الفهرس | Only 14 pages are availabe for public view |
Abstract Honey bee (Apis mellifera.) colonies is subjected to infestation by many pests. The varroa mite (Varroa destructor) is considered the main ectoparasite on honey bee in Egypt and all over the world. in addition to the wax math and oriental hornet causes severe losses in honey bee colonies. Therefore, control of varroa mite, wax math and oriental hornet is an important step for protecting honeybee colonies and increasing its products (honey, royal jelly, pollen, and etc.) The experiments of this study were conducted in the apiary of the Bee Research Center in Dokki - Plant Protection Institute - Agricultural Research Center - Ministry of Agriculture The obtained results could be summarized as follow:- Varroa mites Varroa destructor. 1-Population dynamic of Varroa destructor. 1.1-The count numbers of naturally fallen dead mites on the hive bottom board: - 1.1.A-Under unshaded conditions:- The results showed the Italian hybrid had slight Population density all year (12.99 mites/ colony)While the Carniolian hybrid had high Population density over the all year( 48.41 mites/ colony) . B- Under shaded conditions:- The Italian hybrid had higher Population (28.07 mites/ colony) density than Carniolian hybrid ( 26.86 mites/ colony) 1.2Estimation of the numbers of Varroa mites in brood cells:- A-Under unshaded conditions:- The results showed also the Italian hybrid had slight Population density all over year (8.721 mites/ colony). While the Carniolian hybrid had high Population density all year (31.89 mites/ colony) B- Under shaded conditions:- The Italian hybrid has Population density (30.72 mites / colony ) higher than Carniolian hybrid ( 30.93 mites/ colony) 1.3Estimation of Varroa mites number in adult bees:- A-Under unshaded conditions:- The results showed also the Italian hybrid slight Population density all over year (4.57 mites/ colony). While the Carniolian hybrid high Population density all over year (13.57 mites/ colony). B- Under shaded conditions:- The Italian hybrid has Population density (9.97 mites/colony) higher than Carniolian hybrid (9.36 mites/ colony) |