Ixodid ticks infesting dogs in Torbat-e-Heidareih and Mashhad areas, Khorasan Razavi province. Iran Gholamreza Razmi 1*, Saeed Yaghfoori1. Ali Barati1 1- Department of Pathobiology, School of Veterinary Medicine, Ferdowsi University of Mashhad. P.O.Box: 91775-1793. razmi@ um.ac.ir Background and objectives: A survey was carried out to investigate the prevalence of hard tick species on dogs in Torbat-e-Heidareih and Mashhad areas from 2018-to 2019. Methodology: A total of 677 ixodid ticks were collected from 86 infested dogs during activating seasons of ticks. Adult ticks were identified under a stereo-microscope according to general identification keys. Results: Two ixodid species as Rhipicephalus sanguineus (57 %) and Rhipicephalus turanicus 42.7% were identified in infested dogs. R.sanguineus (87%) was dominant tick in stray dogs, while R. turanicus (80%) was dominant tick in sheepdogs. Discussion and Conclusion: The results showed that R.sanguineus and R. turanicus were important ixodid ticks in dogs in the areas and should be done more studies about role of ticks in transmission of blood parasites. Keywords: prevalence, Ixodid tick, dogs, Iran

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