The varroa population is growing at an exponential rate.
Every month it doubles.1 This is why it is important not to rely solely on a late-season treatment.
We tried it: Takeaways from a field efficacy trial in Spain. If you are wondering whether you could treat your colonies with oxalic acid during the season, how it works, and which product to use, take a look at the …
As the days are getting longer, and we are all looking forward to those extra rays of sunshine, you are not alone in the desire to stretch your legs and get fit for the warm season. Your bees are “stretching …
In autumn or winter, as soon as the temperature drops to below 10°C, bees prefer to stay inside the hive and sit closely together, forming a cluster around the queen. Only a few insects, such as ants and honeybees, can survive the winter as a colony.
Each year, thousands of beekeepers use treatments to combat Varroa destructor. These treatments are based on different active substances and offer different modes of action, kinetics and application forms. Yet, it is often forgotten that a mite treatment is, first and foremost, a veterinary medicine.
EVA–Véto-pharma becomes the company’s reference R&D centre and now hosts its anti-Varroa mite research team
The Véto-pharma R&D team will now occupy part of EVA in order to intensify its search for new active substances to combat major bee predators, including Varroa mites.
Each year, several thousand of you use treatments to combat Varroa destructor. These treatments are based on different active substances (amitraz, oxalic acid, thymol, formic acid, tau-fluvalinate, etc.) and offer several methods of action and administration routes (rapid action, long action, contact, trickling, sublimation, etc.).
1- Marwan Keshlaf, Hamida B. Mirwan – Population Dynamics of Varroa Mites and Bee Lice in Honey Bees Colonies – University of Tripoli, Faculty of Agriculture – 2018
According to a survey conducted each year in Eastern France, the later the treatment is applied, the higher the winter losses. Study conducted in 2020 on more than 29,000 hives.
3- Poonia, Asha & Gulati, Rachna & Sharma, S.K.. (2014). Effect of environmental factors on the population of Varroa destructor in Apis mellifera l. Colonies. The eCOSCAN.
The varroa population was significantly positively correlated with maximum (r = 0.659) and minimum (r = 0.648) temperature.
4- Smoliński, S., Langowska, A. & Glazaczow, A. Raised seasonal temperatures reinforce autumn Varroa destructor infestation in honey bee colonies. Sci Rep11, 22256 (2021).
Statistically significant difference (p = 0.039) between Caucasian and Buckfast bees.