Abstract
The objective of this study was to identify and determine the prevalence of tick species infesting sheep in some areas of Thamar governorate, Yemen. A total of 392 indigenous sheep breeds of either sex and different age were randomly selected and examined for presence of ticks using standard parasitological techniques from December, 2010 to May, 2011. The results revealed that the overall prevalence of tick infestations on sheep was 43.37 %. Of total 875 ticks collected, Seven species of ixodid ticks were identified. The species on hierarchy of overall prevalence abundance were Rhipicephalus sanguineus (13.01%), Rhipicephalus (Boophilus) decoloratus (9.69%), Rhipicephalus evertsi evertsi (5.87 %), Hyalomma marginatum (4.59 %), Amblyomma variegatum (4.34%), Rhipicephalus (Boophilus) annulatus (3.06%), Haemaphysalis sulcata (2.04%). Rhipicephalus (Boophilus) decoloratus species is recorded for first time in Thamar governorate and Yemen as well as. Statistically, there was significance difference (P
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