Effects of azadirachtin in Rhodnius prolixus: data and hypotheses
نویسندگان
چکیده
منابع مشابه
Azadirachtin-Induced Sterilization in Mature Females of Rhodnius prolixus
The effects of azadiraehtin A , given oral ly, on the reproduct ion of mature females of Rhodnius prolixus were studied. Azadiraeht in A caused a reduction in oocyte growth and consequently in the egg product ion in a dose-dependent manner. Eggs layed had no alteration in their viabil it ies. A significant correlat ion between these effects and the titers of both vi tel logenin in the haemolymp...
متن کاملSalivary apyrase of Rhodnius prolixus
Joao J. F. SARKIS,* Jorge A. GUIMARAESt and Jose M. C. RIBEIRO$ *Department of Biochemistry, Federal University of Rio Grande do Sul, Instituto de Biosciencias, 90.000 Porto Alegre, RS, Brazil, tDepartment of Biochemistry, Federal University of Rio de Janeiro, Centro de Ciencias da Saude, Bloco H, 21.910 Rio de Janeiro, RJ, Brazil, and $Department of Tropical Public Health, Harvard School of Pu...
متن کامل[Blood-feeding of Rhodnius prolixus].
Triatomines (Hemiptera: Reduviidae) are blood-sucking insect vectors of the protozoan Trypanosoma cruzi which is the causative agent of Chagas' disease. Rhodnius prolixus is the most epidemiologically important vector of T. cruzi in Colombia. Triatomines are regarded to be vessel-feeders as they obtain their blood meals from vertebrate hosts by directly inserting their mouthparts into vessels. ...
متن کاملFeeding and Molt Inhibition by Azadirachtins A, B, and 7-Acetyl-azadirachtin A in Rhodnius prolixus Nymphs
The antifeedant and antimolting effects of azadirachtins A and B, and of a synthetic derivative, 7-acetyl-azadirachtin A were examined. Given through a blood meal, the effective dose (ED50) for the antifeedant effect ranged from 25 to 30 ng/ml of blood for the three compounds. ATP, a phagostimulant, also given orally, reversed the antifeedant action of azadirachtin A. The ED50 values for molt i...
متن کاملMetalloproteases in Trypanosoma rangeli-infected Rhodnius prolixus.
Protease activities in the haemolymph and fat body in a bloodsucking insect, Rhodnius prolixus, infected with Trypanosoma rangeli, were investigated. After SDS-polyacrylamide gel electrophoresis containing gelatin as substrate, analysis of zymograms performed on samples of different tissues of controls and insects inoculated or orally infected with short or long epimastigotes of T. rangeli, dem...
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ژورنال
عنوان ژورنال: Memórias do Instituto Oswaldo Cruz
سال: 1991
ISSN: 0074-0276
DOI: 10.1590/s0074-02761991000600025