초록

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Abstract ▼ AI-Helper

From November 1992 to January 1993, the rockfish, Sebastes inermis was reared in the laboratory, and observed the developmental stage of the eggs and larvae squeezed from the parent fish. On December 4 1992, developing eggs at morula stage were obtained from female parent fishes($17.4{\sim}20.3...

From November 1992 to January 1993, the rockfish, Sebastes inermis was reared in the laboratory, and observed the developmental stage of the eggs and larvae squeezed from the parent fish. On December 4 1992, developing eggs at morula stage were obtained from female parent fishes($17.4{\sim}20.3mm$ in total lenght(TL)). The diameter of eggs ranged from 1.20 to 1.35mm(n=50), and oil globules in white color were found in the eggs. Hatching began about 55 hours after morula stage at the water temperature of $9.2{\sim}12.3^{\circ}C$. The newly hatched larvae measured from 2.90 to 3.35mm in TL with $8+12{\sim}13=20{\sim}21$ myomeres. Total lengths of the larvae will be from 5.75 to 6.15mm in 27 and 30 days after the hatching, respectively. Myomere number was $8+17{\sim}18=26$.