水生生物学报2017，Vol.41Issue(6)：1362-1368,7.DOI:10.7541/2017.168
铜绿微囊藻对轮虫生命表参数和表型特征的影响
EFFECTS OF MICROCYSTIS AERUGINOSA ON THE LIFE-TABLE PARAMETERS AND PHENOTYPIC TRAITS OF ROTIFERS
摘要
Abstract
To evaluate the effects of microcystin-producing and microcystin-free Microcystis aeruginosa on the population growth and phenotypic traits of rotifers,we discussed the responses of life history parameters and morphology of Brachionus calyciflorus to different M.aeruginosa solutions.In order to ensure that rotifers obtained food supply from same carbon content,the total carbon content was maintained at a level of (20.61±0.15) μtg C/mL per unit volume in every treatment group.Rotifers were fed on Chlorella pyrenoidosa,Scenedesmus obliquus,microcystin-producing and microcystin-free M.aeruginosa,and mixtures of green algae with toxic and nontoxic cyanobacteria,respectively.Compared with the control group,the life-table experimental results showed that net reproduction rate R0 (F=102.71,df=32,P＜0.001),generation time T (F=17.05,df=32,P＜0.001) and intrinsic growth rate rm (F=18.89,df=32,P＜0.001) of rotifers decreased 1.36％-210.34％ in the groups fed with different M.aeruginosa mixtures.Posterolateral spine length (F=28.18,df=65,P＜0.001) and swimming speed (F=181.69,df=65,P＜0.001) of B.calyciflorus declined 2.63％-39.07％,and the rotifer body length (F=690.04,df=65,P＜0.001) changed significantly.The life table parameters and phenotypic traits of rotifers changed with concentrations of Microcystis solutions compared with those in groups fed with green algae.Under the stress ofM.aeruginosa,the growth and reproduction ofB.calyciflorus were inhibited,and its morphology changed to defend adverse living environment.关键词
铜绿微囊藻/萼花臂尾轮虫/净生殖率/世代时间/内禀增长率/表型特征Key words
Microcystis aeruginosa/Brachionus calyciflorus/Net reproduction rate/Generation time/Intrinsic growth rate/Phenotypic traits分类
生物科学引用本文复制引用
梁叶,欧阳凯,许欢欢,杨家新..铜绿微囊藻对轮虫生命表参数和表型特征的影响[J].水生生物学报,2017,41(6):1362-1368,7.基金项目
国家自然科学基金(31772458和31272388) （31772458和31272388）
江苏省水产三新工程项目(Y2017-35)资助[Supported by the National Natural Science Foundation of China (31772458,31272388) （Y2017-35）
Three Term Project of Aquiculture of Jiangsu Province,China (Y2017-35)] （Y2017-35）
