孤雌生殖累积世代数和雌体年龄对萼花臂尾轮虫繁殖的影响  

Effects of cumulative parthenogenetic generation and age of amictic female on the reproduction of rotifer Bra-chionus calyciflorus

作　　者：席贻龙[1] 胡好远[1] 耿 红[1] 金洪钧[2] 黄祥飞[3] 

机构地区：[1]安徽师范大学生命科学学院,芜湖241000 [2]南京大学环境学院,南京210093 [3]中国科学院水生生物研究所,武汉430072

出　　处：《应用生态学报》2002年第4期435-438,共4页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金(39870158);安徽省自然科学基金(100330);安徽省教委自然科研基金(2000jl084)资助项目.

摘　　要：采用单个体培养方法,研究了孤雌生殖的累积世代数和雌体年龄对萼花臂尾轮虫混交雌体形成和产卵量的影响.结果表明,随着轮虫孤雌生殖累积世代数的增加,各代中的总混交雌体百分率呈减小的趋势;年幼的雌体可产生较多的混交雌体;非混交雌体所产后代中的总混交雌体百分率具有随其祖母年龄的增大而增大的趋势.孤雌生殖的累积世代数对轮虫非混交雌体的平均产卵量无显著的影响,非混交雌体的年龄对其后代的平均产卵量亦无显著的影响.Effects of cumulative parthenogenetic generation and age of amictic female on mictic female production and fecundity of the rotifer Brachianus calyciflorus were studied by means of individual culture. The results showed that percentage of total mictic females produced by the parental females in each of four generations increased with the increasing generations. More mictic females were produced from younger maternal amictic females. Amictic offspring from older mothers produced more mictic daughters. There was no significant effect of the cumulative parthenogenetic generation on the mean number of eggs produced by amictic females per life cycle, and no significant effect of the age of amictic female on the mean number of eggs produced by the offspring of amictic female.

关 键 词：孤雌生殖累积世代数 雌体年龄 萼花臂尾轮虫 繁殖 产卵量 混交雌体百分率 

分 类 号：S963.214[农业科学—水产养殖]