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《虫螨腈对乳白蚁的毒力及药效研究》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、·516·中华卫生杀虫药械2014年12月第20卷第6期ChinJHygInsect&EquipDec2014Vol.20No.6【论著】虫螨腈对乳白蚁的毒力及药效研究林雁(南京市白蚁防治研究所,江苏南京210004)摘要:目的了解虫螨腈对白蚁的毒力及药效情况,为白蚁灭治开发更多品种的粉剂、饵剂提供理论依据。方法在室内采用滤纸药膜法、粉剂触杀法、饵剂胃毒法以及粉剂毒力传递作用共4种方法测定了虫螨腈对乳白蚁的毒力和药效。结果虫螨腈药膜法持续接触72h对乳白蚁的致死中浓度为2.20mg/L;乳白蚁均匀粘上虫螨腈粉剂后72h触杀作用的致死中浓度为0.1086%;乳白蚁对1%、5%及10%虫螨腈粉剂
2、具有毒力传递的能力,浓度越高,毒力传递能力越大,白蚁的死亡率越高,全部死亡需要的时间越短;虫螨腈饵剂(5%、1%、0.5%、0.1%)致乳白蚁死亡的高峰时间段在处理后24~48h和48~72h。在0~24h内死亡率不高,白蚁全部死亡的时间约需要1周左右。结论虫螨腈对乳白蚁有较高的触杀和胃毒毒力并且为慢性毒力,有毒力传递作用,其特点满足白蚁灭治药剂的要求。关键词:虫螨腈;乳白蚁;毒力;药效中图分类号:R184.39文献标识码:A文章编号:1671-2781(2014)06-0516-04ToxicityandefficacyofchlorfenapyragainstCoptotermesfor
3、mosanusLINYan(NanjingTermiteControlInstitute,Nanjing210004,China)Abstract:ObjectiveTounderstandthetoxiceffectofchlorfenapyragainstCoptotermesformosanus.MethodsInlaboratory,toxicityandefficacyofchlorfenapyragainstCoptotermesformosanusweredeterminedbyusingresidualfilmoftermiticideaddedintofilterpaper
4、.Contactpoisoningactionoftermiticideinpowderandstomachpoisoningactionoftermiticideinbaitandthetoxicanttransmittingabilitywerealsotested.ResultsTheLC50ofchlorfenapyragainstCoptotermesformosanuswhichcontinuouslycontactedfilterpaperwithchlorfenapyr'sresidualfilmwas2.20mg/L.TheLC50ofchlorfenapyrpowdera
5、gainsttermitetreatedafter72hwas0.1086%.Termiteheldsometoxicanttransmittingabilityto1%,5%and10%chlorfenapyrpowder.Thehighertheconcentrationwas,themorevirulencetransmittinga-bilityandmortalityoftermitedisplayed,andthelessthetimerequiredforalltreatedtermitedeath.Theperiodofhightermitesmortalitycausedb
6、y5%,1%,0.5%and0.1%chlorfenapyrbaitswereat24-48hand48-72haftertreatment.Thedeathrateoftermiteswaslowwhileat0-24haftertreatment.Alltermitestreatedwith5%,1%and0.5%chlorfenapyrbaitsdiedinoneweek.ConclusionChlorfenapyrholdshightoxicityofcontactandstomachpoisoningactionagainsttermites,anditmeetstherequir
7、ementsoftermiticidesusedtocontrolorkilltermitesforitschronictoxicityandtoxicanttransmittingability.Keywords:chlorfenapyr;Coptotermesformosanus;toxicity;efficacy我国的白蚁防治一般分为白蚁预防和白蚁灭道毒土屏障阻隔外周的白蚁进入建筑物里,使用的治。白蚁预
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