几种环境因子对萼花臂尾轮虫摄食生态的影响  

Effects of Several Environmental Factors on Feeding Ecology of Rotifer Brachionus calycifloru

作　　者：黄鹤忠[1,2] 顾若波[3] 王小林 许臣[1,2] 陆建明 聂志娟[3] 徐钢春[3] 

机构地区：[1]苏州大学基础医学与生物科学学院 [2]苏州大学水产研究所,江苏苏州215123 [3]中国水产科学研究院淡水渔业研究中心农业部淡水渔业和种质资源利用重点实验室,江苏无锡21408 [4]江苏省太湖渔业管理委员会,江苏苏州215004

出　　处：《安徽农业科学》2015年第25期129-132,共4页Journal of Anhui Agricultural Sciences

基　　金：江苏省农业科技自主创新资金项目[CX(13)2039];苏州市科技支撑计划项目(SS201311)

摘　　要：[目的]探索pH、温度、光照、饵料密度4种环境因子对萼花臂尾轮虫（Brachionus calyciflorus）摄食率和滤水率的影响。[方法]在室内实验生态的控制条件下,通过设置不同单因素环境因子的梯度,采用饵料浓度差减法研究轮虫在不同时间段的摄食和滤水效率。[结果]在4种环境条件下,饥饿状态下的萼花臂尾轮虫在起始3 h的摄食率和滤水率均最高（P〈0.05）,此后随着培养时间的延长而逐渐降低。萼花臂尾轮虫摄食的适宜pH范围为7.0-9.0,最适pH为8.0;最适水温为25-30℃;最适饵料密度（椭圆小球藻Chlorella ellipsoidea）为13.0×10^6ind/ml;在最高光强130μmol/（m^2·s）的试验条件下,光照强度越高,越有利于萼花臂尾轮虫的摄食。[结论]该研究为轮虫的规模化培养时环境条件的调控提供必要的技术参数,也为轮虫生态学理论提供一定的基础资料。[ Objective] To study effects on the feeding rate（G） and filtering rate （F） of the rotifer Brachionus calyciflorus under four kinds of environmental conditions which are pH, temperature, light intensity and food concentration. [ Method ] In laboratory experiments of controlled conditions and ecological, by setting different environmental factors in univariate gradient, the feeding and drainage efficiency were studied by subtraction of different time periods food concentration. [ Result] The results showed that G and F of rotifer Brachionus calyciflorus of fames state were the highest in time than after the beginning of the 3 h （ P 〈 0.05 ）, then decreased gradually with the extension of the cultivation time, in the four kinds of environmental conditions of experimentation. The suitable pH for feeding of Brachionus calyciflorus ranged from 7.0 to 9.0, the optimal pH and temperature were 8.0 and from 25 ℃ to 30 ℃, respectively. The optimum food density （ Chlorella ellipsoidea） of Brachionus calyciflorus was 13.0 ×10^6 ind/ml. The higher light intensity under the maximum intensity 130 μmol/（ m^2 ·s） of the experimental conditions, the more favorable Brachionus calyciflorus feeding. [ Conclusion] The research had not only provided necessary technical parameters for regulation of environmental conditions in the scale of rotifer culture, but also provided some basic information for rotifer ecology theory.

关 键 词：萼花臂尾轮虫 摄食生态 环境因子 摄食率 滤水率 

分 类 号：S917.4[农业科学—水产科学]