Journal
EXPERIMENTAL AND APPLIED ACAROLOGY
Volume 50, Issue 4, Pages 361-374Publisher
SPRINGER
DOI: 10.1007/s10493-009-9321-8
Keywords
Genotypic variability; Rhipicephalus sanguineus; Brazil; 12S mt-rDNA; 16S mt-rDNA; Latitude
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Funding
- Curso de Pos-Graduacao em Ciencias Veterinarias (CPGCV)/Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
- Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- European Commission [510561]
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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 25A degrees N to 22A degrees 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 29A degrees N and below 30A degrees S with ticks from Argentina, Uruguay, France, Oklahoma (USA), Israel and Egypt.
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