Hyperthermia -a non-chemical control strategy against varroa

https://www.researchgate.net/publication/322874323_Hyperthermia_-a_non-chemical_control_strategy_against_varroa

A percentage of 

12.9% of varroa mites were found dead inside brood 

cells after 120 minutes treatment. This percentage 

reached 57.8% after 240 minutes treatment, 92.6% 

after 360 min and 100% after 480 minutes.

Up to 120 minutes 

of treatment the brood was not affected negatively, 

whereas after 240 minutes, a percentage from 6% to 

50% of the larvae seized to develop and died.

More than 50% of the mites dropped off adult 

bees after 60 minute-treatment and about 76% 

after 480 minute-treatment