Feeding sources and natural infection of Belminus herreri (Hemiptera, Reduviidae, Triatominae) from dwellings in Cesar, Colombia

Sandoval, Claudia Magaly; Duarte, Rosemere; Gutiérrez, Reinaldo; Rocha, Dayse da Silva; Angulo, Vı́ctor Manuel; Esteban, Lida; Reyes, Marlen; Jurberg, José; Galvão, Cléber

doi:10.1590/s0074-02762004000200004

Cited by 55 publications

(38 citation statements)

References 11 publications

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“…17 Belminus herreri was positive for only one feeding source, Blattidae. 18 In localities of Jalisco, Mexico, T. longipennis had different preferences depending on the habitat. For example, in Tepehuaje de Morelos, its blood meals were mainly from chicken, opossum, and pig, whereas in Los Guerreros, rats were the principal source.…”

Section: Introductionmentioning

confidence: 99%

Entomological Indices, Feeding Sources, and Molecular Identification of Triatoma phyllosoma (Hemiptera: Reduviidae) One of the Main Vectors of Chagas Disease in the Istmo de Tehuantepec, Oaxaca, Mexico

Villalobos

Martínez‐Hernández²,

Torre³

et al. 2011

The American Society of Tropical Medicine and Hygiene

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Abstract. The purpose of this study was to conduct an entomological analysis, determination of feeding sources, and molecular identification of triatomines in five communities of the Istmo de Tehuantepec, Oaxaca. The only found species in two of five searched communities (San Mateo del Mar and Tehuantepec City) was Triatoma phyllosoma . Colonization indices were high in both communities. In San Mateo del Mar, the insects were found indoors and in Tehuantepec City in peridomestic areas. The Trypanosoma cruzi infection indices were 2.1% in San Mateo del Mar and 39.4% in Tehuantepec City. This difference could be related to the high numbers of triatomine feeding on hens in the former community. In contrast, in Tehuantepec, dogs were the principal triatomine feeding sources. All nymphs and adults that were genetically analyzed belonged to the species T. phyllosoma . Low levels of genetic variation were found between vectors from both communities.

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Section: Introductionmentioning

confidence: 99%

Entomological Indices, Feeding Sources, and Molecular Identification of Triatoma phyllosoma (Hemiptera: Reduviidae) One of the Main Vectors of Chagas Disease in the Istmo de Tehuantepec, Oaxaca, Mexico

Villalobos

Martínez‐Hernández²,

Torre³

et al. 2011

The American Society of Tropical Medicine and Hygiene

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“…Como visitante frecuente se ha reportado P. geniculatus y, como esporádicos, R. (11)(12)(13)(14)(15).…”

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Attalea butyracea próximas a las viviendas como posible fuente de infestación domiciliaria por Rhodnius prolixus (Hemiptera: Reduviidae) en los Llanos Orientales de Colombia

2012

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Introducción. La presencia de Rhodnius prolixus en palmas en los Llanos Orientales, zona de alto riesgo para la infección por Trypanosoma cruzi, y su frecuente visita al intradomicilio, hacen necesario confirmar este hábitat como posible fuente de infestación. Objetivo. Comprobar la infestación por R. prolixus en Attalea butyracea próximas a viviendas en los Llanos Orientales. Materiales y métodos. Se examinaron palmas próximas a las viviendas rurales en los departamentos de Casanare y Arauca, utilizando trampas con cebo vivo, y mediante búsqueda activa y vigilancia comunitaria, se recolectaron triatominos en el intradomicilio. Con criterios morfológicos se determinó la especie recolectada y con la técnica de PCR se estableció la infección natural. Resultados. Se recolectaron 529 ninfas y adultos de R. prolixus y 5 ninfas de Eratyrus mucronatus en 111/172 (64,53 %) A. butyracea ubicadas a menos de 500 m de las viviendas. En el mismo periodo se recolectaron en el intradomicilio 132 R. prolixus y especímenes de Psammolestes arthuri, Cavernicola pilosa, Triatoma maculata, Panstrongylus geniculatus y 20 ninfas de E. mucronatus en un cúmulo de adobes en el corredor de una vivienda. Se detectó infección natural por T. cruzi en 28,76 % de R. prolixus de palmas y 30 % del intradomicilio. Conclusiones. Los resultados del presente estudio revelan una nueva situación epidemiológica de transmisión de la enfermedad de Chagas, caracterizada por las altas tasas de infestación de R. prolixus en palmas próximas a viviendas y su frecuente intrusión; su impacto debe ser evaluado para diseñar medidas de prevención de la enfermedad.Palabras clave: Rhodnius, Triatominae, enfermedad de Chagas, Trypanosoma cruzi, Colombia.Attalea butyracea palms adjacent to housing as a source of infestation by Rhodnius prolixus (Hemiptera: Reduviidae) Introduction. The presence of Rhodnius prolixus in palms on the eastern plains area of Colombia provide a high risk for infection with Trypanosoma cruzi. Intensive surveillance of the palm tree habitat are necessary to confirm the presence of bugs and provide evidence that this habitat is a source of house infestations. Objective. The infestation by R. prolixus in the palm, Attalea butyracea, was investigated near homes for assessment of risk. Materials and methods. Palms were examined for Rhodnius bugs adjacent to rural housing in the eastern plains provinces of Casanare and Arauca, Colombia. Bait traps were used as well as an active search by the investigators and a community watch program to collect intradomiciliary triatomine bugs. Collected species were identified by morphological criteria,and natural T.cruzi infections in the triatomine bugs were detected by the PCR technique. Results. In 111 of 172 (64.5%) palms (A. butyracea) inspected, 529 nymphs and adults of R. prolixus and 5 nymphs of Eratyrus mucronatus were collected. The A. butyracea were located within 500 m of housing. In the same period, 132 R. prolixus and specimens of the triatomine species Psammolestes arthuri, Cavernicola pilosa, Tr...

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“…The latter observation demonstrates the opportunistic nature of these triatomines, where the nymphs performed hemolymphagy on termites and other arthropods present in the termite mound. Hemolymphagy has also been observed in other triatomines, such as Triatoma rubrovaria, Rhodnius brethesi, and Belminus herreri 16,17,18 . The microclimatic parameters that were measured in the interior of the colonies demonstrated little intrinsic variation throughout the year, which appears to be independent of the variations in the outer temperature and humidity.…”

Section: A B C D Ementioning

confidence: 92%

Ecoepidemiology and biology of Eratyrus mucronatus Stål, 1859 (Hemiptera: Reduviidae: Triatominae), a sylvatic vector of Chagas disease in the Brazilian Amazon

Monte

Tadei

Farias

2014

Rev. Soc. Bras. Med. Trop.

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Chagas, 1909. Howev er, little is known regarding the biology and ecoepidemiology of this triatomine in the Brazilian Amazon. The present study describes the biology of E. mucronatus grown under laboratory conditions and the epidemiological aspects of its natural breeding sites. Methods: Five colonies were monitored in the fi eld for 3 years. Temperature and humidity measurements were taken in the mornings and afternoons at the natural breeding sites, and the behavior and distribution of the nymphs and adults were observed in the wild colony. We also monitored the life cycle under controlled laboratory conditions. Results: Some factors that were considered decisive for the establishment of these colonies were present at all of the colonies studied in the fi eld. These factors included an active termite nest, a vertebrate for repast, and dry and shaded substrates with temperatures of 24-28°C and with humidity of 80-90%. A generation was developed in 274 days under these microclimatic conditions in the laboratory. Conclusions: The climatic variables described in the fi eld indicate that these environmental parameters have a limiting effect on the dispersal and colonization of E. mucronatus to new environments. In addition, the long period of development to adulthood demonstrates that only one generation can develop per year even under the more favorable laboratory conditions. Keywords: Eratyrus mucronatus. Chagas disease. Ecoepidemiological. Biological cycle.The genus Eratyrus Stål, 1859 comprises only two species, Eratyrus cuspidatus and Eratyrus mucronatus; however, only E. mucronatus has been found in Brazil. Both species are considered sylvatic and potential vectors of Trypanosoma cruzi Chagas, 1909 1,2 . These insects are hematophagous throughout their developmental phases, are exopterygotes, and have a hemi-metabolic biological cycle, with the time gaps between each ecdysis conditioned to physiological and microclimatic variables. Experiments regarding the biology of certain triatomine species have revealed that their biological cycles vary from three to fi fteen months 3-5 .Triatomines occupy diverse natural ecotopes, such as mammal and bird nests, caves, palm trees, or rock fi ssures 1 . Studies 1,6 have shown that E. mucronatus is a sylvatic triatomine that is associated with the nests of Xenarthra, Didelphidae, and colonies of Chiroptera in tree hollows and caves. According to some authors 2,7 E. mucronatus is also found in colonies with Triatoma maculata (a secondary vector of T. cruzi in Venezuela) and with Cavernicola pilosa (a vector of Schizotrypanum in bats and of T. cruzi).Eratyrus mucronatus has been recorded in the Brazilian States of Amazonas, Pará, Goiás, Maranhão, Mato Grosso, and Rondônia 8,9 ; however, intra-domiciliary colonization has not been recorded. In contrast, adult individuals have been captured outside and inside human dwellings in the rural areas of Manaus (author observation), and a few specimens were found to be naturally infected with T. cruzi; therefore, this species is...

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Feeding sources and natural infection of Belminus herreri (Hemiptera, Reduviidae, Triatominae) from dwellings in Cesar, Colombia

Cited by 55 publications

References 11 publications

Entomological Indices, Feeding Sources, and Molecular Identification of Triatoma phyllosoma (Hemiptera: Reduviidae) One of the Main Vectors of Chagas Disease in the Istmo de Tehuantepec, Oaxaca, Mexico

Entomological Indices, Feeding Sources, and Molecular Identification of Triatoma phyllosoma (Hemiptera: Reduviidae) One of the Main Vectors of Chagas Disease in the Istmo de Tehuantepec, Oaxaca, Mexico

Attalea butyracea próximas a las viviendas como posible fuente de infestación domiciliaria por Rhodnius prolixus (Hemiptera: Reduviidae) en los Llanos Orientales de Colombia

Ecoepidemiology and biology of Eratyrus mucronatus Stål, 1859 (Hemiptera: Reduviidae: Triatominae), a sylvatic vector of Chagas disease in the Brazilian Amazon

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