Wild mammals involved in the transmission of Trypanosoma cruzi and food sources of Triatoma sherlocki in an endemic region of northeastern Brazil

Author:

Santos Flavia12ORCID,Magalhaes‐Junior Jairo Torres2ORCID,de Oliveira Carneiro Ianei34ORCID,Lambert Sabrina Mota5ORCID,da Silva Souza Bárbara Maria Paraná5ORCID,de Pauda Alini Dias2ORCID,de Freitas Marcondes Pessoa2ORCID,Franke Carlos Roberto1ORCID

Affiliation:

1. Programa de Pós‐graduação em Ciência Animal nos Trópicos, Escola de Medicina Veterinária e Zootecnia Universidade Federal da Bahia–UFBA Salvador Bahia Brazil

2. Centro Multidisciplinar do Campus de Barra (CMB) da Universidade Federal do Oeste da Bahia‐UFOB Barra Bahia Brazil

3. Campus Professor Barros Universidade Salvador Salvador Bahia Brazil

4. Programa de Pós‐graduação em Saúde Coletiva, Instituto de Saúde Coletiva (ISC) Universidade Federal da Bahia ‐ UFBA Salvador Bahia Brazil

5. Laboratório de Biologia Celular e Molecular (LBCM) do Hospital de Medicina Veterinária Prof. Renato Rodemburg de Medeiros Neto (HOSPMEV) Universidade Federal da Bahia – UFBA Salvador Bahia Brazil

Abstract

AbstractThe present study, carried out in the municipality of Gentio do Ouro, Bahia, Brazil aimed to evaluate which wild mammals may be involved in the transmission of T. cruzi and which are the blood sources for triatomines collected in the study area. PCR analysis of 31 wild mammals captured revealed T. cruzi infection in 6.4% (2/31): one specimen of the opossum Didelphis albiventris (1/3) and one of the rodent Kerodon rupestris (1/5); despite being more frequent in the area, no specimen of the rodent Thrichomys sp. (0/23) was infected. A total of 169 triatomines were captured. The conclusive detection of food sources was possible only for Triatoma sherlocki Papa et al., 2002 (n = 56), with evidence for: K. rupestris (35.7%), Gallus (17.9%), D. albiventris (14.3%), Homo sapiens (14.3%), Tropidurus hispidus (7.1%), Leopardus geoffroyi (5.3%), Conepatus semistriatus (1.8%), Thrichomys inermis (1.8%) and Rattus norvegicus (1.8%). Triatomines of the species T. sherlocki showed food eclecticism, including feeding on humans, with some of them being captured at dwellings. These facts make this triatomine a potential link for the transmission of T. cruzi between wild and anthropic environments, highlighting a latent risk of the reemergence of Chagas disease outbreaks.

Publisher

Wiley

Subject

Insect Science,General Veterinary,Ecology, Evolution, Behavior and Systematics,Parasitology

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