Han Hyoung Kyun, Lim Sang Gu, Kang Jung Ha, Choi Jae Wook, Gil Hyun Woo, Cho Sung Hwoan, Lim Sun-Young, Park In-Seok
Inland Aquaculture Research Center, National Fisheries Research & Development Institute, Jinhae 645-758, Republic of Korea.
Biotechnology Research Division, National Fisheries Research & Development Institute, Busan 619-705, Republic of Korea.
Dev Reprod. 2013 Sep;17(3):187-98. doi: 10.12717/DR.2013.17.3.187.
In this study, we measured the morphometric and histological changes in the cyprinid loach, Misgurnus anguillicaudatus, during the early period of growth. Eyes, yolk length, yolk height, and yolk volume of the larva decreased for 16 days post hatching (DPH) (P<0.05). During 60 DPH (P>0.05), the most anterior extension of the head × the posterior end of the supraoccipital, the most anterior extension of the head × the origin of the dorsal fin, the most anterior extension of the head × the origin of the pectoral fin, the posterior end of the supraoccipital × the origin of the pelvic fin, and the origin of the dorsal fin × the ventral origin of the caudal fin gradually decreased, whereas the most anterior extension of the head × the dorsal origin of the caudal fin, the origin of the dorsal fin × the origin of the anal fin, the origin of the dorsal fin × the origin of the pectoral fin, and the insertion of the dorsal fin × the origin of the pelvic fin gradually increased (P<0.05). In the cyprinid loach, the retina is composed of six layers: the epithelial layer, ganglion cell layer, inner nuclear layer, inner plexiform layer, outer limiting membrane, and rod and cone layer (RCL). After hatching, part of the RCL gradually increased in density. The kidney and midgut epithelium were already formed in the cyprinid loach just after hatching and grew gradually in subsequent days.
在本研究中，我们测量了鲤科泥鳅（Misgurnus anguillicaudatus）生长早期的形态学和组织学变化。孵化后16天（DPH）内，幼虫的眼睛、卵黄长度、卵黄高度和卵黄体积均减小（P<0.05）。在60 DPH期间（P>0.05），头部最前端×上枕骨后端、头部最前端×背鳍起点、头部最前端×胸鳍起点、上枕骨后端×腹鳍起点以及背鳍起点×尾鳍腹侧起点逐渐减小，而头部最前端×尾鳍背侧起点、背鳍起点×臀鳍起点、背鳍起点×胸鳍起点以及背鳍插入点×腹鳍起点逐渐增加（P<0.05）。在鲤科泥鳅中，视网膜由六层组成：上皮层、神经节细胞层、内核层、内网层、外限制膜以及视杆和视锥层（RCL）。孵化后，RCL的部分密度逐渐增加。鲤科泥鳅刚孵化后肾脏和中肠上皮就已形成，并在随后的日子里逐渐生长。
