条石鲷早期鳞被的形成和初生鳞的发育  

Early development of squamation for Oplegnathus fasciatus

作　　者：区又君[1] 李加儿[1] 艾丽[1,2] 王雯[1,2] 李刘冬[1] 

机构地区：[1]中国水产科学研究院南海水产研究所,农业部南海渔业资源开发利用重点实验室,广东广州510300 [2]上海海洋大学水产与生命学院,上海201306

出　　处：《南方水产科学》2016年第5期112-117,共6页South China Fisheries Science

基　　金：广东省省级科技计划项目(2016A020206002);广东省海洋渔业科技推广专项(A200901D01);中国水产科学研究院水产种质资源与养殖技术重点开放实验室基金课题(2007A014)

摘　　要：采用茜素红染色法对条石鲷（Oplegnathus fasciatus）早期发育阶段鳞片的形成和发育过程进行了观察和测量。结果显示条石鲷鳞片的起始中心有3个,分别是鳃盖后缘、侧线上方和尾柄处。在水温为24-27℃的人工培育条件下,20日龄在这3个起始中心最早出现鳞片,鳃盖后缘至胸鳍基部的鳞被向上下前后扩展,胸鳍后缘的侧线上方鳞被向下和向前后扩展,尾柄处的鳞被前后扩展,头顶部的鳞被向四周扩展,到40日龄时鱼体全身被鳞进入幼鱼期。通过观察还发现,鳞片向下方发育的速度快于上方,上下方向的发育速度快于前后方向。向前扩展到鳃盖后暂停,向后发育到达尾柄末端,最后出现鳞片的部位是鳃盖。条石鲷鳞片为栉鳞,较细小。在鱼体的同一时期同一部位,鳞片的大小存在较大的差异。初生鳞鳞嵴（环片）数目与发育阶段的关系可用二次方程表示。This paper studies the scale formation at early developmental stages of Oplegnathus fasciatus by using Alizarin red staining method. The fish have three scale starting centers,including the posterior margin of gill cover,above side of lateral line and the caudal peduncle. At rearing water temperatures of 24 - 27 ℃,primary scales appeared first in these three starting centers at 20 thday.Scales originated from back edge of operculum to pectoral fin base toward upward and downward as well as before and after expansion;scales originated above lateral line on back edge of pectoral fin expanded downward and forward and backward,and those originated from caudal peduncle in front and rear extension. The scales on the top of head extended to periphery. At 40 thday,the whole body surface was covered by scales,coming into young fish stage. The development of scales extending to lower area of the body surface was faster than that in the upper area surface,and extension in upper and lower direction was faster than that to direction before and after.Expansion paused after extending to the operculum,backward to the end of caudal peduncle,and the last part of scales coverage was operculum. Scales of O. fasciatus belonged to ctenoid scale type with smaller size. The sizes of scales were very different in the same area at the same developmental stage. Ridge number on primary scale in relation to developmental stages of O. fasciatus could be expressed by quadratic equation.

关 键 词：条石鲷 鳞被形成 初生鳞 发育 

分 类 号：S965.222[农业科学—水产养殖]