Goo In Bon, Lim Sang Gu, Han Hyung Kyun, Park In-Seok
Inland Aquaculture Research Center, National Fisheries Research & Development Institute (NFRDI), Jinhae 645-758, Republic of Korea.
Division of Marine Environment and Bioscience, Korea Maritime and Ocean University, Busan 606-791, Republic of Korea.
Dev Reprod. 2014 Mar;18(1):33-41. doi: 10.12717/DR.2014.18.1.033.
We investigated the process of yolk absorption in Korean rose bitterling, Rhodeus uyekii, and determined the changes in its morphometric characteristics. The R. uyekii from 1 days post hatching (DPH) to 21 DPH, the eye diameter (ED) was 5.4 at 5 DPH. Thereafter, the ED/total length (TL) ratio increased to 10.7 at 21 DPH (p<0.05). The yolk length (YL) decreased from 95.4 to 1.1 by 21 DPH, and this rate of decrease was greater than that for any other dimension (p<0.05). 12 morphometric dimensions/TL for the R. uyekii were measured at each sampling day from 21 DPH to 170 DPH. At just hatching, the average TL and BW were 6.1±0.09 mm and 4.9±0.07 mg, respectively. At 53 DPH, the average TL was 12.9±0.28 mm and the average BW was 14.7±0.72 mg; the total length growth equation was TL=5.507e(0.038t) (R (2)=0.916). Further, the body weight growth equation was BW=3.3647e(0.0296t) (R (2)=0.9354). The dimensions with regard to body depth showed the greatest growth rates in the external characteristics of the fish (p<0.05). The patterns of the morphometric characteristics measured in this study can be classified in three ways. The patterns were shown to be increased (y=0.0992x+ 12.07, R (2)=0.8333), decreased (y=-0.0569x+42.029, R (2)=0.8395) or maintained (y=0.005x+18.263, R (2)=0.3678) from 21 DPH to 170. These results will provide useful indices for the successful rearing of the R. uyekii.
我们研究了韩国玫瑰无须鲃（Rhodeus uyekii）的卵黄吸收过程，并确定了其形态特征的变化。韩国玫瑰无须鲃从孵化后1天（DPH）到21 DPH，5 DPH时眼径（ED）为5.4。此后，到21 DPH时ED/全长（TL）比值增至10.7（p<0.05）。到21 DPH时，卵黄长度（YL）从95.4降至1.1，且该下降速率大于其他任何维度的下降速率（p<0.05）。从21 DPH到170 DPH的每个采样日，对韩国玫瑰无须鲃的12个形态维度/TL进行了测量。刚孵化时，平均TL和体重（BW）分别为6.1±0.09毫米和4.9±0.07毫克。在53 DPH时，平均TL为12.9±0.28毫米，平均BW为14.7±0.72毫克；全长生长方程为TL = 5.507e(0.038t)（R(2)=0.916）。此外，体重生长方程为BW = 3.3647e(0.0296t)（R(2)=0.9354）。关于体深的维度在鱼的外部特征中显示出最大的生长速率（p<0.05）。本研究中测量的形态特征模式可分为三种方式。从21 DPH到170，这些模式显示为增加（y = 0.0992x + 12.07，R(2)=0.8333）、减少（y = -0.0569x + 42.029，R(2)=0.8395）或保持（y = 0.005x + 18.263，R(2)=0.3678）。这些结果将为韩国玫瑰无须鲃的成功养殖提供有用的指标。
