Revisiting the hybridization processes in the triatoma brasiliensis complex (Hemiptera, triatominae): Reproductive isolation between triatoma petrocchiae and T. b. brasiliensis and T. lenti

Triatoma petrocchiae is a species morphologically similar to T. b. brasiliensis (which resulted in a synonymization event); despite this similarity, genetic, morphological, and experimental crossbreed-ing studies confirmed the specific status of T. petrocchiae. Considering that both species have bee...

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Detalles Bibliográficos
Autores: Delgado, Luiza Maria Grzyb [UNESP], de Oliveira, Jader [UNESP], Ravazi, Amanda [UNESP], Madeira, Fernanda Fernandez [UNESP], Dos Reis, Yago Visinho [UNESP], Pinotti, Heloisa [UNESP], de Oliveira, Ana Beatriz Bortolozo [UNESP], Masarin, Isabella da Silva [UNESP], Lilioso, Maurício, Folly-Ramos, Elaine, Galvão, Cleber, de Azeredo-Oliveira, Maria Tercília Vilela [UNESP], da Rosa, João Aristeu [UNESP], Alevi, Kaio Cesar Chaboli [UNESP]
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:Brasil
Institución:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/229936
Acceso en línea:http://dx.doi.org/10.3390/insects12111015
http://hdl.handle.net/11449/229936
Access Level:acceso abierto
Palabra clave:Chagas disease vectors
Hybridization
Reproductive barriers
Speciation
Triatomines
Descripción
Sumario:Triatoma petrocchiae is a species morphologically similar to T. b. brasiliensis (which resulted in a synonymization event); despite this similarity, genetic, morphological, and experimental crossbreed-ing studies confirmed the specific status of T. petrocchiae. Considering that both species have been reported living in sympatry and that, for a long time, most species of the T. brasiliensis complex were considered only chromatic variants of T. b. brasiliensis, we carried out experimental crosses between T. b. brasiliensis and T. petrocchiae (to confirm whether these species are reproductively isolated) and between T. lenti and T. petrocchiae (to assess whether T. petrocchiae also presents prezygotic isolation with the other species of the T. brasiliensis complex). Reciprocal experimental crosses were conducted, and weekly, the eggs were collected, counted, and separated in new containers to assess the hatch rate. Neither cross resulted in hybrids, demonstrating that there are pre-zygotic reproductive barriers installed between T. petrocchiae and the other species of the T. brasiliensis complex. On the basis of the results above, we demonstrated that T. petrocchiae is reproductively isolated from T. b. brasilien-sis and T. lenti. Furthermore, we suggest that T. petrocchiae is the species most derived from the T. brasiliensis complex.

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