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The spur-thighed tortoise ( Testudo graeca  L., 1758) is classified as a vulnerable species by the IUCN. In this context, it is important to explore the factors affecting its populations to set up an effective conservation plan. The present study was carried out in seven localities of Morocco with the objective to determine the ticks parasitizing this tortoise and their prevalence in relation to host characteristics and environmental factors. We examined 392 free-living tortoises for the presence of ticks during the spring 2018. A total number of 2238 adult ticks (no immature tick detected) were collected and all identified as  Hyalomma aegyptium . Infection with at least one tick was detected in 77.6% ± 6.5 of the total tortoises. The infestation prevalence varied according to localities. Infestation intensity varied from 1.5 to 12, while tick abundance ranged from 0.65 to 12 ticks/tortoise. Male tortoises were more infested than females (P &lt; 0.01) and the infestation was age-dependant. Our statistical result provides that the best model drivers tick parasitism was which included locality and age. Further studies are needed to assess the impact of the high intensity of  H. aegyptium  infestation on the tortoise’s health status and to assess the potential transmission of zoonotic pathogens.

Cross-sectional study of ticks in the vulnerable free-living spur-thighed tortoise Testudo graeca (Testudines: Testudinidae) from Morocco