汉江地区翘嘴鲌胚胎及仔鱼发育观察  

Observation on embryonic and larval development of Culter alburnus of Hanjiang River

作　　者：邵建春[1] 刘春雷 秦芳 秦长江 顾泽茂[1] SHAO Jianchun LIU Chunlei QIN Fang QIN Changjiang GU Zemao(College of Fisheries,Huazhong Agficultulral University,Wuhan 430070 , China Hubei Yuheyuan Ecological Agriculture Development Limited Company,Jingzhou 434020 , China)

机构地区：[1]华中农业大学水产学院,武汉430070 [2]湖北鱼禾园生态农业开发有限公司,荆州434020

出　　处：《华中农业大学学报》2016年第6期111-116,共6页Journal of Huazhong Agricultural University

基　　金：湖北省重大科技创新计划项目(2013ABA009)

摘　　要：经人工催产、人工授精获得汉江地区庙湖翘嘴鲌受精卵,对其胚胎和仔鱼发育的各个时期进行连续观察,并详细记录各个发育阶段的形态特征。结果表明,受精卵为圆球形、青灰色、微粘性、漂浮性卵,卵径为（1.17±0.15）mm,吸水膨胀后卵径达（3.26±0.37）mm;胚胎发育可分为21个时期,水温在23-25℃范围内,受精40min后开始第1次卵裂,受精后9h45min后器官开始形成,受精后20h15min仔鱼开始出膜,发育总积温为483.4℃·h;初孵仔鱼全长为（3.39±0.37）mm,卵黄囊呈梨形,平均体积为0.134mm^3,4日龄仔鱼卵黄囊几乎完全消失,开始出现摄食行为,全长达到（4.85±0.31）mm,仔鱼发育过程中卵黄囊长径（L）在1日龄期间发生增长,而后逐步减小,卵黄囊短径（D）一直随时间递减,卵黄囊体积（V）随时间（T）的变化方程为V=10^-5 T^2-0.0027T＋0.1342（R^2=0.966 7）。Fertilized eggs of Culter alburnus were obtained by induced spawning and artificial fertilization. The observation and characterization of embryonic and larval development processes were systematically carried out in May 2014 in Miaohu Lake.The results showed that the fertilized eggs were spherical,cinerous,slightly sticky,pelagic, （1.17 ±0.1 5） mm in diameter and （3.26 ±0.37） mm after hydration. At water temperature of 23-25 ℃,the process of embryonic development could be divided into 21 stages. First cleavage stage, organof act ion stage and hatching-out stage happened at 40 min, 9 h and 45 min and 20 h and 1 5 min post fertilization, respectively. The accumulative temperature were 483.4 ℃ · h. The newly hatched larvae had the total body length of （3.39 ＋ 0.37） mm and the yolk sac volume of 0.134 mm^3.The yolk sac of the 4-d-old larva disappeared and the total body length of them was （4.85 ± 0.31） mm.The long diameter increased at the first day and reduced later,while the short diameter reduced invariably. The correlate equation between the yolk sac volume （V） and the hour after hatching （h ） was V=10^-5 T^2-0.0027T＋0.1342（R^2=0.966 7）.

关 键 词：翘嘴鲌 庙湖 胚胎发育 仔鱼发育 

分 类 号：Q959.468[生物学—动物学]