hi,i checked my test sheet today after putting some Bayvarol strips in yesterday and counted 14 mite.is this alot or should i be concerned.i am new to this so if i could get some positive answers.thanks
Kune, can you answer the exam question please - in what part of the UK do you live? The fact that only a few mites fell out despite your overdosing means either you don't have many mites or the mites you have are resistant to the chemical in the strips.
As a control you could try chucking some icing sugar at them and see how many mites fall out. Ditto uncapping any drone brood. An infestation of more than 5% (1 in 20 drone pupa) would be a matter of concern although at this time of the year it could be a bit higher but either way it would suggest the presence of plenty of varroa.
But, a big but this having re-read your post, if you have seen bees with deformed wings you DO have a major varroa problem and 14 mites did not cause this. Even in a 5 frame colony expect several hundred to fall out if you treat effectively.
i did find ....... a few mites before i put them in.
Think! Doesn't this answer your question before posting this, after being told specifically that the mite is resistant to Bavarol in most areas of the UK?
There will be typically 20% of the total loading as the phoretic stage in the hive at this time of the year.
Seems that your bees may have come from a 'non-resistance' area but that result makes it looks very much like they did not.
Also without any history of the colony we would have no idea if this 'small nuc' was made up a very few days ago, using brood frames from a severely infested colony and 'relatively clean' bees from another source. It happens a lot.