| some observations on ticks (acari: ixodidae) infesting sheep in river nile province of northern sudan. | five species of ixodid ticks were found in a cross-sectional survey in which 200 sheep were examined for ticks in river nile province, sudan. hyalomma anatolicum anatolicum was the predominant species (73.6%), whereas ticks belonging to the rhipicephalus sanguineus group (14.7%), rhipicephalus evertsi evertsi (9.1%), rhipicephalus simus (2%) and hyalomma dromedarii (0.5%) were also found. the mean tick load was 11.2 per animal. in a subsequent longitudinal survey ticks were collected on a monthl ... | 2005 | 16300192 |
| preliminary survey of ticks (acari: ixodidae) on cattle in northern sudan. | in a cross sectional survey conducted during the period june 2001 to july 2002, the geographical distribution of ticks on cattle in the sudan was determined. seventeen locations were surveyed from northern, central, eastern, western, blue nile and white nile provinces. total body collections of ticks were made from 20 cattle at each location. four tick genera and 11 species were identified. the tick species collected included amblyomma lepidum, amblyomma variegatum, boophilus decoloratus, hyalom ... | 2004 | 15732459 |
| ticks (acari:ixodidae) of the blue and white nile ecosystems in the sudan with particular reference to the rhipicephalus sanguineus group. | twenty-four adult ixodid tick species, infesting livestock and some wildlife hosts along the blue and white nile in the sudan, were identified. three species, boophilus geigyi, rhipicephalus camicasi and r. bergeoni, were recorded for the first time from the sudan. tick numbers on indigenous breeds of cattle (bos indicus) were relatively low, ranging between 17.1 and 40.5 per animal. young cattle grazing with the herd carried significantly fewer ticks than older animals. with the exception of b. ... | 1987 | 3331134 |