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Molecular dissimilarities of Rhipicephalus sanguineus (Acari: Ixodidae) in Brazil and its relation with samples throughout the world: is there a geographical pattern?

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Abstract

In this study the genetic variability of Rhipicephalus sanguineus within Brazil and its relation with ticks of the same group from different continents was evaluated. Mitochondrial 12S and 16S rDNA fragments of R. sanguineus from seven Brazilian States were sequenced and compared to GenBank sequences of R. sanguineus and R. turanicus ticks from Africa, Asia, Europe, South America and USA. Results indicate a relatively high intra-specific variability between Brazilian samples but also a global latitude linked distribution pattern of at least two major R. sanguineus groups; one group distributed from latitude 25°N to 22°S including R. sanguineus from Brazil, Taiwan and Thailand and R. turanicus from Zambia and Zimbabwe, and the other group found closer to the poles, roughly above 29°N and below 30°S with ticks from Argentina, Uruguay, France, Oklahoma (USA), Israel and Egypt.

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Acknowledgments

We would like to acknowledge Curso de Pós-Graduação em Ciências Veterinárias (CPGCV)/Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) and Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) for financial support, and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for scholarship (Leonardo Burlini). We are indebted to the researchers Alessandra Scofield Amaral, Carina Elisei, Fábio Barbieri, Isabela Martins, Lígia Borges, Renata Madureira and Silvia Maria Mendes Ahid for Rhipicephalus sanguineus samples. Part of this work has been facilitated through the International Consortium on Ticks and Tick-borne Diseases (ICTTD-3) Coordination Action financed by the INCO program of the European Commission Project No. 510561. We also would like to thank Anna Réz for reviewing English.

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Correspondence to Leonardo Burlini.

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Burlini, L., Teixeira, K.R.S., Szabó, M.P.J. et al. Molecular dissimilarities of Rhipicephalus sanguineus (Acari: Ixodidae) in Brazil and its relation with samples throughout the world: is there a geographical pattern?. Exp Appl Acarol 50, 361–374 (2010). https://doi.org/10.1007/s10493-009-9321-8

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