Domestic, Peridomestic and Wild Hosts in the Transmission of Trypanosoma Cruzi in the Caatinga Area Colonised by Triatoma Brasiliensis

Overview

Journal Mem Inst Oswaldo Cruz

Specialties Parasitology
Tropical Medicine

Date 2014 Nov 21

PMID 25410992

Citations 31

Authors

Claudia Mendonca Bezerra

Luciano Pamplona de Goes Cavalcanti

Rita de Cassia Moreira de Souza

Silvia Ermelinda Barbosa

Samanta Cristina das Chagas Xavier

Ana Maria Jansen

Relrison Dias Ramalho

Lileia Diotaiut

Affiliations

Soon will be listed here.

Abstract

The role played by different mammal species in the maintenance of Trypanosoma cruzi is not constant and varies in time and place. This study aimed to characterise the importance of domestic, wild and peridomestic hosts in the transmission of T. cruzi in Tauá, state of Ceará, Caatinga area, Brazil, with an emphasis on those environments colonised by Triatoma brasiliensis. Direct parasitological examinations were performed on insects and mammals, serologic tests were performed on household and outdoor mammals and multiplex polymerase chain reaction was used on wild mammals. Cytochrome b was used as a food source for wild insects. The serum prevalence in dogs was 38% (20/53), while in pigs it was 6% (2/34). The percentages of the most abundantly infected wild animals were as follows: Thrichomys laurentius 74% (83/112) and Kerodon rupestris 10% (11/112). Of the 749 triatomines collected in the household research, 49.3% (369/749) were positive for T. brasiliensis, while 6.8% were infected with T. cruzi (25/369). In captured animals, T. brasiliensis shares a natural environment with T. laurentius, K. rupestris, Didelphis albiventris, Monodelphis domestica, Galea spixii, Wiedomys pyrrhorhinos, Conepatus semistriatus and Mus musculus. In animals identified via their food source, T. brasiliensis shares a natural environment with G. spixii, K. rupestris, Capra hircus, Gallus gallus, Tropidurus oreadicus and Tupinambis merianae. The high prevalence of T. cruzi in household and peridomiciliar animals reinforces the narrow relationship between the enzootic cycle and humans in environments with T. brasiliensis and characterises it as ubiquitous.

Citing Articles

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Experimental Hybrids of the Species Complex Show Higher Susceptibility to the Infection Than Their Parentals.

Correia N, Paschoaletto L, Reigada C, Goncalves T, Moreira C, Costa J Microorganisms. 2023; 11(12).

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