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박두신(Du Shin Park),염동혁(Dong Hyuk Yeom),최신석(Shin Sok Choi) 한국환경생물학회 1998 환경생물 : 환경생물학회지 Vol.16 No.3
This study was carried out to observe early life stage of venus fish (Aphyocypris chinensis GU‥NTHER). The fertilized egg is spherical, adhesive, 1.00±0.05㎜ and light yellow. At 20±1℃, blastodisc was formed 20 minutes after fertilization, and devided into two cells 45 minutes later. Blastula stages were observed five hours five minutes and eight hours after fertilization and Gastrula Begining of embryonic development was observed in 14 hours. Optic vesicle and 3∼4 somites were observed in 16 hours, and 2 hours later optic lens as well as auditory vesicles were formed. Heart beating and tail movement started about 30 hours, hatching began about 56 hours. The newly hatched larvae possess yolk sac and their average length was 3.43±0.062㎜. Aphyocypris chinensis used yolk sac in 4 days and juvenile characters began to appear in 30 days after hatching.