Briefing of 16/1/84 concerning results of the 2nd week (9-13/1/84) and propasais for the 3rd week (16-20/1/84)

l-:i DK(1o From D. Kurtak our ref. fCU/oOg1 Your ref. OUAGA . MEMORANDUM Tô' DosEier Badto Brleflng" Datt 15 Janüary L984 Attention Subject 1m OFBR ,i ' lhere was no .fo:maI brtefla! for the Dastenc Zonê. I[o flles were eaughtin the treatecLizüap ahct the polièy of treating aII potential breectlng sltef by air will continue. ... ':'Tn the lfest resultÈ trere'êrcellent j.u the treatecl zotre, wtth tbe etrcêp:- tlon of T,ogou+lé on the §rzo.ancl Guessabo on ttre Sassantlra where 84 and 1Oflies respectively were eaught in splte of îehaar treatnents. At the same tlme 3ae seuien oa the sassândra was positive for larvae (5) ana pupae (60) after treatment. In regartle to.the treatnent fallure, Aerlal 0perations lnrllcated that the eonstantly falllng.water levet required d change in tfedtneut technique which wor:ld be trhplemented next week. ' Ia regarde to the situatLon farther clorrr the Sassarxdra and on tbê lfrao, Aerlal Operations wiJ.].seareh for new breetltng sites below Guiglo on ttre'Iifrzo.htmologlcal evaluatioh sil J atteropt to deterulnE morahologtcally if theflies are forest species eoning..fron the Sassandra or g. squamgsum coning fron smalI affluents. Ân aerlal proepectlon of the breetling sltes on the,Bandana belovv [iaesalé was carrled. out Fpà .11 were for:nd negatlvei' Three expertnental lnsecticlde appiications !ÿere camied out on the susT pendetl p-ortiôn'of the Lower Comoe. E:rperi.nental îetfi'ar V{i5-27 gave or.].:y jS- 75f" peduction. at"tbe açrpIlcption,pol4ti Peruethrinl. on the other hsnal was 1.:OO% effectlvà at both:OeÔ05 antl 0,.O1 ngl1 for'10 nfuiutes. Conclitions çère not ideal, riftA less thag-'I.0n5rlsec of discharge. The Tehar riII be testetl next week on the.B€gDê. After some rllscuqstonr 'lt was decitletl lrqt to theat the lower Comoe.even though the inseoticitle.têsts are'flaished. It was felt tbat the §,.soubbense/sanetlpauli flj.es bltlng I.n tUs.s zolre have no eBlttenlological srfiiriffis F ÿi§ bIln<t1ng onchoeereiaeisr,ând tbat they are not nigratlng far. îhe rlver maJr soon dry uBr and there will be tine later for artelean-uprr of the reelstant strêin. In the meanti:ae, useful lnforâatton, on the Lcleutitye frequency, breediag, blti-ng habits', biüing pCiprrlatlon ttSmanics and veetor roLe of the specles eould 'be obtained. I'or this purpose extra eta,ff rtilI move tenporarlly from sectors of Boto D1-oulasso and Ouaga to parti-cifate in these stutlies çncl those..of Sassanclra rlver baslas. îhe volwrtary suepenslo4'bcgau last weeÈ (Vofta fioire, Bandana Blane, Marahoué) ntI} conti.nue. i i It was decided to reduce the frequeucy of fo:mal briefiag§ to oue in tro çeeks until f,r:rther nottce. . .. Chief ÿCU Chief Evaluatlon "iClrief Àer, :Ois, Chief Zone East Chief Zone lÿest Dr. Subrà cc: ', o 4 -ô æo; t6 ooz --{ æo noôâ - -m ÿ, -t ffi ,.i ,, =.u ü, .a2 Èm !FIa -3m(, B E -{ r c)o z,i F -o - mE(',o(nr l, ztj - æ c)ô -I Boa, =.trtm ç o11 É \ {k rvt- § <> ç> h \ + hx tsk§ÈP 5\P Ut §-i§ô -f, o I (> 'i l I .t §,a o a I oI I I §) {@e' a\ tr I r l.E ;E ,1, T-l I o r '? II / I : a., oz -1) a' V] ',iri i§ I{'t i- {@\§ft-z/ t" ri il' I llr l e È- t-lô- \rt PP.*E \taè- O(, -s I rI I I ^r-{-r>t --' / '!' a I iir I t r