滦河水系马口鱼胚胎及仔鱼发育观察  

The observation of embryonic and larval developmentof Opsariichthys bidens in Luanhe River system

作　　者：于琪 高晓田 任雪莲 王国栋 夏中慧 YU Qi;GAO Xiaotian;REN Xuelian;WANG Guodong;XIA Zhonghui(Hebei Ocean and Fisheries Science Research Institute,Qinhuangdao 066200,China;Hebei Key Laboratory of Marine Biological Resources and Environment,Qinhuangdao 066200,China;Renqiu Aquatic Technology Service Station,Renqiu 062250,China;Agricultural and Rural Bureau of Xinglong County,Chengde 067399,China)

机构地区：[1]河北省海洋与水产科学研究院,河北秦皇岛066200 [2]河北省海洋生物资源与环境重点实验室,河北秦皇岛066200 [3]任丘市水产工作服务站,河北沧州062550 [4]承德市兴隆县农业农村局,河北承德067399

出　　处：《河北渔业》2024年第10期1-6,F0003,共7页

摘　　要：为了解滦河水系马口鱼(Opsariichthys bidens)胚胎和仔鱼发育情况,对其胚胎和仔鱼发育开展了系统观察。结果显示:马口鱼卵圆球形,颜色黄或深黄,沉性,卵径1.2~1.4 mm,吸水后卵径1.4~1.6 mm。孵化水温19~22℃的条件下,经历胚盘形成期、卵裂期、囊胚期、原肠胚期、神经胚期、器官形成期和出膜期7个阶段,历时50 h 46 min孵化出膜,所需积温1054.90℃·h。培育水温22~25℃条件下,仔鱼1日龄平均全长为(6.03±0.24)mm,2日龄时眼中布满黑色素,3日龄胸鳍出现,4日龄鳔出现,至5日龄时卵黄囊完全消耗,17日龄全长(14.55±0.40)mm,各鳍发育完全。其早期发育阶段(1—17日龄)的生长特性符合:y=0.0145 x 2+0.2627 x+6.0443(R 2=0.9933)。In order to understand the embryonic and larval development of Opsariichthys bidens(Chinese hooksnout carp)in Luanhe River system,a systematically observation was conducted on it.The results showed that the fertilized eggs were round and sinking,yellow or dark yellow,eggs diameter 1.2~1.4 mm,water-absorbed eggs diameter 1.4~1.6 mm.Under the condition of incubation water temperature of 19~22℃,it underwent 7 stages:blastoderm,cleavage,blastula,gastrula,neurula,organogenesis and hatching,lasting for 50 h 46 min,with total incubation accumulative temperature of 1054.90℃·h.Under the condition of water temperature 22~25℃,the average total length of day-old larvae was(6.03±0.24)mm.The eyes were covered with melanin at the age of 2 days.The pectoral fin appeared at the age of 3 days.The swim bladder appeared at the age of 4 days,and the yolk sac was completely consumed at the age of 5 days.The total length of 17-day-old larvae was(14.55±0.40)mm,and the fins were fully developed.The growth characteristics of its early developmental stage(1~17 days old)conform with the formula:y=0.0145 x 2+0.2627 x+6.0443(R 2=0.9933).

关 键 词：滦河水系 马口鱼(Opsariichthys bidens) 胚胎发育 仔鱼发育 

分 类 号：S917[农业科学—水产科学]