t ,n . t r , , . r r r , . . , r / , { . t , : . , " l l { " t , " : ' " , i ' ; , , r , . , , \ l rJ , ( ,nc. , i l { . i l l : ! , ( i lc' , n . h t h l I i i J h \ I h t \ n r ( ' r r t J

THE EFFECTIVENESS OF PERMETHRIN AND

OR IN ö'U'"OTION. FOR PROTECTION

.AEDES TAENIORHYNCHUY

DEET, ALONE

AGAINST

C E' SCHRECK't D' G' HAILE'* rNo D' t tolf:t '

rnsecrs.lrreain, ,n"^ ',,0\jl;j,'ü:::'i;:;::,:t:'ä;:!^ä";;'r:;! L'nired Sntes Depa^men'l

Abstract. Fieid tests were conducted-to compare the de-gree of pl:1::tion from bites by

the mosquito .t"a,, ,o,*nio,'aä1^ iy'*:T"i'i;;'i,$1,',t,ür:,;::':l':"',liitfrll;i::1*in"ää;inn" [(3-phenoxyphenvl)metnvt .:;äJ';;;oprvi"ä deet (N,N-diethyl-rn-

ljili * lj:] :f :'.nT;'ll' :11ty' ll,üilf il i'i l ;;; ; "'i " d ir'i trea t ed ci o t h i n g H u m a n

restsubjec,s*...."*,.äi.-""ui,"i,l"t*::ilh::i::iti::l;*:tl;tfiFi$ii.ti.'r e daYVtreatment)

*th:lä:::r'Hi'ä; ", u .r'..t to determine the overarr

subjects were also exPo

biting rate or ,"orqu,,i',] i-t'' l'-üi'". 1i;,li täir' pÄt*ti:" l:T*l.Ji:t'tiätl

'f i*[tätr'*l;äl{*i';gliü:$ffireduced biring rates uv töötit*ithin rhe irnmediate area where suoJec

,i".t"O uniforms for t hours'

Personal pto"t'ion from the bites of blood-

f..aitt ""ttropods has usuallv ftl i::::-

ffi:ä u, ,i" "t"

of chtmical repellents app.lied

to skin of clothing, or ooth't Currently used re-

;;;t;r;t; effecti'"e onlY when aPPlied ',' :::i

t ively large quanrlt les' and their use may cause

p,our.-, or l.*oii:'o T;"ll'-il'L ili J"jl-offensivelY odorous' ar

t ics. A repel lenr mixture (M- 1960) developed for

i m pres'ation .' T1tg,'i""tt::;#: l?:ilf :'JaccePted due to its od(

"tllttä;, bv Schreck et al'''r indicated tllt tl'

": ;ü i i'i + l:: ::';1i, $"1 fi,l'ii :::i' ä;merhrin [(3-PhenoxyPn';I

;ä;i;t;'t'envtlz' 2dimethvlcvclopropane-

ä;;i;;;i offers-a hi ghlv e ffecri "'.'"::Y, :';;.;;;;ftsect bites because of its toxic actron'

In addit ion, the use ol permethrin has many ad-

vantages overthe u" oitonutntional repel lents'

As a clothing impregnant' i t is long lasttng' oe-

;;.',;,ä;s *ashins and wear ana1.1 s11ul; tn

;f ir . . ;oiro. *t-. , t ;n i t not sreasv't:-: : :1'oi^1,i.''.i. ;'; :' :f,'il, ff :::J::ä'il ?lprotects ot

i:t lT:::tir reduces the bitins pop-reoellencY; therelore'

ulat ion in the immediate area'

T:;;;;; has bcen subjected to'il:1:1""

,.il;;il;;;rmine its toxicitv to mammals rrom

tl*.t,l." "t'ttom chronic ropical and inhalatton

exposure.A n.p"",.J"ppiätiont t" -tl,t-tl:.:t

various mammals caused no eye-or tl11'lTt"-

t ion, and no skin "n' i t iui t t

or histologi 'cal le-

sions. The authors of a I 3-week study-wtth'var-

ious mammats' i"ctuoing bcagle dogs' ::"-t]:o"o

that inhalation of ptt--"tftrin does not present

an acute to^it n"t"'ä to-t'urn"nt't In a study of

125

AccePted l3 December 1983'

e results of rcsearch only'. This paper repons the resltts-11.1:::-":';;;-

*."iiä. äi'" pt'tltiat docs not constitutc'a-reco1

;:ä;ä;' r.' u se bv ll'-J,:.ä'""#äil lt"#"i ;culture. nor does it impry ttStstit:'.:': "'.:;:;

"....u.4ää;ä i;; *r 1 1 3;iXXr:'ü l[:ffi ':::ä:l.-

b" 166 l - [n ivers i ty oI r lor

;J, l'i". ;äääi of Hut"n Subjecrs' in accordance

;;, ;' ;;* J; ;.' re' h v 1i" i:ll X1 : i'T' l;T'l'r" l ll;103 (b), Federal Regster '

1976. ' rh

"nlr."r.t reponcd herc was conduclcd' in' ?"n Yll."1,ä' ;;;;; ": * l* tr'#.;':;:'J.ä 1:Tand DcveloPment Lomm

Maryland. ,ts ro: C. E. Schreck, Inst^cts

,*l$läl,xl;l iäül i:l#.:,nr:::,t nuion, P.o. Box 14565'

f Rescarch Entomologlst'

f Agricultural Engincer'