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Phylogenetics relationships within the Triatoma sherlocki Papa, Jurberg, Carcavallo, Cerqueira & Barata, 2002 and T. brasiliensis Neiva, 1911 (Hemiptera, Reduviidae) using on sequencing of the nuclear and mitochondrial genes

Grant number: 06/02778-5
Support type:Regular Research Grants
Duration: March 01, 2007 - February 28, 2009
Field of knowledge:Biological Sciences - Parasitology
Principal Investigator:João Aristeu da Rosa
Grantee:João Aristeu da Rosa
Home Institution: Faculdade de Ciências Farmacêuticas (FCFAR). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil


Wild triatomine specimens collected at Santo Inacio – BA, 1975, were classified as Triatoma brasiliensis subspecie based on morphological and genetic studies. However new analysis conducted at “Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos Fundação Oswaldo Cruz (FIOCRUZ)” in 2002 classified them as new species Triatoma sherlocki sp. n. Papa, Jurberg, Carcavallo, Cerqueira & Barata, 2002. Our aim is to further understand this philogenetic relationship using mitochondrial and nuclear gene sequences. We have been examining some regions of the cytochrome b (mtCytb) and the large subunit ribosomal RNA (mtlsurRNA) mitochondrial genes, and the D2 variable region of the 28S RNA (D2) nuclear gene. These gene regions are involved in basic metabolic functions and thereby not considered unjustly subject to external selection pressures. Thus sequence comparisons of these regions will bring new elements very useful in addressing the taxonomic problems cited above. (AU)

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)
MENDONCA, VAGNER J.; DA SILVA, MARCO T. A.; DE ARAUJO, RENATO F.; MARTINS JUNIOR, JOAQUIM; BACCI JUNIOR, MAURICIO; ALMEIDA, CARLOS EDUARDO; COSTA, JANE; GRAMINHA, MARCIA A. S.; CICARELLI, REGINA M. B.; DA ROSA, JOAO A. Phylogeny of Triatoma sherlocki (Hemiptera: Reduviidae: Triatominae) Inferred from Two Mitochondrial Genes Suggests Its Location Within the Triatoma brasiliensis Complex. American Journal of Tropical Medicine and Hygiene, v. 81, n. 5, p. 858-864, NOV 2009. Web of Science Citations: 29.

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