e^(0.0272X)(r=0.9100).
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