Beesource Beekeeping Forums banner

1 - 7 of 7 Posts

·
Registered
Joined
·
195 Posts
Discussion Starter · #1 ·
I have taken alcohol mite was sample from areas where is drone and pollen. I mixed bees from three frames to be accurate. To my surprise I counted 23 mites. There is no capped brood because the hive has swarmed and I have collected already honey for myself and left the rest for them. Should I treat now and if so what method is best?
 

·
Registered
Joined
·
2,916 Posts
23 broodless per 300 = 11/12 with brood

so 4%, not over run, but time to be treating. Oxalic Acid would be my 1st choice for a broodless and superless hive
 

·
Registered
Joined
·
2,916 Posts
Research has shown that if you X it by 1.8 you have a number representative of the total infestation when brooded up, rember the bulk of the mites are in the capped brood see Lee Et Al (2010), https://articles.extension.org/medi...s_for_Varroa_destructor_in_Apis_mellifera.pdf
Most just 2x it for simplicity

You have to rember a wash gives you the percentage of mites to bees in the brood nest. But its not telling you the advrage mites poric mites in the whole hive (with out more math) the brood nest is a much higher number, and its used as its the most stable and repeatable.

as such its just a number, that the bean counters then correlated with the effect on the hive, then backed it up to come up with thresholds that are predictive of pending economic impacts on the hive.


look at it this way… shooting spitball numbers- A bee lives for about 6 weeks and is a nurse for about 1 week, so most of the phoric mites are on 1/6 of the bees

so if you roll 6% on nurse bees that really means something like 2% phoric and 10.8%(6x1.8) overall infestation(if you have brood). So if you roll 6% with no brood its about 1/2 the over all infestation then if there was brood.
 

·
Registered
Joined
·
2,935 Posts
dpula2: The easiest method at this time of the year,with hot summer temperatures,is to use Apivar strips. Do a search on YouTube for videos on how to install the strips. You can probably buy small amounts of the strips at local bee supply stores if you have them in your area.
 
1 - 7 of 7 Posts
Top