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Molecular phylogeny of Rhipicephalus sanguineus (Latreille, 1806) Brazilian strain and Rhipicephalus turanicus Pomerantsev, 1936 (Acari: Ixodidae) Spanish strain

Grant number: 11/22059-1
Support type:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): August 01, 2012
Effective date (End): October 31, 2012
Field of knowledge:Biological Sciences - Parasitology
Principal researcher:Maria Izabel Souza Camargo
Grantee:Gustavo Seron Sanches
Supervisor abroad: Atilio Jose Mangold
Home Institution: Instituto de Biociências (IB). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil
Research place: Instituto Nacional de Tecnología Agropecuaria (INTA), Argentina  
Associated to the scholarship:10/00415-8 - Biological and morphological (external and reproductive system of males) comparison of Rhipicephalus sanguineus (Latreille, 1806) from Brazil and Rhipicephalus turanicus Pomerantsev, 1936 (Acari: Ixodidae) from Spain, BP.DR

Abstract

The genus Rhipicephalus Koch, 1844, comprises about 79 species of ticks recognized, morphologically similar and with taxonomic status for some species still uncertain. Of these, only the dog tick, R. sanguineus "strictu sensu", is recognized in the Neotropical region, but it is known that there may be genetic differences, morphological and biological considerably between different local populations of this region.Seeking to better understand the biosystematic status of this group , Brazilian researchers, in collaboration with the Argentine group INTA - National Institute of Agricultural Technology, found significant differences in morphology and biology of populations of R. sanguineus from Brazil and Argentina (SZABÓ et al., 2005, Oliveira et al., 2005). Moreover, the comparison of mitochondrial 12S rDNA of these two populations showed close phylogenetic relationship between R. sanguineus from Europe (France) with the Argentine strain and Brazilian strain with R. turanicus from South Africa.Continuing this work, the project aims to study, using molecular techniques, the phylogenetic relationships between R. sanguineus from Brazil, R. sanguineus from Argentina and R. turanicus from Spain to the mitochondrial genes 12S rDNA, 16S, 18S and ITS2. The results, analyzed together with data already published, may facilitate the understanding of the Biosystematic status of this genus. (AU)

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