First report of Panstrongylus megistus (Hemiptera, Reduviidae, Triatominae) in the State of Acre and Rondônia, Amazon, Brazil

Ribeiro, Mariane Albuquerque Lima; Castro, Gabriela Vieira de Souza; Souza, Janis Lunier de; Souza, Cláudio Rodrigues de; Ramos, Lucas Feksa; Oliveira, Jader de; Rosa, João Aristeu da; Camargo, Luís Marcelo Aranha; Meneguetti, Dionatas Ulises de Oliveira

doi:10.1016/j.actatropica.2018.02.032

Cited by 20 publications

(13 citation statements)

References 14 publications

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“…Here we report the first record of this species in the state of Amazonas, within the Amazon region, Brazil, where in recent years there have been several new reports of other triatomine species (Ferreira and Souto 2013, Obara et al 2013, Meneguetti et al 2011, 2015, Terrasini et al 2017, Rosa et al 2017, Castro et al 2018. The occurrence of sylvatic species invading human dwellings is a major difficulty for vector surveillance programs and a challenge for understanding the magnitude of the risk of Trypanosoma cruzi transmission.…”

Section: Introductionmentioning

confidence: 75%

Microtriatoma trinidadensis (Lent, 1951) (Hemiptera, Reduviidae, Triatominae): first record in the state of Amazonas, Brazil

Souza¹,

Monte²,

Paiva³

et al. 2019

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Microtriatoma trinidadensis (Lent, 1951), previously known from Venezuela, Colombia, Suriname, Peru, Bolivia, and the Brazilian states of Mato Grosso, Pará, and Tocantins, is reported for the first time in Amazonas state, Brazil. We found in the collection of the Instituto Nacional de Pesquisas da Amazônia an unidentified female specimen of Microtriatoma. The specimen was collected in April 2010, in dried straw and foliage of açai palm, Euterpe precatoria Mart., from Monte Sião, municipality of Codajás, Amazonas state.

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Section: Introductionmentioning

confidence: 75%

Microtriatoma trinidadensis (Lent, 1951) (Hemiptera, Reduviidae, Triatominae): first record in the state of Amazonas, Brazil

Souza¹,

Monte²,

Paiva³

et al. 2019

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“…Although vector-borne transmissions by wild triatomine can possibly occur, either through direct contact with forest areas or by intrusion of these insects in an individual's home, it is possible that the data reported as vector-borne transmission have not been adequately investigated to prove this form of transmission 22 .…”

Section: Discussionmentioning

confidence: 99%

Chagas Disease in the Western Brazilian Amazon: Epidemiological Overview from 2007 to 2018

Madeira

Jesus

Moraes

et al. 2021

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Introduction: Chagas disease (CD) is a disease caused by the protozoan flagellates of the Kinetoplastid order Trypanosoma cruzi. Approximately 8,000,000 people are infected worldwide, mainly in Latin America, causing disabilities and more than 10,000 deaths per year. Objective: This study aimed to describe the epidemiological panorama of CD in the Western Brazilian Amazon from 2007 to 2018. Methods: In this ecological study, secondary data regarding the confirmed cases of T. cruzi infection in the states of Acre, Amazonas, Rondônia, and Roraima were collected from the Single Health System Notification Information System of the Department of Informatics of the Single Health System and were analyzed. The data were used to characterize the epidemiological profile of T. cruzi infection and to determine the frequency of infection in Western Amazonia. Results: A total of 184 cases of CD were reported in Western Amazonia, and the highest number of cases was reported in the states of Amazonas and Acre. Conclusion: The epidemiological panorama of the Western Brazilian Amazon from 2007 to 2018 includes a greater number of cases of T. cruzi infection in men aged 20–39 years and those living in rural areas. Oral transmission was prevalent in the region during the study, and the highest number of cases was reported in the months of April and December. Epidemiological data are an important resource for understanding the dynamics of CD and the main aspects related to the health-disease process.

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“…Among the autochthonous triatomines of Brazil, Panstrongylus megistus (Burmeister, 1835) is considered the vector of greatest epidemiological importance of Chagas disease due to its high capacity to invade and colonize domestic buildings, high levels of infection with T. cruzi , eclectic blood-feeding and a wide geographical distribution in Brazil, ranging from the state of Maranhão to the state of Rio Grande do Sul [ 4 – 7 ]. In recent years, the presence of P. megistus has also been reported in the Brazialn states of Acre and Rondônia [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Identification and characterization of microsatellite markers for population genetic studies of Panstrongylus megistus (Burmeister, 1835) (Triatominae: Reduviidae)

et al. 2021

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Background Panstrongylus megistus is the most important vector of Chagas disease in Brazil. Studies show that the principal factor hindering the control of triatomines is reinfestation of houses previously treated with insecticides. Studies at the microgeographic level are therefore necessary to better understand these events. However, an efficient molecular marker is not yet available for carrying out such analyses in this species. The aim of the present study was to identify and characterize microsatellite loci for future population genetic studies of P. megistus. Methods This study work consisted of five stages: (i) sequencing of genomic DNA; (ii) assembly and selection of contigs containing microsatellites; (iii) validation of amplification and evaluation of polymorphic loci; (iv) standardization of the polymorphic loci; and (v) verification of cross-amplification with other triatomine species. Results Sequencing of males and females generated 7,908,463 contigs with a total length of 2,043,422,613 bp. A total of 2,043,690 regions with microsatellites in 1,441,091 contigs were obtained, with mononucleotide repeats being the most abundant class. From a panel of 96 loci it was possible to visualize polymorphisms in 64.55% of the loci. Of the 20 loci genotyped, the number of alleles varied from two to nine with an average of 4.9. Cross-amplification with other species of triatomines was observed in 13 of the loci. Conclusions Due to the high number of alleles encountered, polymorphism and the capacity to amplify from geographically distant populations, the microsatellites described here show promise for utilization in population genetic studies of P. megistus. Graphic abstract

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First report of Panstrongylus megistus (Hemiptera, Reduviidae, Triatominae) in the State of Acre and Rondônia, Amazon, Brazil

Abstract: The occurrence of P. megistus in the Western Amazon evidences an epidemiological alert, since it is an important vector of T. cruzi.

Cited by 20 publications

References 14 publications

Microtriatoma trinidadensis (Lent, 1951) (Hemiptera, Reduviidae, Triatominae): first record in the state of Amazonas, Brazil

Microtriatoma trinidadensis (Lent, 1951) (Hemiptera, Reduviidae, Triatominae): first record in the state of Amazonas, Brazil

Chagas Disease in the Western Brazilian Amazon: Epidemiological Overview from 2007 to 2018

Identification and characterization of microsatellite markers for population genetic studies of Panstrongylus megistus (Burmeister, 1835) (Triatominae: Reduviidae)

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