Abstract
The biology of the parasitic mite Tropilaelaps clareae Delfinado and Baker (Acarina: Laelapidae) was studied with a view to identify the time of invasion of the mite into the honey bee (Apis mellifera) brood and the threshold stage in the life cycle of the host. Honey bee brood was sequentially sampled on day 0, 4, 8, 12, 16 and 20 of development. Adult T. clareae infested the 8-day larva shortly before its cell was capped. The larvac, protonymphs, deutonymphs and adults of T. clareae were all found parasitising bright red eyed pupae during day 16 of brood development. This was identified as the most parasitised stage in the life cycle of the host. The mite developed from egg to adult in about 8 days.
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