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ID:45331441
大小:1.78 MB
页数:49页
时间:2019-11-12
《对虾养殖水体中浮游纤毛虫原生动物的生态学及三种药物对纤毛虫的毒杀作用研究》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、中国海洋大学硕士学位论文对虾养殖水体中浮游纤毛虫原生动物的生态学及三种药物对纤毛虫的毒杀作用研究姓名:邱彦涛申请学位级别:硕士专业:水产养殖指导教师:宋微波2003.6.1摘要自2002年5月至10月对青岛王哥庄一封闭的日本对虾(Penaeusjaponicus)养殖水体中浮游纤毛虫原生动物做了初步的生态学调查。本文在资料采集、分析和比较的基础上.探讨了其优势和主要类群的群落结构、时空变化以及与多种理化因子间的关系。调查结果显示,水体水温、盐度、pH、浊度、营养盐及叶绿素等理化和生物因子等参数普遍较外界同期自然水体偏高:除叶绿素、氨氮和磷酸盐浓度起伏较大外,其它因
2、子在调查期间变化不明显。纤毛虫种数和多样性指数夏季最高,但丰度和总生物量与前两者不同,8月为低谷期。我们的工作还表明.除纤毛虫种数与环境因子相关性较大并与磷酸盐浓度显著相关(r=o.51,p3、对独立的部分.我们同对通过寡毛双眉虫(Diophrysoligothrix),冠帆口虫(Pleuronemacoronatum)以及海洋游仆虫(Euplotesvannus)等三种纤毛虫对水产养殖中几种常用药物高锰酸钾、福尔马林及鲁哥氏液的急性毒性实验.以几率单位法获得上述三种纤毛虫对福尔马林和鲁哥氏液的2h和12h的半致死浓度值LCso,2h与LC地12h,井在此基础上对3种药物的作用效果及杀灭浓度进行了比较。关键词:原生动物浮游纤毛虫海水养殖生态学毒性Lc,oAbstractCompositionandvariationofplanktonicciliated4、protozoawereinvestigated(MaytoOctober2002)inaclosedculture.waterforPenaeus]aponicusnearQingdao.Nineofmainenvironmentalaswellasbiologicalfactorswerealsosampled,analyzedandpresented.ResultsdemonstrateⅡ1atalltheeftvironmentalvariablesincludingwatertemperature,salinity,turbidity,pH,chloro5、phylla,ammonia—nitrogen,nitrate—nitrogen,nitrite—nitrogenandactivephosphorusalehigherthanthoseinopenwater.Amongthose,conspicuouschangescarlbedetectedonlyinchlorophvlla’ammonia-nitrogenandactivephosphorus,OurdataexhibitaswellⅡ1atthespeciesnumberofciliatesreachesitsDeakinsummer,sodoesth6、eShannon-Wienerdiversityindex.HowevegtheabundanceandbiomassarejnatroughinAugust.Simplecorrelationanalysesindicatethatalmostalltheparametersofciliates,includingspeciesnumber,abundance,biomassandShannon-Wienerdiversityindexarenotsignificantlycorrelatedtotheenvironmentalfactors.exce:ptth7、ecorrelationbetweenspeciesnumberandactivePhosphorus“=O.5l,p<0.05).About30ciliatestaxa,belonghagto3classes,7ordersand24generawereidentifieddurhagthesurvey.ExaminationofthestructureofciliatescommunityshowsthatProstomatidaarethemostdominantinabundance.andOligotrichidatakethesecondplace.A8、bout1
3、对独立的部分.我们同对通过寡毛双眉虫(Diophrysoligothrix),冠帆口虫(Pleuronemacoronatum)以及海洋游仆虫(Euplotesvannus)等三种纤毛虫对水产养殖中几种常用药物高锰酸钾、福尔马林及鲁哥氏液的急性毒性实验.以几率单位法获得上述三种纤毛虫对福尔马林和鲁哥氏液的2h和12h的半致死浓度值LCso,2h与LC地12h,井在此基础上对3种药物的作用效果及杀灭浓度进行了比较。关键词:原生动物浮游纤毛虫海水养殖生态学毒性Lc,oAbstractCompositionandvariationofplanktonicciliated
4、protozoawereinvestigated(MaytoOctober2002)inaclosedculture.waterforPenaeus]aponicusnearQingdao.Nineofmainenvironmentalaswellasbiologicalfactorswerealsosampled,analyzedandpresented.ResultsdemonstrateⅡ1atalltheeftvironmentalvariablesincludingwatertemperature,salinity,turbidity,pH,chloro
5、phylla,ammonia—nitrogen,nitrate—nitrogen,nitrite—nitrogenandactivephosphorusalehigherthanthoseinopenwater.Amongthose,conspicuouschangescarlbedetectedonlyinchlorophvlla’ammonia-nitrogenandactivephosphorus,OurdataexhibitaswellⅡ1atthespeciesnumberofciliatesreachesitsDeakinsummer,sodoesth
6、eShannon-Wienerdiversityindex.HowevegtheabundanceandbiomassarejnatroughinAugust.Simplecorrelationanalysesindicatethatalmostalltheparametersofciliates,includingspeciesnumber,abundance,biomassandShannon-Wienerdiversityindexarenotsignificantlycorrelatedtotheenvironmentalfactors.exce:ptth
7、ecorrelationbetweenspeciesnumberandactivePhosphorus“=O.5l,p<0.05).About30ciliatestaxa,belonghagto3classes,7ordersand24generawereidentifieddurhagthesurvey.ExaminationofthestructureofciliatescommunityshowsthatProstomatidaarethemostdominantinabundance.andOligotrichidatakethesecondplace.A
8、bout1
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