Worker honeybees (Apis mellifera carnica Polm.) were treated with imidacloprid or coumaphos. Significant effects of treatment and treatment duration were found on hypopharyngeal glands (HPG) acinus diameter (P < 0.05) in long term (48 h and 72 h) treatments. Short term (24 h) imidacloprid treatment induced heat shock protein 70 (Hsp 70) and Hsp 90 localisation Coumaphos triggered an increased level of programmed cell death, and imidacloprid induced extended necrosis in comparison to coumaphos.
COBISS.SI-ID: 3171432
Honey bee (Apis mellifera carnica) colonies were placed in two apple orchards treated with the insecticides diazinon and thiacloprid and the fungicide difenoconazole. Pollen and bee bread were collected from combs inside the hives. The residue of diazinon in pollen loads 10 days after orchard treatment was 0.09 mg/kg, and the same amount of residue was found in bee bread 16 days after treatment. In pollen loads 6 days after application 0.03 mg/kg of thiacloprid residues and 0.01 mg/kg of difenoconazole were found on the first day after application.
COBISS.SI-ID: 3020392