水生态学杂志2016，Vol.37Issue(4)：101-104,4.DOI:10.15928/j.1674-3075.2016.04.016
长丝裂腹鱼全人工繁殖试验
Artificial Propagation of Schizothorax dolichonema
摘要
Abstract
Schizothorax dolichonema Herzenstein is a Cyprinidae fish species,endemic to the Jinsha and Yagong river basins and listed in the artificial breeding and release program for Longkaikou,Ahai and Ludila hydropower stations on the middle Jinsha River.Schizothorax dolichonema has become very rare and the need for artificial prop-agation,conservation and recovery is urgent.This article describes the testing of sexually mature specimens to pro-vide a foundation for the artificial culture and release of Schizothorax dolichonema.In 2008,32 Schizothorax doli-chonema,weighing from 50 to 500 g,were collected from the Lijiang section of Jinsha River and domesticated in ponds at the Original Schizothoracinae Seed Farm of Dali Prefecture.After 7 years of domestication,a test of the complete artificial propagation was carried out in 2015.On April 7,2015,15 females,with an average weight of 3 000 g,and 9 males,with an average weight of 1 500 g,were induced to spawn.After being anaesthetized in a 50mg/L solution of tricaine methanesulfonate (MS-222),the fish were injected with a mixed solution of carp hy-pophysis and chorionic gonadotrophin at a dose of 0.5 mL/kg for females and half the dose for males.After 48 hours and 20 minutes,6 female fish spawned 64,790 eggs (spawning rate,40%).Through artificial insemination, 23,350 fertilized eggs were obtained (fertilization rate,36%).Incubation of zygotes was carried out at the temper-ature of 15 -16℃ and the zygotes developed to the mid-gastrula stage 40 h after insemination.On April 16 at 15 ∶00,cleavage began and was complete the next day by 18 ∶00.A total of 10,675 larvae hatched (incubation rate,45.7%).The successful artificial breeding of Schizothorax dolichonema lays a solid foundation for an artifi-cial breeding and release program for the cascade stations on the middle Jinsha River.关键词
长丝裂腹鱼/人工繁殖/增殖放流Key words
Schizothorax dolichonema/artificial propagation/enhancement and release分类
农业科技引用本文复制引用
赵树海,严燕群,苏银梅,杨弢,杨光清,宝建红,赵振寰,华朝斌,郭海涛,李根荃,董现鲜,李志洪..长丝裂腹鱼全人工繁殖试验[J].水生态学杂志,2016,37(4):101-104,4.基金项目
云南省农业科技推广项目（2011－2016）。 （）
