EFEKTIVITAS INSEKTISIDA ORGANOCHLORIN OMS-1558 DALAM PENGENDALIAN VEKTOR MALARIA ANOPHELES ACONITUS DONITZ YANG SUDAH KEBAL TERHADAP DDT

Abstract

A village-scale trial of organochlorin compound OMS-1558 as an 70% water-dispersible powder (wdp) and applied as an indoor residual spray at 2 gr/m², was carried out against the DDT—resistant malaria vector Anopheles aconitus near Semarang, Central Java.

Result of this trial, as evaluated by human-vector contact rates, resting densities and parous rate showed effectiveness against the vector populations for only about one week or less. In contact bioassay tests mortalities of 50% or greater for one week, while mortalities from air-borne bioassay tests were negligible. It was concluded that DDT—resistant malaria vector can not be controlled by this insecticide. The result of susceptibility tests showed there is cross resistance between DDT and new organochlorin OMS-1558.