Poisoning of HoneyBees Flashcards
what are bees severely and fatally affected by
pesticides and fertilizers
poisonous plants
acaricides
what plant causes accumulation of toxins in bees and what toxin
spotted loco wood - astragalus lentiginosus
selenium
effect of plant poisoning on bees
More gradual and last longer
toxicity of pollen
only pollen from some plants - can kill adults or some can kill when passed to the brood
other types of plant toxins
honey can be psychoactive and toxic to humans but not to bees or larvae
systemic insecticides
neonicotinoids like imidacloprid and fipronil are toxic and persistent also produce immune suppression
poisoning of bee during blooming
due to insecticides applied to crops
normal die off rate of bees
less than 100 per day
low kill of bees
200-400 a day
moderate kill of bees
500-900 per day
high kill of bees
over 1000 bees per day
poisoning symptoms
excessive no. of dead bees
lack of foraging bees
aggressiveness
paralysis and abnormal activity
abnormal communication dances
bees poisoned with sevin or dieldrin
will slow down and appear to have been chilled
when are queens affects
with slow acting material such as arsenicals and sevin - will lay eggs in a poor pattern
is honey affected by poisoning
usually not as bees die outside the hive
