Dynamics of boophilus ticks and its role in transmission of piroplasms at behaira district

الملخص EN

Dynamics of boophilus tick was investigated at behaira district.

a total number of 86 out of 839 cattle (10.25%) were infected with boophilus spp.

the prevalence of boophilus spp infection predominated in summer season (21.33%) followed by autumn (10.78%) and last spring (6.34%) and the lowest burden was in winter.

concerning the locality, el-Dalangat was representing the highest locality infected with tick vector (17.39%) and according to age, the animals less than one year was the lowest one infected with tick (5.17%) then animals which were aged 1-3 years (9.8%) and animals more than 3 years (10.75%).the neck and dewlap representing the highest predilection seats of boophilus spp.

(81.39%) in cattle and the lowest one was udder (2.94%).

hemolymph and salivary gland samples of 56 boophilus spp were extracted, stained by giemsa and microscopically inspected under oil immersion lens.

the total infection of hemolymph with ookinete was 28.57% that increased in summer season (32.14%).

the total infection rate was 21.43% and increased in summer (25%) and no infection was recorded in winter.

electron microscopic examination of salivary gland of boophilus spp.

showed a presence of electron-dense, irregular- shaped sporozoites in some infected cells.