Potential tick vectors for Theileria equi in Israel

S. Tirosh-Levy, A. Steinman, A. Einhorn, D. A. Apanaskevich, K. Y. Mumcuoglu, Y. Gottlieb*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Theileria equi Mehlhorn and Schein, 1998 (Piroplasmida: Babesiidae) is an important tick-borne pathogen of horses that is highly endemic in many parts of the world, including Israel. The present study evaluated the potential roles of five hard tick species [Hyalomma excavatum Koch, 1844; Hyalomma marginatum Koch, 1844; Rhipicephalus turanicus Pomerantsev 1936; Rhipicephalus annulatus Say, 1821; Haemaphysalis parva (Neumann, 1897) (all: Ixodida: Ixodidae)], previously found to infest horses in Israel, in acting as vectors for piroplasmosis. For this, DNA was extracted from whole ticks and, when possible, from the salivary glands in each species (n = 10–59). Polymerase chain reaction amplification and sequencing of the 18S rRNA gene were used to detect T. equi in 48 of the 127 ticks (37.8%) and in 21 of the 90 extracted salivary glands (23.3%) in all five species. All but two sequences were classified as T. equi genotype A; the remaining two were classified as genotype D. The findings of this study point to Ha. parva and R. annulatus as potential novel vectors of T. equi, and suggest that parasite genotype selection occurs within the tick vector.

Original languageAmerican English
Pages (from-to)291-294
Number of pages4
JournalMedical and Veterinary Entomology
Volume34
Issue number3
DOIs
StatePublished - 1 Sep 2020

Bibliographical note

Publisher Copyright:
© 2020 The Royal Entomological Society

Keywords

  • Equine piroplamosis
  • haemoprotozoan parasite
  • ixodid ticks
  • salivary glands
  • vector-borne disease

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