Effect of Two Hive Height Levels on some Honeybee Activities and Hornet Attacking under Nasr City, Conditions, Cairo, Egypt.

The research was carried out at apiary of Department of Plant protection, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt, to determine the effects of locality levels of hives on acceptance, mating success and pre-oviposition period of Carniolan F₁ hybrid and Italian F₁ hybrid queens and, the effect of locality levels of hives on brood inch² and pollen collection per gram, as well as, the effect on wasp traps efficiency under Nasr City conditions. the mean percentage of acceptance was 100% for lower and upper (Carniolan F₁ hybrid and Italian F₁ hybrid queens) except mating success in lower Carniolan F₁ hybrid was 88.89% while the pre-oviposition period for Carniolan F₁ hybrid and Italian F₁ hybrid were (12.50, 11 .83, 10.83 and 10.00 days) respectively. The mean of sealed worker brood inch square / colony were (133.33, 74.66, 46.60 and 35.11). The mean pollen gathering in gram / colony were (3.08, 4.33, 3.35, 2.76 and 2.35 for lower and 1.07, 1.55, 1.09, 0.81 and 1.00 for upper from (6-8, 8-10, 10-12, 12-2 and 2-4 Am) respectively. The relation between number of Vespa orientalis and pollen gathering was obviously noticed in upper more than lower. The results were statistically analyzed and discussed.