Non-infectious disorders. the control of bee diseases Flashcards
neglected brood is caused by
sudden shortage of nurse bees
what leads to chilled brood
happens in early spring when broods nests expand rapidly and theres a shortage of adult bees - on fringes of the brood area
larvae of a chilled brood
yellowish
tinged with black on segmental margins
what is starved brood restricted to
larval stages - affected larvae not restricted to periphery of brood combs and larvae will crawl out of the brood cells in search for food
what causes overheating
sudden loss of worker bees to cool the colony down
how can bees overheat
without proper ventilation of access to water
newly emerged bee during overheating
may be wingless
worker bees during overheating
wet and wings appear to be hazy
some cases abnormally large amount of dead bees at hive entrance
when does genetic lethality occur
during all stages of development
Directions for sending diseases brood and adult honey bees for diagnosis
sample should be loosely wrapped in a paper bag/towel and newspaper
describe problem and give name and address
what bees are not okay for sampling
decayed bees
samples of brood
should be about 10x10 - no honey should be present
viral diseases treatment
no known direct treatment
when is black queen cell virus, bee virus Y and filamentous virus
suppressed
indirectly by control of nosema apis
how can paralysis be cured
replace old queens
control of american foulbrood
sterilisation of combs and honey
chemotherpay
treatment of american foulbrood
no treatment - destroy colony, kill adult population, birn everything
control of european foulbrood
destruction of diseased colonies required by law
sterilize and chemotherapy sample no of bees
atleast 100 bees
control of nosemosis apium
moving colonies entirely on to new wax foundation in the autumn and feeding sufficient syrup for them build up new comb and survive the winter has proved more successful
chemotherapy of nosemosis apis
fumagillin
malpig control
with chemotherapy there are no effective products
control of chalk broood
several anti fungal products available
stone brood control
no effective method
but heating of honey for 30mins at 60 degrees
varroosis control
chemotherapy - drugs to acaricid effects
natural substance
destroy brood in autumn
