Chagas Disease: an Ecological Appraisal With Special Emphasis on its Insect Vectors

Ze­l­e­dón­, Rodri­go; Je, Rabinovich

doi:10.1146/annurev.en.26.010181.000533

Cited by 194 publications

(129 citation statements)

References 50 publications

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“…The high incidence of T. vitticeps in domicile during hot months is in agreement with the previous observation of the high temperature correlation and the increased avidity of the insect to seek blood meal (Zeledón & Rabinovich 1981), which is responsible for the starting point and the duration of the flight (Schofield et al 1992). However, it is worth mentioning that no correlation has been found between high temperature and incidence of triatomines, based on data obtained by the National Meteorology Institute, in the 1989/1995 period.…”

Section: Discussionsupporting

confidence: 89%

An Investigation on the Ecology of Triatoma vitticeps (Stal, 1859) and its Possible Role in the Transmission of Trypanosoma cruzi, in the Locality of Triunfo, Santa Maria Madalena Municipal District, State of Rio de Janeiro, Brazil

Gonçalves¹,

Oliveira

Dias

et al. 1998

Mem. Inst. Oswaldo Cruz

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Section: Discussionsupporting

confidence: 89%

An Investigation on the Ecology of Triatoma vitticeps (Stal, 1859) and its Possible Role in the Transmission of Trypanosoma cruzi, in the Locality of Triunfo, Santa Maria Madalena Municipal District, State of Rio de Janeiro, Brazil

Gonçalves¹,

Oliveira

Dias

et al. 1998

Mem. Inst. Oswaldo Cruz

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“…P. geniculatus se considera silvestre por encontrarse en hábitat de bosque (3) aunque, en algunos casos, presenta domiciliación, como en el caso del municipio de Amalfi, Antioquia (17). E. cuspidatus se considera como una especie silvestre muy relacionada con nidos de aves, que ocasionalmente se ha localizado en el intradomicilio por su atracción a la luz artificial (18). Los índices entomológicos obtenidos en esta investigación sugieren una infestación reciente; además, la ausencia de huevos, estadios inmaduros, o exuvias en los ambientes donde se recolectaron los adultos sugeriría que E. cuspidatus podría colonizar ambientes intra y peridomiciliarios de la localidad estudiada.…”

Section: Discussionunclassified

Triatominos (Reduviidae: Triatominae) en un foco de enfermedad de Chagas en Talaigua Nuevo (Bolívar, Colombia).

Pineda

Suárez²

2005

biomedica

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Introducción. Se describen las características e importancia epidemiológica de los triatominos presentes en un foco de enfermedad de Chagas en el municipio de Talaigua Nuevo, departamento de Bolívar. Objetivo. Determinar y correlacionar características ecológicas de los triatominos presentes en un foco de Chagas en el municipio de Talaigua Nuevo, Bolívar. Materiales y métodos. La captura de los triatominos se realizó en 300 domicilios del casco urbano en los que se revisaron el intra y peridomicilio, así como ambientes extradomésticos (palmas de vino y cúmulos de madera y leña). Resultados. Se capturaron 103 triatominos pertenecientes a cuatro especies: Triatoma maculata, Eratyrus cuspidatus, Panstrongylus geniculatus y Rhodnius prolixus. T. maculata, fue la especie predominante (92,3%). El 93% de los triatominos fueron capturados en ambientes intradomiciliarios. Conclusión. Se reporta por primera vez en Bolívar la captura de individuos de T. maculata infectados naturalmente con Trypanosoma sp. Se amplía la distribución geográfica de P. geniculatus y R. prolixus. El análisis de correspondencias múltiples no encontró ninguna relación significativa entre las características físicas de las viviendas y la presencia de triatominos dentro de ellas.Palabras clave: insectos vectores, Reduviidae, Triatominae, Triatoma, enfermedad de Chagas. Triatomines (Reduviidae: Triatominae) in a Chagas disease focus in Talaigua Nuevo (Bolívar, Colombia)Introduction. The epidemiological importance and ecological characteristics of triatomines were investigated in a Chagas disease focus in Talaigua Nuevo, Bolivar Province. Objective. To describe and correlate the ecological characteristics of triatomines in a Chagas disease focus. Materials and methods. Triatomines were collected in 300 domiciles located in the urban zone of Talaigua Nuevo. This included inspection of microhabitats in and around the domestic environment, and also wine palms, woodpiles and firewood. Results. Among the 103 triatomines collected, four species were identified--Triatoma maculata, Eratyrus cuspidatus, Panstrongylus geniculatus, and Rhodnius prolixus. T. maculata was the most abundant species (92.23%). The majority (93%) were collected in the intradomiciliary environment. Conclusion. Individuals of T. maculata naturally infected with Trypanosoma were recorded for the first time in Bolivar Province. The distribution range of P. geniculatus and R. prolixus was expanded. Using a multiple correspondence analysis, no relationship was discerned between the house type and occurrence of triatomines.

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“…No obstante, la chinche T. dimidiata es la principal especie transmisora en el Sur de México y Centroamérica (Schofi eld 2002). Se cree que la importancia epidemiológica de T. dimidiata en esta región se basa en su amplio grado de adaptabilidad, debido a que habita diversos ecosistemas, incluyendo selvas húmedas y secas (Zeledón et al 2001), diferentes altitudes (0-1750 msnm) (Tabaru et al 1999), explota diversas fuentes alimenticias (Sasaki et al 2003), tiene alta diversidad de sitios de descanso (Petana 1971, Zeledón & Rabinovich 1981, Monroy et al 2003, gran capacidad de colonización de las viviendas (Arzube 1966, Zeledón et al 1973 y alta longevidad y capacidad de dispersión (Campos 1931, Paloma 1940, Rosabal 1969, Schofi eld 2002. Varios de estos factores tienen un efecto directo sobre las tasas de transmisión de T. cruzi a humanos.…”

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Indicadores de infestación, colonización e infección de Triatoma dimidiata (Latreille) (Hemiptera: Reduviidae) en Campeche, México

Hernández¹,

Rebollar-Téllez²,

Infante³

et al. 2010

Neotrop. entomol.

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Indicators of Infestation, Colonization and Infection of Triatoma dimidiata (Latreille) (Hemiptera:Reduviidae) in Campeche, México ABSTRACT -Triatoma dimidiata (Latreille) is considered to be one of the primary vectors of Chagas disease in Southern Mexico and Central America. The objective of the present study was to obtain ecological information on T. dimidiata in two rural communities of Campeche, Mexico, where the vector is poorly studied. Our work consisted of monthly samplings carried out during one-year time at three levels: sylvatic, peridomestic and intradomestic, in order to estimate the population abundance of this species and its rate of infection with Trypanosoma cruzi. Triatoma dimidiata was the unique vector of this disease collected in San Juan Bautista Sakcabchen (SJBS) and Crucero San Luis (CSL). The total of 145 individuals were captured in SJBS; from these, 26.9%, 20% and 53.1% were collected in the sylvatic, peridomestic and intradomestic area, respectively. In CSL captures yielded 108 individuals: 40.7% in the sylvatic area, 20.4% peridomestic and 38.9% intradomestic. We found no correlation between climatic variables and population abundance of T. dimidiata. Dataset obtained suggests that individuals from the sylvatic area exhibit a high rate of natural infection by T. cruzi, with monthly percentages up to 61.5% for SJBS and 50% for CSL. At the peri and intradomestic level, the reservoirs apparently play an important role in the transmission, as the seroprevalence in dogs was 61.5% y 65.4%, for SJBS y CSL, respectively. Based on these fi ndings, it was concluded that inhabitants of both communities are at a high risk of Chagas disease infection.

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Chagas Disease: an Ecological Appraisal With Special Emphasis on its Insect Vectors

Cited by 194 publications

References 50 publications

An Investigation on the Ecology of Triatoma vitticeps (Stal, 1859) and its Possible Role in the Transmission of Trypanosoma cruzi, in the Locality of Triunfo, Santa Maria Madalena Municipal District, State of Rio de Janeiro, Brazil

An Investigation on the Ecology of Triatoma vitticeps (Stal, 1859) and its Possible Role in the Transmission of Trypanosoma cruzi, in the Locality of Triunfo, Santa Maria Madalena Municipal District, State of Rio de Janeiro, Brazil

Triatominos (Reduviidae: Triatominae) en un foco de enfermedad de Chagas en Talaigua Nuevo (Bolívar, Colombia).

Indicadores de infestación, colonización e infección de Triatoma dimidiata (Latreille) (Hemiptera: Reduviidae) en Campeche, México

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