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Effects of Various Stimulants on Spawning Induction and Early Development at Different Water Temperatures in the Noble Scallop  

원승환 (국립수산과학원 남해수산연구소 북제주수산종묘시험장)
한석중 (국립수산과학원 남해수산연구소 북제주수산종묘시험장)
Publication Information
Journal of Aquaculture / v.17, no.2, 2004 , pp. 97-102 More about this Journal
Abstract
We examined the effects of stimulants including sunlight and UV-irradiation on the spawning induction and early development of the noble scallop, Chlamys nobilis. The sunlight stimulation resulted in nuch faster spawning induction (100% success within 40 minutes) compared to UV-irradiation (100% success within 70 minutes). Early development of the scallop larva took place between 15$^{\circ}C$ to 3$0^{\circ}C$. The time to reach the early D-shaped stage was 63.5, 31.5, 18.5 and 17.0 hours at 15, 20, 25 and 3$0^{\circ}C$, respectively. The correlations between the water temperature-(WT) regimes and the time (t) required for each developmental stage are as follows. 2 cell stage: 1/t=0.0606WT-0.6194 ($r^2$=0.9791) 8 cell stage: 1/t=0.0304WT-0.3453 ($r^2$=0.9941) Morula: 1/t=0.0100WT-0.1049 ($r^2$=0.9663) Trochophore: 1/t=0.0058WT-0.0618 ($r^2$=0.9848) D-shaped larva: 1/t=0.0030WT-0.0282 ($r^2$=0.9731) These correlations indicated that the biological minimum temperature of the species is around 10.44$^{\circ}C$. The highest survival rate up to D-shaped larva at different water temperature was observed at $25^{\circ}C$.
Keywords
Noble scallop; Chlamys nobilis; Spawning stimulation; Egg development;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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