Abstract
The dissemination of vector arthropods harbouring zoonotic pathogens through the uncontrolled transboundary trade of exotic and pet animals poses an important threat to Public Health. In the present report, we describe the introduction of pathogenic Rickettsia africae and R.aeschlimanni in ticks removed from imported tortoises in Qatar. A total of 21 ticks were collected from pet spur-thighed tortoises (Testudo graeca) from Doha, May 2018, and studied for species identification and characterization of Rickettsia spp. Morphological and molecular analysis of ticks allowed their identification as Hyalomma aegyptium. Molecular analysis of partial ompA and gltA genes showed that Rickettsia sequences found on these ticks clustered with sequences classified as R.aeschilimanii and R.africae. Since pre-adult stages of H.aegyptium also feed on humans, this tick species may play a role in the transmission of R.aeschilimanii and R.africae. We alert for the introduction of non-native pets as vehicles for tick importation, known vectors for animal and human pathogenic agents. Importation of exotic species into non-autochthonous countries deserves strict control to enforce robust surveillance and mitigate potential exotic diseases epidemics.
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