9种交配组合鳢的人工繁殖试验  

Artificial Propagations of Nine Mating Combinations among Channa argus, Channa maculate and Hybrid Snakehead

作　　者：龙敏明[1] 马建波[1] 周爱国[1] 曾运丁[1] 邹记兴[1] 

机构地区：[1]华南农业大学动物科学学院,广东广州510642

出　　处：《水生态学杂志》2012年第5期66-72,共7页Journal of Hydroecology

基　　金：广东省部产学研结合项目(2011B090400270);清远市科技计划项目(2011C011106009)

摘　　要：运用人工催产的方法进行了9种交配组合鳢的人工繁殖试验,9种组合来源于乌鳢(Channa argus)、斑鳢(C.maculate)和杂交鳢(Hybrid snakehead)彼此之间的交配繁殖。结果表明,无论采用何种孵化方式,9种交配组合所产卵的受精率和孵化率高低顺序基本一致,且各组合间都存在显著差异。交配组合斑鳢(♀)×斑鳢(♂)、斑鳢(♀)×杂交鳢(♂)、杂交鳢(♀)×斑鳢(♂)及杂交鳢(♀)×杂交鳢(♂)在繁殖过程中,其受精率和孵化率高于其他组合,具有较强的繁殖优势,但其子代的生产性能优势还有待进一步研究。孵化方式对受精卵的发育与孵化有重大影响,其中以微流水孵化方式时的受精率和孵化率最高、孵化效果最好。雄亲鱼的重复催产次数会影响受精率及孵化率,一般以重复利用2～3次为宜。Artificial propagations of nine mating combinations among Channa argus, C. maculate and hybrid snakehead were conducted in this study, which was expected to provide the reliable technical information and experience for the cultivation and production of hybrid snakehead. The results showed that the orders of fertilization rate and hatching rate for the nine kinds of snakehead were same in all hatching methods and there were significant differ- ences in fertilization rate and hatching rate among the nine kinds of snakehead. The fertilization rates and hatching rates of four mating combinations [ i. e. C. maculate （ ♀） × C. maculate （ ♂ ）, C. maculate （ ♀）× hybrid snakehead （ ♂ ）, hybrid snakehead （ ♀ ） ×C. maculate （ ♂） and hybrid snakehead （♀） × hybrid snakehead （ ♂ ） ] were higher than these of other five combinations, which suggested higher reproduction efficiencies of the four combinations. However, the production performance advantages of their offspring still needed further research. Hatching method had significant influences on the development and hatching of fertilized eggs, and the method inicro -flow incubation＇ was the best. The fertilization rate and hatching rate were also influenced by the number of reuse of male broodstock, and the suitable number of reuse was 2 -3.

关 键 词：鳢 人工繁殖 受精率 孵化率 

分 类 号：Q321[生物学—遗传学]