饵料配比、接种密度及盐度对圆型臂尾轮虫种群增长和繁殖的影响  

Effect of Feed,Initial Density and Salinity on Population Growth and Reproduction of Brachionus rotundiformis

作　　者：蔺丽丽[1] 宋丹[1] 陈玉珂[1] 徐静[1] 周敏 吴莉芳[1] 王桂琴[1] 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]吉林省扶余县水产技术推广站,扶余131200

出　　处：《吉林农业大学学报》2010年第4期453-459,共7页Journal of Jilin Agricultural University

基　　金：国家自然科学基金项目(30671621)

摘　　要：以圆型臂尾轮虫(Brachionus rotundiformis)为研究对象,以不同配比的酵母和眼点拟微绿球藻(Nan-nochloropsis oculat)为饵料,采用2个盐度(2%,3%)、3个接种密度(1,10,50 ind/mL)进行饲养试验,比较研究了不同条件及其组合对轮虫种群增长和繁殖的影响。结果表明:饵料配比、接种密度、盐度及三因子间的交互作用均对轮虫的平均日增长率产生极显著影响(P=0.000);接种密度对轮虫抱卵率无显著影响(P>0.05),饵料、盐度及两者的交互作用对轮虫抱卵率产生显著影响(P<0.05)。三因子的最佳组合:盐度2%、接种密度1 ind/mL、饵料配比为眼点拟微绿球藻18.75×104/mL+酵母4.8×106/mL。The effects of feed, initial density and salinity on the population growth and reproduction in rotifer（ Brachionus rotundiformis ） were studied. Rotifers were cultured with 3 levels of initial density （ 1, 10,50 ind/mL）,2 levels of salinity （2%, 3% ） and fed with 5 combinations of yeast and Nannochloropsis oculat. Results indicate： the feed, initial density, salinity and their interactions had significant effects （ P = 0. 000） on population growth in rotifers ; no significant effects （ P 〈 0.05） were observed on hold-egg ratio of rotifers under the different initial densities ; feed, salinity and their interactions showed significant effects （ P 〈 0.05） on hold-egg ratio of rotifers. Results suggest that the optimum culture condition in this study would be salinity 2 %, initial density 1 ind/mL and with the combination of Nannochloropsis ocular 18.75×10^4/mL and yeast 4.8×10^6/mL.

关 键 词：圆型臂尾轮虫 饵料 盐度 接种密度 种群增长 

分 类 号：S917.4[农业科学—水产科学]