Revue du genre Coquilletidia (Diptera : Culicidae) a Madagascar et description de la larve de Cq. grandidieri (Blanchard; 1905)

"Review of the genus Coquilletidia (Diptera : Culicidae) in Madagascar and description of the larva of Cq.grandidieri (Blanchard; 1905)"" : The genus Coquilletidia includes some of the mosquitoes involved in the transmission of numerous arbovirosis. Adults are locally abundant and very aggressive for men. In Madagascar; thus genus concerns 3 species among which 2 are endemic and had not been described at larval stage this far. The authors describe a single larva of Coquilletidia collected at Ankazobe in the Middle West of Madagascar; at an altitude of 1200 meters.The geographical distribution of Coquilletidia adults collected in various bio-climatic zones in Madagascar; combined with observed morphological characters; permit us to attribute this larva to Cq. grandidieri."

Donnees recentes sur la sensibilite d'Anopheles arabiensis et d'Anopheles funestus aux pyrethrinoides et au DDT sur les Hautes Terres Centrales de Madagascar -Resultats preliminaires montrant une absence de la mutation kdr chez An. arabiensis

"Recent observations on the sensitivity to pyrethroids and DDT of Anopheles arabiensis and Anopheles funestus in the central Highlands of Madagascar; preliminary resultson the absence of the kdr mutation in An. arabiensis"". Anopheles arabiensis and Anopheles funestus are the principal vectors of malaria on the central highlands of Madagascar. These two species of mosquito are directly or indirectly the targets of indoor insecticide spread. The survey of the susceptibility of these two vectors to insecticides is essential specifying for the anti-vectorial current directives and for the future programs. This paper describes : - the recent tests of susceptibility and the study of the knock-down effect of four pyrethroids (deltamethrin 0.50"

Epidemiologie du paludisme sur les hautes terres malgaches depuis 1878

Le paludisme est decrit sur les cotes malgaches depuis le XVIe siecle; mais la premiere epidemie liee a l'introduction de plasmodium falciparum n'est survenue sur les hautes terres qu'en 1878. La deuxieme epidemie; de 1896; a permis l'installation d'une transmission endemique jusqu'a la compagne d'eridication des annees 1950. L'arret progressif des activites antipaludiques dans les annees 1970 a permis une reinfestation progressive des hautes terres et la survenue d'une epidemie meurtriere de 1986 a 1988 qui redevient endemique depuis 1989. Ces trois epidemies ont en commun une repartition geographique heterogene; un mode de transmission instable et une tres forte morbidite-mortalite