Infestation rates of Varroa destructor and Braula coeca in the savannah honey bee (Apis mellifera scutellata)

Infestation rates of Varroa destructor and Braula coeca in the savannah honey bee (Apis mellifera scutellata) Ursula Strauss, Christian W W Pirk, Vincent Dietemann, Robin M Crewe and Hannelie Human Social Insect Research Group, Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield, Pretoria, South Africa 0028. Agroscope, Swiss Bee Research Centre, 3003 Bern, Switzerland.