The effects of Nosema algerae on the development of Plasmodium yoelii nigeriensis in Anopheles stephensi.
Experimental simultaneous infections of Anopheles stephensi (Diptera: Culicidae) with Nosema algerae (Microsporida: Nosematidae) and Plasmodium yoelii nigeriensis under standardized laboratory conditions showed partial suppression of the malaria parasite. At 9 days after an infective bloodmeal, the oocysts in the midgut were counted; 12.1%-66.6% of the double-infected mosquitoes exhibited no oocysts, whereas only 4.5%-12% of the control group showed no oocysts. The mean reduction in oocyst numbers under the influence of Nosema was 84.68%. At 14 days after infection with Plasmodium, the amount of sporozoites was examined; their mean reduction in eight experiments was 70%.
Schenker
W
W
Institut für Medizinische Parasitologie der Universität Bonn, Federal Republic of Germany.
Maier
W A
WA
Seitz
H M
HM
D000818:Animals; D000852:Anopheles / Q000469:parasitology*; D007303:Insect Vectors / Q000469:parasitology*; D008288:Malaria / Q000635:transmission*; D016818:Nosema / Q000502:physiology*; D010572:Pest Control, Biological; D010967:Plasmodium yoelii / Q000254:growth & development*