범게, Orithyia sinica(Linnaeus)의 성장과 탈피에 관한 연구

Studies on the Growth and Molting of the Tiger Crab, Orithyia sinica(Linnaeus)

Complete larval development Orithyia sinica(Linnaeus) is composed of three zoeal instars and megalopa. Survival of instars was higher in 20℃ than in ambient temperature. Intermolt period generally increased with the increase of number of instars, but a notable decrease was observed from Crab-5 to prepuerty molt instars(Crab-7). Zoeas and megalopa reared at higher temperature regime were samller than those reared at lower temperature. No temperature effect was shown in the size of crab instars. Growth factors fluctuate with the increase of number of instars, but there was an overall trend of net decrease. Growth factor was 35.65~41.4 % for zoeal instars, and they were 18.00~30.91 % for crab instars.