牛磺酸对圆型臂尾轮虫种群增长及繁殖的影响  

Effects of taurine enrichment on population growth and reproduction of rotifer,Brachionus rotundiformis

作　　者：朱成成[1] 陈玉珂[1] 董晓庆[1] 董婧[2] 张东鸣[1] 

机构地区：[1]吉林农业大学动物科学技术学院,长春130118 [2]沈阳农业大学畜牧兽医学院,沈阳110866

出　　处：《华中农业大学学报》2013年第4期111-115,共5页Journal of Huazhong Agricultural University

基　　金：国家自然科学基金项目(30671621);吉林省产业技术研究与开发项目(2011002-1)

摘　　要：试验设4个处理,每个处理设4个重复,分别以0、0.4、0.8、1.2 g/L的牛磺酸处理轮虫,研究不同质量浓度的牛磺酸对圆型臂尾轮虫种群增长和繁殖的影响。试验期为264 h。结果表明:各处理组的轮虫种群增长均与对照组有显著差异,0.8 g/L处理组在整个试验周期内轮虫种群密度极显著高于其他各组。对照组种群密度和日平均增长率在试验进行至144 h时均达到最大值,而处理组种群密度最大值出现在168 h,且0.8 g/L处理组的种群密度峰值最大,168 h后对照组轮虫种群增长极显著下降。0～24 h时,对照组怀卵率迅速升高,而其余各组缓慢升高。168～264 h阶段内,对照组怀卵率迅速下降,而各处理组则缓慢下降。试验初步证实,牛磺酸可以促进圆型臂尾轮虫种群增长及繁殖,且当牛磺酸添加量为0.8 g/L时,轮虫的种群增长动态表现最好。Effects of taurine enrichment on the population growth and reproduction of rotifer,Brachionus rotundiformis were studied.Rotifers were enriched with 4 levels（each with 4 repetitions） of taurine,0,0.4,0.8,1.2 g/L,respectively and the culture lasted for 264 h.The results showed that the population growth of rotifer in the treated groups were significantly different from the control（P＆lt;0.01） and the population density was significantly higher in the 0.8 g/L group than in the other groups（P＆lt;0.01） during the culture period.The population density and growth rate reached the maximum at 144 h in the control and at 168 h in the treated groups,with the highest density appeared in the 0.8 g/L group.The population growth decreased significantly in the control（P＆lt;0.01） after 168 h.The egg ratio of the control increased rapidly during 0-24 h and decreased rapidly during 168-264 h.While in the treated groups,the egg ratio increased and decreased slowly.In conclusion,taurine could be a positive factor to enhance reproduction and population growth of rotifers and the optimal concentration was 0.8 g/L.

关 键 词：牛磺酸 圆型臂尾轮虫 种群密度 日平均增长率 繁殖 怀卵率 

分 类 号：S963.21[农业科学—水产养殖]