In India, ectoparasitic mites Varroa destructor and Tropilaelaps clareae are causing severe damage to A. mellifera colonies. However, no damage in A. cerana colonies due to these mites has been reported.
Nature of damage:
i) Tropilaelaps clareae: This mite feeds only on bee brood. In case of severe infestation of this mite dead brood is thrown outside the hive by workers. The bee colonies may even abscond if control measures are not adopted. The diagnostic symptoms are:
i. Tropilaelaps clareae : Sulphur dusting on top bars @ 200mg/frame
ii. Varroa destructor: Formic acid fumigation @ 50ml/hive in sponge pads covered with perforated polythene bags. Level of mite infestation can be kept low by putting sugar (finely powdered sugar) @ 30g/frame and then sweeping sugar down between the frame spaces using a bee brush.
Last modified: Tuesday, 17 July 2012, 10:50 AM