长鳍吻鮈人工繁育的初步研究  

Artificial Propagation of Rhinogobio ventralis

作　　者：管敏[1] 曲焕韬[1] 胡美洪 刘勇[1] 鲁雪报[1] 倪勇[1] 肖衎 杨元金 李莎[1] 郭文韬[1] 

机构地区：[1]中国长江三峡集团公司中华鲟研究所,湖北宜昌443100

出　　处：《水产科学》2015年第5期294-299,共6页Fisheries Science

基　　金：中国长江三峡集团公司资助项目

摘　　要：2012年3月—2014年4月,连续两年利用长江上游宜宾江段收集的野生长鳍吻鮈开展驯化培育及人工繁育试验。试验结果表明,在人工驯养条件下长鳍吻鮈性腺可发育成熟,传统鱼类催产方法适用于长鳍吻鮈,雌鱼3次注射后可促进排卵。本试验共催产成熟亲鱼260尾,平均催产率8.1%,获受精卵约9.8×104粒,受精卵直径（1.80±0.10）mm,受精后卵膜吸水膨胀,卵膜径（6.86±0.31）mm,受精率50.5%~98.9%,在17.6~18.3℃条件下流水孵化,胚胎发育历时56h,孵化率26.4%~48.1%,孵化鱼苗总计31 500尾;初孵仔鱼全长（6.57±0.42）mm,6~7日龄仔鱼开口摄食,经30d培育获稚鱼12 000尾,全长达（21.23±0.70）mm,成活率38.1%。本试验系长鳍吻鮈首次人工繁殖成功。From March 2012 to April 2014,260 individuals of Rhinogobio ventralis were collected from the upper reaches of Yangtze River in Yibin,and used for artificial domestication and propagation.It was found that R.ventralis developed into maturation in artificial domestication condition and was induced to spawn by the traditional techniques by a high dose of hormone injection at three times.In the experiment,260 brood fish were induced to spawn,with average success of 8.1%,and 98 000 fertilized eggs were obtained.R.ventralis had eggs with average diameter of（1.80±0.10）mm,with fertilization rate of50.5%—98.9%,and the egg membrane was expanded via water absorption to diameter of（6.86±0.31）mm.The fertilized eggs were hatched in 56 hours at water temperature of 17.6—18.3 ℃,and 31 500 larvae were obtained,with hatching rate of 26.4%—48.1%.The newly hatched larvae were measured（6.57±0.42）mm in total length and started initial feeding at the age of 6—7days.A total of 12000 juveniles with total length of（21.23±0.70）mm was obtained in 30 day culture,with survival rate of38.1%.The finding is the first successful artificial propagation on R.ventralis.

关 键 词：长鳍吻鮈 人工繁育 受精卵 仔鱼 稚鱼 

分 类 号：S961.2[农业科学—水产养殖]