الفهرس 
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Abstract
Evaluation of varroa percentages on Adult workers and broods of honey bee colonies:
The guessing experiments were carried out to measure infestation percentages with varroa in honey bee colony inside the covered brood and on the adult workers and as well on the grooming and hygiene behaviour.
The regular examination of brood and adult worker samples from honey bee races under infestation with varroa mites in the different races were significantly different The mean of infestation percentages were high in Italian hybrid (19.20%), while the lowest infestation percentages were recorded in Egyptian hybrid (11%) and finally the of infestation percentages in Carniola and Egyptian (Upper Egypt) were moderate (12.2 &13.60), respectively.
5.2. Evaluation of groming for different selected strains:
The results in table (5) and figure (29) show the evaluation of grooming behaviour for the selected strain; local carniola hybrid, hybrid Italian local, Egyptian Upper Egypt and Egyptian Alexandria.
Statistical analyses showed that there is a highly significant differences between the Hybrid Italian local strain and the Local carniola hybrid strain. In the same time there is no significant differences between the Egyptian Upper Egypt strain and the Egyptian Alexandria strain.