Revisiting the Hybridization Processes in the <i>Triatoma brasiliensis</i> Complex (Hemiptera, Triatominae): Reproductive Isolation between <i>Triatoma petrocchiae</i> and <i>T. b. brasiliensis</i> and <i>T. lenti</i>

Revisiting the Hybridization Processes in the <i>Triatoma brasiliensis</i> Complex (Hemiptera, Triatominae): Reproductive Isolation between <i>Triatoma petrocchiae</i> and <i>T. b. brasiliensis</i> and <i>T. lenti</i>

<i>Triatoma petrocchiae</i> is a species morphologically similar to <i>T. b. brasiliensis</i> (which resulted in a synonymization event); despite this similarity, genetic, morphological, and experimental crossbreeding studies confirmed the specific status of <i>T. petro...

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Detalles Bibliográficos
Autores principales: Luiza Maria Grzyb Delgado, Jader de Oliveira, Amanda Ravazi, Fernanda Fernandez Madeira, Yago Visinho dos Reis, Heloisa Pinotti, Ana Beatriz Bortolozo de Oliveira, Isabella da Silva Masarin, Maurício Lilioso, Elaine Folly-Ramos, Cleber Galvão, Maria Tercília Vilela de Azeredo-Oliveira, João Aristeu da Rosa, Kaio Cesar Chaboli Alevi
Formato: article
Lenguaje:EN
Publicado: MDPI AG 2021
Materias:
triatomines
reproductive barriers
hybridization
speciation
Chagas disease vectors
Science
Q
Acceso en línea:https://doaj.org/article/9fdc4e599c354c0f9935a8589795dd70
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Sumario:<i>Triatoma petrocchiae</i> is a species morphologically similar to <i>T. b. brasiliensis</i> (which resulted in a synonymization event); despite this similarity, genetic, morphological, and experimental crossbreeding studies confirmed the specific status of <i>T. petrocchiae</i>. Considering that both species have been reported living in sympatry and that, for a long time, most species of the <i>T. brasiliensis</i> complex were considered only chromatic variants of <i>T. b. brasiliensis</i>, we carried out experimental crosses between <i>T. b. brasiliensis</i> and <i>T. petrocchiae</i> (to confirm whether these species are reproductively isolated) and between <i>T. lenti</i> and <i>T. petrocchiae</i> (to assess whether <i>T. petrocchiae</i> also presents prezygotic isolation with the other species of the <i>T. brasiliensis</i> 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 <i>T. petrocchiae</i> and the other species of the <i>T. brasiliensis</i> complex. On the basis of the results above, we demonstrated that <i>T. petrocchiae</i> is reproductively isolated from <i>T. b. brasiliensis</i> and <i>T. lenti</i>. Furthermore, we suggest that <i>T. petrocchiae</i> is the species most derived from the <i>T. brasiliensis</i> complex.

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