Park Jae-Min, Cho Seong-Jang, Han Kyeong-Ho
Gyeongsangbuk-Do Native Fish Business Center, Uiseong 37366, Korea.
Boryeong Freshwater Eco Center, Boryeong 33416, Korea.
Dev Reprod. 2020 Dec;24(4):307-316. doi: 10.12717/DR.2020.24.4.307. Epub 2020 Dec 31.
The purpose of this study is to observe the early life history of Korean and use the result as basic taxonomic research data for balitorid fish. The fertilized eggs were light green color with completely circle shape and mean size was 1.21±0.06 mm (n=30). Immediately after hatching, the size of the larvae was 2.81±0.11 mm (n=5) in mean length, with egg yolk. On the 3rd day after hatching, the preflexion larvae had a mean length of 4.64±0.09 mm (n=5), and their mouth was opened to start feeding. On the 8th day after hatching, a mean length of the postflexion larvae was 9.43±0.46 mm (n=5), the distal part of the notochord was bent to 45°, and 16 fin rays were developed on the caudal fin. On the 31st day after hatching, a mean length of juveniles was 22.3±0.85 mm (n=5), and the number of fin rays was the same as that of adult fish with (iv8) dorsal fins and (iii8) anal fins.
本研究的目的是观察韩国产[鱼丹]的早期生活史，并将结果用作平鳍鳅科鱼类基础分类研究的数据。受精卵呈浅绿色，形状完全圆形，平均大小为1.21±0.06毫米（n = 30）。孵化后立即观察，仔鱼平均体长2.81±0.11毫米（n = 5），带有卵黄。孵化后第3天，前弯曲期仔鱼平均体长4.64±0.09毫米（n = 5），其口张开开始摄食。孵化后第8天，后弯曲期仔鱼平均体长9.43±0.46毫米（n = 5），脊索远端弯曲45°，尾鳍上发育出16根鳍条。孵化后第31天，幼鱼平均体长22.3±0.85毫米（n = 5），鳍条数与成鱼相同，背鳍为（iv8），臀鳍为（iii8）。
