摘要
通过性激素药物诱导和人工繁育技术对哲罗鲑(Hucho taim en)(HH)(♀)与细鳞鲑(Brachymystaxlenok)(BB)(♂)进行了远缘杂交。研究结果表明:哲罗鲑(♀)×细鳞鲑(♂)杂交种(HB)的人工繁育效果与双亲对照组(HH和BB)不存在显著性差异(P>0.05),且HB的孵化率和仔鱼上浮率均高于HH和BB;选择水蚤和水丝蚓对HB鱼苗进行开口,采用全价饲料粉与水丝蚓的混合团进行过渡,再选用全价人工颗粒饲料进行驯化,驯化结果显示:BB最易于开口、驯化和摄食颗粒饲料,其次是HB,最难于驯化的是HH;HH、HB和BB经过6周的培育,其全长与体质量均呈正增长趋势变化,HB的体质量增长较HH和BB分别快25%、70%。HB的体长、体质量与周龄的最佳方程分别为Y=0.022x2+0.52x+7.30(R2=0.987 4)和Y=2.817 1e0.254 1x(R2=0.987 7),体长与体质量的最佳方程为Y=-0.002 4x3+0.051x2+0.42x+7.4(R2=0.987 5),HB的日增重为(0.30±0.13)g,分别高于HH和BB。
In the present study,distant hybridizations between Hucho taimen and Brachymystax lenok were carried out by artificial propagation.The results showed that there were no significant differences in fertilization rate,eyed rate,hatching rate,larva floating rate of the hybrid between Hucho taimen（♀） and Brachymystax lenok（♂）（HB）and control groups（P0.05）.First feeding larvae were fed with waterfleas and limnodrilu,then the mixture of limnodrilu and power diets,particulated diets.The taming results showed that the fries of Brachymystax lenok（BB）were the easiest to open mouth and to be fed particulated diets,then were the the hybrid between Hucho taimen（♀） and Brachymystax lenok（♂）（HB）,the fries of Hucho taimen（HH）were the hardest.After six weeks,the body weight and length of fries grew gradually in all groups.The body weights of HB were 25% faster than HH and 70% faster than BB.The regression analysis of the relationship between body length and weeks old,body weight and weeks old were Y=0.022x2＋0.52x＋7.30（R2=0.987 4） and Y=2.817 1e0.254 1x（R2=0.987 7）,respectively.The regression analysis of the relationship between body length and body weight was Y=-0.002 4x3＋0.05 1x2＋0.42x＋7.4（R2=0.987 5）.The daily weight gain of HB was（0.30±0.13） g,which was higher than HH and BB.
出处
《上海海洋大学学报》
CAS
CSCD
北大核心
2010年第2期178-183,共6页
Journal of Shanghai Ocean University
基金
黑水研基本科研专项(2007HSYZX-YY-21)
黑龙江省科技攻关项目(GC03B511
GA06B203-4)
科技部农转资金项目(2007GB23260395)
国家"十一五"支撑计划(2006BAD03B08)
关键词
哲罗鲑
细鳞鲑
远缘杂交种
人工育苗
生长性能
Hucho taimen
Brachymystax lenok
intergeneric hybridizations
artificial reproduction
growth characteristics
