Triatoma vitticeps (Stal, 1859) (Hemiptera, Triatominae): A Chagas Disease Vector or a Complex of Vectors?

Kaio Cesar Chaboli Alevi Laboratório de Biologia Celular, Departamento de Biologia, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista “Júlio de Mesquita Filho”, São José do Rio Preto, São Paulo, Brazil;

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Ariane Cristina Caris Garcia Laboratório de Biologia Celular, Departamento de Biologia, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista “Júlio de Mesquita Filho”, São José do Rio Preto, São Paulo, Brazil;

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Ana Letícia Guerra Laboratório de Biologia Celular, Departamento de Biologia, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista “Júlio de Mesquita Filho”, São José do Rio Preto, São Paulo, Brazil;

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Felipe Ferraz Figueiredo Moreira Laboratório de Biodiversidade Entomológica, Instituto Oswaldo Cruz, Manguinhos, Rio de Janeiro, Brazil;

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Jader de Oliveira Laboratório de Parasitologia, Departamento de Ciências Biológicas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Araraquara, São Paulo, Brazil

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João Aristeu da Rosa Laboratório de Parasitologia, Departamento de Ciências Biológicas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Araraquara, São Paulo, Brazil

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Maria Tercília Vilela de Azeredo Oliveira Laboratório de Biologia Celular, Departamento de Biologia, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista “Júlio de Mesquita Filho”, São José do Rio Preto, São Paulo, Brazil;

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Triatoma vitticeps is a Chagas disease vector that was found infected with Trypanosoma cruzi in homes. As this species is endemic from Brazil (Bahia, Espírito Santo, Minas Gerais, and Rio de Janeiro) and no study comparing the specimens from different Brazilian states was conducted, we analyzed the genetic distance (16S rDNA, Cyt b, and COI mitochondrial genes) and the chromosomal characteristics for T. vitticeps from Minas Gerais, Rio de Janeiro, and Espírito Santo. All specimens showed the same cytogenetic characteristics. On the other hand, the different mitochondrial genes demonstrated high intraspecific variation between the genetic distances of T. vitticeps from different states ranging from 2.3% to 7.2%. Based on this, our results suggest that possibly what is characterized as T. vitticeps is a complex of cryptic species (or subspecies).

Author Notes

Address correspondence to Kaio Cesar Chaboli Alevi, Instituto de Biociências, Letras e Ciências Exatas, IBILCE/UNESP, Rua Cristóvão Colombo, 2265, Jardim Nazareth, CEP 15054-000, São José do Rio Preto, São Paulo, Brazil. E-mail: kaiochaboli@hotmail.com

Financial support: This work was supported by the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) (Process number 2013/19764-0) and the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq).

Authors’ addresses: Kaio Cesar Chaboli Alevi, Ariane Cristina Caris Garcia, Ana Letícia Guerra, and Maria Tercília Vilela de Azeredo Oliveira, Departamento de Biologia, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista “Júlio de Mesquita Filho”, São José do Rio Preto, São Paulo, Brazil, E-mails: kaiochaboli@hotmail.com, ariane.garcia@outlook.com, analebio@yahoo.com.br, and tercilia@ibilce.unesp.br. Felipe Ferraz Figueiredo Moreira, Laboratório de Biodiversidade Entomológica, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil, E-mail: felipento@hotmail.com. Jader de Oliveira and João Aristeu da Rosa, Departamento de Ciências Biológicas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Araraquara, São Paulo, Brazil, E-mails: jdr.oliveira@hotmail.com and joaoaristeu@gmail.com.

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