Tick diversity and species richness were calculated on the basis of two factors: seasonal activity and host, the Margalf species richness index showed that the highest richness was related to summer (1.4234), and the lowest richness was related to winter (0.7379). The species diversity of ticks collected at different seasons in the research region was also significantly different (P<0.05).

The highest species diversity was related to summer (2.1709), and the lowest species diversity was related to winter (0.781), according to the Shannon-Wiener index measurements. The index of evennes of ticks collected during different seasons in the research region was significantly different (P<0.05). The evennes index analysis found that the highest uniformity was in relation to the summer season (0.9428) and the lowest uniformity was in relation to the autumn season (0.4428). The Simpson species diversity index also showed that the highest diversity was correlated with summer (0.8622), and the lowest diversity was associated with autumn (0.3549). The results of this study found that the species richness of ticks collected in the Sarab region during the first and second six months of the year had a significant difference (P<0.05), and the first six months of the year had higher and more diversity and richness of species than the second six months of the year (Table 2).