Free Access
Volume 23, Number 6, 1992
Page(s) 503 - 508
Apidologie 23 (1992) 503-508
DOI: 10.1051/apido:19920602

Distribution of Acarapis woodi Rennie in the tracheae of honey bees

I. Fries and R.A. Morse

Entomology Department, Cornell University, Ithaca, NY 14853, USA

Abstract - Colonies infested by Acarapis woodi were analysed for the percentage of bilateral and unilateral infestations in the main tracheal trunks of infested bees. A χ2 analysis demonstrated that the infestations were not randomly distributed in bee tracheae (p < 0.001, n = 1 512), but that more bilateral infestations occurred than expected. Calculations from literature data confirmed this observation. The possible reasons for the skewed distribution have been discussed.

Key words: Acarapis woodi / distribution / trachea / Apis mellifera / sensitivity-resistance