<i>Trypanosoma cruzi</i> vectors in a periurban area of the Western Brazilian Amazon

Moraes, Madson Huilber da Silva; Jesus, Adila Costa de; Madeira, Fernanda Portela; Moresco, Gilberto Gilmar; Oliveira, Jader de; Rosa, João Aristeu da; Camargo, Luís Marcelo Aranha; Bernarde, Paulo Sérgio; Meneguetti, Dionatas Ulises de Oliveira

doi:10.1590/S1678-9946202062087

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Brief Communication • Rev. Inst. Med. trop. S. Paulo 62 • 2020 • https://doi.org/10.1590/S1678-9946202062087 copy

Trypanosoma cruzi vectors in a periurban area of the Western Brazilian Amazon

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The etiological agent of American trypanosomiasis is the protozoan Trypanosoma cruzi , typically transmitted by triatomines. The aim of this study was to investigate the triatomine fauna and trypanosomiasis infections in Acre State , Western Brazilian Amazon. Insect collection was performed by dissecting palm trees and installing traps. We found that T. cruzi infection rate was 24.5% and Rhodnius pictipes (57.1%) was the most abundant triatomine species. Health education as well as epidemiological and entomological surveillance are necessary to diagnose and prevent new cases of Chagas disease in the region.

KEYWORDS:
Triatominae; Trypanosomiasis; Trypanosoma cruzi; Western Amazon; Rhodnius pictipes

Species	N/ Phase	Infected	Infection rate
R. montenegrensis	0/ Ni1	0	0%
	0/Ni2	0	0%
	1/Ni3	0	0%
	1/Ni4	0	0%
	1/Ni5	0	0%
	4/A	2	50%
	7 (Total)	2	28.6%
R. pictipes	0/Ni1	0	0%
	0/Ni2	0	0%
	1/Ni3	1	100%
	3/Ni4	2	66.7%
	1/Ni5	0	0%
	2/A	1	50%
	7 (Total)	4	57.1%
Rhodnius sp1 ^* * Triatomines that did not reach the adult stage for the identification at the species level. (pattern R. montenegrensis / R. robustus )	0/Ni1	0	0%
	7/Ni2	1	14.3%
	10/Ni3	0	0%
	9/Ni4	3	33.3%
	6/Ni5	2	33.3%
	0/A	0	0%
	32 (Total)	6	18.7%
Rhodnius sp2 ^* * Triatomines that did not reach the adult stage for the identification at the species level. (pattern R. pictipes / R. stali )	3/Ni1	0	0%
	2/Ni2	0	0%
	0/Ni3	0	0%
	0/Ni4	0	0%
	0/Ni5	0	0%
	0/A	0	0%
	5 (Total)	0	0%
E. mucronatus	0/Ni1	0	0%
	0/Ni2	0	0%
	1/Ni3	0	0%
	0/Ni4	0	0%
	1/Ni5	1	100%
	0/A	0	0
	2 (Total)	1	50%
Total	53	13	24.5

DRP ^* * DRP = Distance between residence and palm tree (m); (meters)	TTC ^ TTC = Total triatomines collected;	TDP ^* ***** TDP = Total dissected palms;	MTP ^** ****** MTP = Average triatomines by palm tree.
50-200	35	3	11.7
200-400	9	2	4.5
400-600	9	3	3.0

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E-mail: revimtsp@usp.br

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[1] Correspondence to: Dionatas Ulises de Oliveira Meneguetti, Universidade Federal do Acre, Colégio de Aplicação, Rodovia BR 364, Km 04, Distrito Industrial, CEP 69920-900 , Rio Branco, AC, Brazil. Tel: +55 68 99217-9229 . E-mail:dionatas@icbusp.org