Prezygotic isolation confirms the exclusion of Triatoma melanocephala, T. vitticeps and T. tibiamaculata of the T. brasiliensis subcomplex (Hemiptera, Triatominae)

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...

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Detalles Bibliográficos
Autores: Santos Neves, Joao Marcos dos [UNESP], Sousa, Paulo Sergio de [UNESP], Oliveira, Jader de [UNESP], Ravazi, Amanda [UNESP], Madeira, Fernanda Fernandez [UNESP], Reis, Yago Visinho dos [UNESP], Bortolozo de Oliveira, Ana Beatriz [UNESP], Pinotti, Heloisa [UNESP], Vilela de Azeredo-Oliveira, Maria Tercilia [UNESP], Rosa, Joao Aristeu da [UNESP], Chaboli Alevi, Kaio Cesar [UNESP]
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:Brasil
Institución:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/196549
Acceso en línea:http://dx.doi.org/10.1016/j.meegid.2019.104149
http://hdl.handle.net/11449/196549
Access Level:acceso abierto
Palabra clave:Chagas disease vectors
Systematics
Reproductive isolation
Descripción
Sumario: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.

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