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Cytotaxonomy of triatomines: The cytogenic as a tool in the study of Triatoma brasiliensis complex and of Brasiliensis subcomplex

Grant number: 12/22361-2
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): January 01, 2013
Effective date (End): February 28, 2014
Field of knowledge:Biological Sciences - Parasitology - Entomology and Malacology of Parasites and Vectors
Principal Investigator:Maria Tercília Vilela de Azeredo Oliveira
Grantee:Kaio Cesar Chaboli Alevi
Host Institution: Instituto de Biociências, Letras e Ciências Exatas (IBILCE). Universidade Estadual Paulista (UNESP). Campus de São José do Rio Preto. São José do Rio Preto , SP, Brazil


The triatomines belong to the Hemiptera Order, Heteroptera Suborder, Reduviidae Family and Triatominae Subfamily. Specific identification and systematic triatomines have been based primarily on morphological observations, mainly by light microscopy. Schofield and Galvão, in 2009, proposed a classification of these organisms in specific subcomplexes and to group them, using mainly the geographical and morphological characters as parameters. The Brasiliensis subcomplex consists of nine species: Triatoma brasiliensis, T. juazeirensis, T. melanica, T melanocephala, T. petrochiae, T. lenti, T. sherlocki, T. tibiamaculata and T. vitticeps. Costa and colleagues, through the analysis of different aspects, such as morphological, biological, isozyme and ecological, ranked the subspecies T. b. brasiliensis and T. b. macromelanosoma and species, T. juazeirensis and T. melanica the T. brasiliensis complex. In 2009, through mitochondrial DNA phylogenetic reconstruction was proposed to recent inclusion T. sherlocki the complex. Thus, this paper describes cytogenetically the species T. lenti, T. sherlocki, experimental hybrids (F1) and (F2) produced from a cross between T. and T. lenti sherlocki, T. melanocephala and T. vitticeps, with the aim of evaluating cytotaxonomic the current classification of these organisms morphologically related. Moreover, we will compare the cytogenetic characteristics of these organisms with triatomines belonging to T. brasiliensis complex and Brasiliensis subcomplex, to provide an additional tool in the classification problem involved in these organisms.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ALEVI, K. C. C.; ROSA, J. A.; AZEREDO-OLIVEIRA, M. T. V.. Distribution of constitutive heterochromatin in Triatoma melanocephala (Hemiptera, Triatominae). Genetics and Molecular Research, v. 13, n. 3, p. 7899-7903, . (12/22361-2)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
ALEVI, Kaio Cesar Chaboli. Citotaxonomia dos triatomíneos: a citogenética como ferramenta no estudo do complexo Triatoma brasiliensis e do subcomplexo Brasiliensis. 2014. Master's Dissertation - Universidade Estadual Paulista (Unesp). Instituto de Biociências Letras e Ciências Exatas. São José do Rio Preto São José do Rio Preto.

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