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Experimental infection of Culex (Culex) quinquefasciatus and Aedes (Stegomyia) aegypti with Wuchereria bancrofti
Mem. Inst. Oswaldo Cruz ; 93(6): 855-60, Nov.-Dec. 1998. ilus, tab, graf
Article in English | LILACS | ID: lil-223895
ABSTRACT
A study was conducted to determine the susceptibility of local strains of Culex quinquefasciatus and Aedes aegypti to infection with the strain of Wuchereria bancrofti that occurs in Maceió, State of Alagoas, Brazil. Cx. quinquefasciatus blood fed simultaneously on the same microfilariae carrier ingested more blood and 2-3x more microfilariae than Ae. aegypti. Survival rates of both species of insects living for 21 days after blood feeding on microfilaraemic patients were not significantly different from the survival rates of mosquitoes that blood fed on amicrofilaraemic individuals. W. bancrofti parasites underwent normal development in Cx. quinquefasciatus, with third stage larvae first being recorded on the 11th day post infection, and their numbers increasing thereafter. Development of filariae in Ae. aegypti did not proceed beyond the first larval stage, and there was a progressively increasing number of non-viable larvae with the passage of time. It is concluded that Ae. aegypti is not involved in the transmission of W. bancrofti in Maceió.
Subject(s)
Full text: Available Index: LILACS (Americas) Main subject: Wuchereria bancrofti / Aedes / Culex Limits: Animals Country/Region as subject: South America / Brazil Language: English Journal: Mem. Inst. Oswaldo Cruz Journal subject: Tropical Medicine / Parasitology Year: 1998 Type: Article

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Full text: Available Index: LILACS (Americas) Main subject: Wuchereria bancrofti / Aedes / Culex Limits: Animals Country/Region as subject: South America / Brazil Language: English Journal: Mem. Inst. Oswaldo Cruz Journal subject: Tropical Medicine / Parasitology Year: 1998 Type: Article