International trade of animals may represent a gateway for the spreading of zoonotic pathogens and their vectors. Amongst animals, reptiles are commonly illegally imported worldwide, being Italy in the fifth position of importation of these animals. Thus, the current study analysed the pathogens associated with Hyalomma aegyptium ticks, which were collected from illegally imported tortoises from North Africa to Italy. All tick DNA samples were tested by conventional PCR for the presence of Anaplasma spp., Babesia spp., Borrelia spp., Coxiella burnetti, Ehrlichia spp., Hepatozoon spp., Rickettsia spp. and microfilariae of filarioids. Out of 22% (n=161) of ticks screened, 78.9% (n=127) were males and 21.1% (n=34) females. Among them, three male specimens collected from two different turtles (1.9%; 95% CI; 0.5-5.5) scored positive for Anaplasma spp./Ehrlichia spp., whereas all females were negative. BLAST analysis of the sequences obtained from positive samples revealed 99-99.3% nucleotide identity with the sequence of Ehrlichia ewingii available in GenBank. The finding of E. ewingii in ticks from imported reptiles warrants the need for imposing strict rules in the international trade of reptiles to effectively reduce the introduction of exotic pathogens and their vectors in new geographic areas.
Keywords: Ehrlichia ewingii; Italy; Testudo graeca; illegal trade; reptiles.
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