資源描述:
《蟲螨腈對乳白蟻的毒力及藥效研究》由會員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、·516·中華衛(wèi)生殺蟲藥械2014年12月第20卷第6期ChinJHygInsect&EquipDec2014Vol.20No.6【論著】蟲螨腈對乳白蟻的毒力及藥效研究林雁(南京市白蟻防治研究所,江蘇南京210004)摘要:目的了解蟲螨腈對白蟻的毒力及藥效情況,為白蟻滅治開發(fā)更多品種的粉劑、餌劑提供理論依據(jù)。方法在室內(nèi)采用濾紙藥膜法、粉劑觸殺法、餌劑胃毒法以及粉劑毒力傳遞作用共4種方法測定了蟲螨腈對乳白蟻的毒力和藥效。結(jié)果蟲螨腈藥膜法持續(xù)接觸72h對乳白蟻的致死中濃度為2.20mg/L;乳白蟻均勻粘上蟲螨腈粉劑后72h觸殺作用的致死中濃度為0.1086%;乳白蟻對1%、5%及10%蟲螨腈粉劑
2、具有毒力傳遞的能力,濃度越高,毒力傳遞能力越大,白蟻的死亡率越高,全部死亡需要的時(shí)間越短;蟲螨腈餌劑(5%、1%、0.5%、0.1%)致乳白蟻死亡的高峰時(shí)間段在處理后24~48h和48~72h。在0~24h內(nèi)死亡率不高,白蟻全部死亡的時(shí)間約需要1周左右。結(jié)論蟲螨腈對乳白蟻有較高的觸殺和胃毒毒力并且為慢性毒力,有毒力傳遞作用,其特點(diǎn)滿足白蟻滅治藥劑的要求。關(guān)鍵詞:蟲螨腈;乳白蟻;毒力;藥效中圖分類號:R184.39文獻(xiàn)標(biāo)識碼:A文章編號: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我國的白蟻防治一般分為白蟻預(yù)防和白蟻滅道毒土屏障阻隔外周的白蟻進(jìn)入建筑物里,使用的治。白蟻預(yù)