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时间:2019-06-02
《螺旋粉虱的生物学特性》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、万方数据昆虫学报ActaEntomo如gwaSinica,March2009,52(3):281—289ISSN0454-6296螺旋粉虱的生物学特性韩冬银,刘奎,张方平,黄武仁,张敬宝,金启安,符悦冠。(中国热带农业科学院环境与植物保护研究所.热带农林有害生物入侵监测与控制农业部重点开放实验室/海南省热带农业有害生物检测监控重点实验室,海南儋州571737)摘要:螺旋粉虱AleurodicusdispersesRussell是一种新人侵海南的重要害虫。本文结合田问观察和室内实验,对螺旋粉虱各虫态的形态特征及生物学特性进行了系统观察和研究。结果表明:螺旋粉虱世代的发育起点温度和
2、有效积温分别为8.88。C和511.86日·度.在海南一年可发生8—9代。在18—32℃恒温条件下,螺旋粉虱世代发育历期为26.63—57.16d,其中卵期7.15—15.93d,l龄若虫期4.00—11.03d,2龄若虫期3.83—7.53d,3龄若虫期4.09—8.64d,拟蛹期7.56一14.03d。在18—32。C条件下,各虫态发育速率与温度呈抛物线关系,但在18—28"C则为直线关系;低温和高温都不利于其繁殖,14。C恒温条件下无法完成世代发育。成虫不活跃,活动有明显的规律性,晴天活动多集中在上午,阴天活动少,雨天不活动。关键词:螺旋粉虱;生物学特性;形态;发育历期;
3、发育起点温度;有效积温;生命表中图分类号:Q968.1文献标识码:A文章编号:0454-6296(2009)03-028l-09Biologicalcharacteristicsofthespirallingwhitefly,AleurodicusdispersusRussell(Homoptera:Aleyrodidae)HANDong—Yin,LIUKui,ZHANGFang—Ping,HUANGWu—Ren,ZHANGJing-Bao,JINQi—An,FUYue·Guan’(KeyLaboratoryofMonitoringandControlofTropicalAgr
4、iculturalandForestInvasiveAlienPests,MinistryofAgriculture/KeyLaboratoryofPestsDetectionandControlforTropicalAgricuhureofHainanProvince,EnvironmentandPlantProtectionInstitute,ChineseAcademyofTropicalAsriculturalSciences,Danzhou,Hainan571737,China)Abstract:Thespirallingwhitefly,Aleurodicusdis
5、g,ersu$Russell,isanewlydestructiveinvasivepestinHainanIsland,China.Themorphologyandbiologyofthespirallingwhiteflywerestudiedsystematicallythroughobservationsandexperimentsbothinfieldsandlaboratory.Theresultsshowedthatthedevelopmentalthresholdandtheeffectiveaccumulativetemperatureforwholegene
6、rationwereestimatedtobe8.88℃and511.86degree-days,respectively,and8—9generationscouldoccurperyearinHainanIsland.Inthetemperaturerangeofl8。Cto32。C,thedevelopmentaldurationfromeggtOadultis26.63to57.15d(includingthatforegg7.15—15.93d,lstinstarnymph4.00—11.03d,2ndinstar3.83—7.53d。3rdinstar4.09—8.
7、64dand4thinstar7.56一14.03d).butthewhiteflyfailedtOsurviveat14。C.Thetemperaturehigherorlowerthan28℃,however,displayednegativeeffectsonthepopulationincreaseofthewhitely.Theadultsarenormallyactiveatdawnanddusk,especiallyatcalm,uncloudydawn(7:00am)orin
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