Autor(es): Alevi, Kaio Cesar Chaboli [UNESP] ; Mendonça, Priscila Pasqüetto [UNESP] ; Pereira, Nathália Paiva [UNESP] ; da Rosa, João Aristeu [UNESP] ; de Azeredo-Oliveira, Maria Tercília Vilela [UNESP]
Data: 2022
Identificador Persistente: http://hdl.handle.net/11449/227346
Origem: Oasisbr
Assunto(s): Brasiliensis subcomplex; Cytogenetics; Taxonomy; Triatominae
Made available in DSpace on 2022-04-29T07:12:48Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-12-09
Triatoma melanocephala and T. lenti are important vectors of Chagas disease. These cryptic species of triatomines are grouped in the subcomplex brasiliensis due only to morphological characters and geographical distribution. Cytogenetic studies are important to the classifcation of insects and can assist in creating a disease prevention plan. The aim of the present study was to determine nucleolar activity and nucleolus organizer regions (NORs) in these insects using the cytogenetic method of silver ion impregnation. T. melanocephala exhibited three active NORs in autosomes during prophase I. T. lenti exhibited two active NORs in autosomes during prophase I and metaphase I. Both species exhibit the persistent nucleolar material found in triatomines. The analysis of NORs in the present study revealed that T. lenti exhibited labeling similar to that found in T. tibiamaculata, which belongs to the subcomplex, whereas T. melanocephala shows no direct relationship with the subcomplex.
Departamento de Biologia Universidade Estadual Paulista 'Júlio de Mesquita Filho' UNESP/IBILCE, São José do Rio Preto, SP
Universidade Estadual Paulista 'Júlio de Mesquita Filho' UNESP/FCFar, Araraquara, SP
Departamento de Biologia Universidade Estadual Paulista 'Júlio de Mesquita Filho' UNESP/IBILCE, São José do Rio Preto, SP
Universidade Estadual Paulista 'Júlio de Mesquita Filho' UNESP/FCFar, Araraquara, SP
