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First molecular detection of Theileria ovis in Rhipicephalus sanguineus tick in Iran

Asian Pacific Journal of Tropical Medicine 2012年第1期5卷 29-32页

作者： Telmadarraiy Zakkyeh Oshaghi Mohammad Ali Hosseini Vasoukolaei Nasibeh Yaghoobi Ershadi Mohammad Reza Babamahmoudi Farhang Mohtarami Fatemeh Department of Medical Entomology and Vector Control School of Public HealthTehran University of Medical SciencesIran Department of Infectious Diseases Mazandaran University of Medical SciencesIran

Objective:To determine tick infestation of domestic ruminants and their infection to ovine theileriosis in northern Iran.Methods:About 425 domestic ruminants in Ghaemshahr city in northern Iran were inspected for tick infestations.Twenty tick specimens(13 females and 7 males) of Rhipicephalus sanguineus(R.sanguineus).the most common lick in the study area, were tested by PCR amplification against 18s rRNA genome of Theileria spp using specie specific primers and then the PCR products were sequenced for species identification In comparison with data base available in GenBank.Results:About 323 ticks were collected from 102 animals(88 sheep,12 goats and 2 cattle).The prevalence of ticks infesting animals was R.sanguineus(82.35%), Rhipieeplialus bursa(R.bursa)(0.3%),Ixodes ricinus(I.ricinus)(15.2%),Boophilus annulatus (B.annulalus)(1.2%).Haemaphxsalis punctata(H.punctata)(0.3%) and Haemaphysalis numidiana(H.numidianu)(0.6%).Eleven(55%) tick specimens were PCR positive against genome of Theileria ovis(T.avis).Sequence analysis of the PCR products confirmed presence of T. oris in one R.sanguinus.Conclusions:This is the first report of tick infection to T.oris in Iran. Due to dominant prevalence of R.sanguineus as well as its infection to T.oris,it is postulated this tick is the main vector of ovine theileriosis in northern Iran.

关键词： Theileria ovis Rhipicephalus sanguineus PCR Iran

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