Article
Revisiting the Hybridization Processes in the Triatoma brasiliensis Complex (Hemiptera, Triatominae): Reproductive Isolation between Triatoma petrocchiae and T. b. brasiliensis and T. lenti
Registro en:
DELGADO, Luiza Maria Grzyb et al. Revisiting the Hybridization Processes in the Triatoma brasiliensis Complex (Hemiptera, Triatominae): Reproductive Isolation between Triatoma petrocchiae and T. b. brasiliensis and T. lenti. Insects, v. 12, 1015, p, 1 -8, Nov. 2021.
2075-4450
10.3390/insects12111015
Autor
Delgado, Luiza Maria Grzyb
Oliveira, Jader
Ravazi, Amanda
Madeira, Fernanda Fernandez
Reis, Yago Visinho dos
Pinotti, Heloisa
Oliveira, Ana Beatriz Bortolozo de
Masarin, Isabella da Silva
Lilioso, Maurício
Ramos, Elaine Folly
Galvão, Cleber
Oliveira, Maria Tercília Vilela de Azeredo
Rosa, João Aristeu
Alevi, Kaio Cesar Chaboli
Resumen
Triatoma petrocchiae is a species morphologically similar to T. b. brasiliensis (which resulted in
a synonymization event); despite this similarity, genetic, morphological, and experimental crossbreeding
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. brasiliensis
and T. lenti. Furthermore, we suggest that T. petrocchiae is the species most derived from the
T. brasiliensis complex.