Yaméogo L. auteur aut IRD Elouard Jean-Marc auteur aut IRD Simier Monique auteur aut IRD text journalArticle fre text/pdf reformatted digital access During the tests in gutters, five insecticides (B.t., Abate, chlorphoxin, carbosulfan and permethrin) employed by the Onchocerciasis Control Programme (OCP) have neither the same toxicity nor the same selectivity against for the principal aquatic taxa. In long run, the utilization of these insecticides led to dry season entomocenose structures characteristic for each product with differ from those observed during the pretreatment period. More the insecticides are estimed toxic in the gutter tests, more the long run typologies differ from the reference ones. The differences are slight for B.t., intermediate for Abate and of stronger magnitude for carbosulfan, chlorphoxim or permethrin. The populations of the taxa react differently to the insecticides; some stay the same or are reduced while others increase, due certainly to their low susceptibility, the shortness of their life cycle or the diminution of the spatial and trophic competition. (Résumé d'auteur) specialized INSECTE AQUATIQUE TEST INSECTICIDE STRUCTURE DU PEUPLEMENT ANALYSE FACTORIELLE TOXICITE COTE D'IVOIRE GUINEE 052LUTIN03 036EAUCON01 123 1 111-127 1991 https://www.documentation.ird.fr/hor/fdi:35706 [F B35706] https://www.documentation.ird.fr/hor/fdi:35706 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_5/b_fdi_31-32/35706.pdf IRD - Base Horizon / Pleins textes 1992-08-04 2015-10-22 fdi:35706 fre