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Artículo

Biological Control of the Chagas Disease Vector Triatoma infestans with the Entomopathogenic Fungus Beauveria bassiana Combined with an Aggregation Cue: Field, Laboratory and Mathematical Modeling Assessment

Forlani, LucasIcon ; Pedrini, NicolásIcon ; Girotti, Juan RobertoIcon ; Mijailovsky, Sergio JavierIcon ; Cardozo, Rubén Marino; Gentile, Alberto G.; Hernández Suárez, Carlos; Rabinovich, Jorge EduardoIcon ; Juarez, Marta PatriciaIcon
Fecha de publicación: 05/2015
Editorial: Public Library of Science
Revista: Neglected Tropical Diseases
ISSN: 1935-2735
Idioma: Inglés
Tipo de recurso: Artículo publicado

Resumen

Background: Current Chagas disease vector control strategies, based on chemical insecticide spraying, are growingly threatened by the emergence of pyrethroid-resistant Triatoma infestans populations in the Gran Chaco region of South America. Methodology and findings: We have already shown that the entomopathogenic fungus Beauveria bassiana has the ability to breach the insect cuticle and is effective both against pyrethroid-susceptible and pyrethroid-resistant T. infestans, in laboratory as well as field assays. It is also known that T. infestans cuticle lipids play a major role as contact aggregation pheromones. We estimated the effectiveness of pheromonebased infection boxes containing B. bassiana spores to kill indoor bugs, and its effect on the vector population dynamics. Laboratory assays were performed to estimate the effect of fungal infection on female reproductive parameters. The effect of insect exuviae as an aggregation signal in the performance of the infection boxes was estimated both in the laboratory and in the field. We developed a stage-specific matrix model of T. infestans to describe the fungal infection effects on insect population dynamics, and to analyze the performance of the biopesticide device in vector biological control. Conclusions: The pheromone-containing infective box is a promising new tool against indoor populations of this Chagas disease vector, with the number of boxes per house being the main driver of the reduction of the total domestic bug population. This ecologically safe approach is the first proven alternative to chemical insecticides in the control of T. infestans. The advantageous reduction in vector population by delayedaction fungal biopesticides in a contained environment is here shown supported by mathematical modeling.
Palabras clave: Biological Control , Entomopathogenic Fungi , Triatoma Infestans , Population Dynamics , Mathematical Modeling , Cuticle Lipids
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution 2.5 Unported (CC BY 2.5)
Identificadores
URI: http://hdl.handle.net/11336/48986
DOI: http://dx.doi.org/10.1371/journal.pntd.0003778
URL: http://journals.plos.org/plosntds/article?id=10.1371/journal.pntd.0003778
Colecciones
Articulos(IPE) [156]
Articulos de INST.DE PATOLOGIA EXPERIMENTAL
Articulos(CEPAVE) [654]
Articulos de CENTRO DE EST.PARASITOL.Y DE VECTORES (I)
Articulos(INIBIOLP) [215]
Articulos de INST.DE INVEST.BIOQUIMICAS DE LA PLATA
Citación
Forlani, Lucas; Pedrini, Nicolás; Girotti, Juan Roberto; Mijailovsky, Sergio Javier; Cardozo, Rubén Marino; et al.; Biological Control of the Chagas Disease Vector Triatoma infestans with the Entomopathogenic Fungus Beauveria bassiana Combined with an Aggregation Cue: Field, Laboratory and Mathematical Modeling Assessment; Public Library of Science; Neglected Tropical Diseases; 9; 5; 5-2015; 1-23; e0003778
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