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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Chagas disease is caused by the Trypanosoma cruzi and transmitted mainly by triatomines. Triatoma is a paraphyletic group and the species of this genus are grouped into complexes and subcomplexes. Morphological data and geographical distribution grouped initially T. melanocephala, T. vitticeps and T. tibiamaculata in the T. brasiliensis subcomplex. However, karyotypic and phylogenetic analysis suggested the exclusion of T. melanocephala, T. vitticeps and T. tibiamaculata from this subcomplex. Considering that studies of experimental crosses can help to understand the systematics of species, we performed experimental crosses between T. melanocephala, T. vitticeps and T. tibiamaculata with T. b. brasiliensis. No crosses resulted in hybrids. Taking into account that the species of the T. brasiliensis subcomplex do not present interspecific prezygotic barriers, the characterization of reproductive barriers shows that T. melanocephala, T. vitticeps and T. tibiamaculata do not present an evolutionary proximity relationship with the species of this subcomplex. Thus, we confirmed the exclusion of these species from the T. brasiliensis subcomplex and we emphasize the importance of experimental crosses for evolutionary studies.
Univ Estadual Paulista, FCFAR UNESP, Fac Ciencias Farmaceut, Dept Ciencias Biol,Lab Parasitol, Rodovia Araraquara Jau Km 1, BR-14801902 Araraquara, SP, Brazil
Univ Estadual Paulista, IBB UNESP, Inst Biociencias, Rua Dr Antonio Celso Wagner Zanin 250, BR-18618689 Botucatu, SP, Brazil
Univ Estadual Paulista, IBILCE UNESP, Inst Biociencias Letras & Ciencias Exatas, Dept Biol,Lab Biol Celular, Rua Cristovao Colombo 2265, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil
Univ Estadual Paulista, FCFAR UNESP, Fac Ciencias Farmaceut, Dept Ciencias Biol,Lab Parasitol, Rodovia Araraquara Jau Km 1, BR-14801902 Araraquara, SP, Brazil
Univ Estadual Paulista, IBB UNESP, Inst Biociencias, Rua Dr Antonio Celso Wagner Zanin 250, BR-18618689 Botucatu, SP, Brazil
Univ Estadual Paulista, IBILCE UNESP, Inst Biociencias Letras & Ciencias Exatas, Dept Biol,Lab Biol Celular, Rua Cristovao Colombo 2265, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil
FAPESP: 2019/01197-9
CAPES: 001
