Effects of Non-Susceptible Hosts on the Infection with Trypanosoma cruzi of the Vector Triatoma infestans: An Experimental Model

We tested experimentally the effects of the presence of non-susceptible hosts on the infection with Trypanosoma cruzi of the vector Triatoma infestans. The experiment consisted in two treatments: with chickens, including two chickens (non-susceptible hosts) and two infected guinea pigs (susceptible...

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Autores principales:	Vázquez, Diego P., Gurtler, Ricardo Esteban
Publicado:	1999
Materias:	Chagas disease Host-feeding patterns Infection Transmission Triatoma infestans Triatominae Trypanosoma cruzi Zooprophylaxis Cavia Gallus gallus Trypanosoma animal article chicken disease carrier disease model disease predisposition disease transmission feeding behavior guinea pig parasitology pathogenicity time Triatoma Animals Chagas Disease Chickens Disease Models, Animal Disease Susceptibility Feeding Behavior Guinea Pigs Insect Vectors Time Factors
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00740276_v94_n3_p413_Vazquez http://hdl.handle.net/20.500.12110/paper_00740276_v94_n3_p413_Vazquez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00740276_v94_n3_p413_Vazquez
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spelling	paper:paper_00740276_v94_n3_p413_Vazquez2023-06-08T15:06:58Z Effects of Non-Susceptible Hosts on the Infection with Trypanosoma cruzi of the Vector Triatoma infestans: An Experimental Model Vázquez, Diego P. Gurtler, Ricardo Esteban Chagas disease Host-feeding patterns Infection Transmission Triatoma infestans Triatominae Trypanosoma cruzi Zooprophylaxis Cavia Gallus gallus Triatoma infestans Triatominae Trypanosoma Trypanosoma cruzi animal article Chagas disease chicken disease carrier disease model disease predisposition disease transmission feeding behavior guinea pig parasitology pathogenicity time Triatoma Trypanosoma cruzi Animals Chagas Disease Chickens Disease Models, Animal Disease Susceptibility Feeding Behavior Guinea Pigs Insect Vectors Time Factors Triatoma Trypanosoma cruzi We tested experimentally the effects of the presence of non-susceptible hosts on the infection with Trypanosoma cruzi of the vector Triatoma infestans. The experiment consisted in two treatments: with chickens, including two chickens (non-susceptible hosts) and two infected guinea pigs (susceptible hosts), and without chickens, including only two infected guinea pigs. The hosts were held unrestrained in individual metal cages inside a closed tulle chamber. A total of 200 uninfected T. infestans third instar nymphs were liberated in each replica, collected on day 14, and examined for infection and blood meal sources on day 32-36. The additional presence of chickens relative to infected guinea pigs: (a) significantly modified the spatial distribution of bugs; (b) increased significantly the likelihoods of having a detectable blood meal on any host and molting to the next instar; (c) did not affect the bugs' probability of death by predation; and (d) decreased significantly the overall percentage of T. infestans infected with T. cruzi. The bugs collected from inside or close to the guinea pigs' cages showed a higher infection rate (71-88%) than those collected from the chickens' cages (22-32%). Mixed blood meals on chickens and guinea pigs were detected in 12-21% of bugs. Although the presence of chickens would decrease the overall percentage of infected bugs in short term experiments, the high rate of host change of T. infestans would make this difference fade out if longer exposure times had been provided. Fil:Vázquez, D.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gürtler, R.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00740276_v94_n3_p413_Vazquez http://hdl.handle.net/20.500.12110/paper_00740276_v94_n3_p413_Vazquez
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Chagas disease Host-feeding patterns Infection Transmission Triatoma infestans Triatominae Trypanosoma cruzi Zooprophylaxis Cavia Gallus gallus Triatoma infestans Triatominae Trypanosoma Trypanosoma cruzi animal article Chagas disease chicken disease carrier disease model disease predisposition disease transmission feeding behavior guinea pig parasitology pathogenicity time Triatoma Trypanosoma cruzi Animals Chagas Disease Chickens Disease Models, Animal Disease Susceptibility Feeding Behavior Guinea Pigs Insect Vectors Time Factors Triatoma Trypanosoma cruzi
spellingShingle	Chagas disease Host-feeding patterns Infection Transmission Triatoma infestans Triatominae Trypanosoma cruzi Zooprophylaxis Cavia Gallus gallus Triatoma infestans Triatominae Trypanosoma Trypanosoma cruzi animal article Chagas disease chicken disease carrier disease model disease predisposition disease transmission feeding behavior guinea pig parasitology pathogenicity time Triatoma Trypanosoma cruzi Animals Chagas Disease Chickens Disease Models, Animal Disease Susceptibility Feeding Behavior Guinea Pigs Insect Vectors Time Factors Triatoma Trypanosoma cruzi Vázquez, Diego P. Gurtler, Ricardo Esteban Effects of Non-Susceptible Hosts on the Infection with Trypanosoma cruzi of the Vector Triatoma infestans: An Experimental Model
topic_facet	Chagas disease Host-feeding patterns Infection Transmission Triatoma infestans Triatominae Trypanosoma cruzi Zooprophylaxis Cavia Gallus gallus Triatoma infestans Triatominae Trypanosoma Trypanosoma cruzi animal article Chagas disease chicken disease carrier disease model disease predisposition disease transmission feeding behavior guinea pig parasitology pathogenicity time Triatoma Trypanosoma cruzi Animals Chagas Disease Chickens Disease Models, Animal Disease Susceptibility Feeding Behavior Guinea Pigs Insect Vectors Time Factors Triatoma Trypanosoma cruzi
description	We tested experimentally the effects of the presence of non-susceptible hosts on the infection with Trypanosoma cruzi of the vector Triatoma infestans. The experiment consisted in two treatments: with chickens, including two chickens (non-susceptible hosts) and two infected guinea pigs (susceptible hosts), and without chickens, including only two infected guinea pigs. The hosts were held unrestrained in individual metal cages inside a closed tulle chamber. A total of 200 uninfected T. infestans third instar nymphs were liberated in each replica, collected on day 14, and examined for infection and blood meal sources on day 32-36. The additional presence of chickens relative to infected guinea pigs: (a) significantly modified the spatial distribution of bugs; (b) increased significantly the likelihoods of having a detectable blood meal on any host and molting to the next instar; (c) did not affect the bugs' probability of death by predation; and (d) decreased significantly the overall percentage of T. infestans infected with T. cruzi. The bugs collected from inside or close to the guinea pigs' cages showed a higher infection rate (71-88%) than those collected from the chickens' cages (22-32%). Mixed blood meals on chickens and guinea pigs were detected in 12-21% of bugs. Although the presence of chickens would decrease the overall percentage of infected bugs in short term experiments, the high rate of host change of T. infestans would make this difference fade out if longer exposure times had been provided.
author	Vázquez, Diego P. Gurtler, Ricardo Esteban
author_facet	Vázquez, Diego P. Gurtler, Ricardo Esteban
author_sort	Vázquez, Diego P.
title	Effects of Non-Susceptible Hosts on the Infection with Trypanosoma cruzi of the Vector Triatoma infestans: An Experimental Model
title_short	Effects of Non-Susceptible Hosts on the Infection with Trypanosoma cruzi of the Vector Triatoma infestans: An Experimental Model
title_full	Effects of Non-Susceptible Hosts on the Infection with Trypanosoma cruzi of the Vector Triatoma infestans: An Experimental Model
title_fullStr	Effects of Non-Susceptible Hosts on the Infection with Trypanosoma cruzi of the Vector Triatoma infestans: An Experimental Model
title_full_unstemmed	Effects of Non-Susceptible Hosts on the Infection with Trypanosoma cruzi of the Vector Triatoma infestans: An Experimental Model
title_sort	effects of non-susceptible hosts on the infection with trypanosoma cruzi of the vector triatoma infestans: an experimental model
publishDate	1999
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00740276_v94_n3_p413_Vazquez http://hdl.handle.net/20.500.12110/paper_00740276_v94_n3_p413_Vazquez
work_keys_str_mv	AT vazquezdiegop effectsofnonsusceptiblehostsontheinfectionwithtrypanosomacruziofthevectortriatomainfestansanexperimentalmodel AT gurtlerricardoesteban effectsofnonsusceptiblehostsontheinfectionwithtrypanosomacruziofthevectortriatomainfestansanexperimentalmodel
_version_	1768542881213054976

Effects of Non-Susceptible Hosts on the Infection with Trypanosoma cruzi of the Vector Triatoma infestans: An Experimental Model

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