鲈鲤胚胎及胚后发育  

Embryonic and Postembryonic Development of Percocypris pingi pingi( Tchang)

作　　者：赖见生[1] 杜军[1] 赵刚[1] 邓晓川[1] 李华[1] 何兴恒 赵海鹏[3] 

机构地区：[1]四川省农业科学院水产研究所//四川省生物资源保护与可持续利用实验室,四川成都611731 [2]国电大渡河流域珍稀鱼类保护研究中心,四川甘洛616856 [3]河南大学生命科学学院,河南开封475004

出　　处：《西南农业学报》2014年第3期1326-1331,共6页Southwest China Journal of Agricultural Sciences

基　　金：四川省财政育种工程青年基金项目(2009QNJJ-022;河南省科技成果项目[豫科鉴委字(2013)2362]

摘　　要：显微观察并拍摄鲈鲤[Percocypris pingi pingi （Tchang）]胚胎发育及胚后发育过程的形态特征,描述了鲈鲤早期发育过程.结果显示：成熟鲈鲤卵呈球形、桔黄色,为粘性卵,卵径2.2 mm,卵膜遇水膨胀后,最大外膜径达3.2 ～ 3.8 mm.受精卵在水温（18±0.5）℃条件下,受精2 h 28 min后开始第1次卵裂,受精后45 h 23 min开始形成器官,受精后126 h 28 min孵出仔鱼.初孵仔鱼全长为10.4 mm,卵黄囊大而侧扁.根据胚胎发育过程的形态特征,可将鲈鲤胚胎发育过程分为受精卵、卵裂、囊胚、原肠胚、神经胚、器官发生和出膜7个连续阶段,32个时期.在水温18.8 ～25.0℃下,鲈鲤从出膜仔鱼至幼鱼历时93 d.根据其胚后发育的形态、生态特征可分为3个阶段：卵黄囊期仔鱼、晚期仔鱼、稚鱼.The embryonic and early stage larval development of Percocypris pingi pingi （Tchang） were studied.The results showed that the fully mature eggs were spherical,aurantium,sticky,2.2 mm in diameter,and 3.2-3.8 mm after absobing water.When water temperature was （18 ± 0.5）℃,126 hours and 28 minutes was needed to hatch the embryos,which were described as follows：fertilized egg at 0 minute,2-cell stage at 2 hours and 28 minutes after fertilization,after fertilization 45 hours and 23 minutes organs begin to form,and larvae at 126 hours and 28 minutes after fertilization.Newly hatched larvae had a total length of 10.4 mm and yolksac was big and compressed.The embryonic development process could be divided into 7 stages,including fertilized egg stage,cell division stage,blastula stage,gastrula stage,neurula stage,organ formation stage and hatching stage.They contained thirty-two developing phases,whose characteristics were described in detail.According to morphological characters and ecological character of postembryonic development of Percocypris pingi pingi（Tchang）,three phases were devidied as yolk-sac stage,late-larvae stage,junenile stage from larvae to juvenile at 18.8-25.0 ℃ of water temperature.

关 键 词：鲈鲤 受精卵 胚胎发育 胚后发育 

分 类 号：S965.199[农业科学—水产养殖]