You should be aware that this is shaping up to be a bad year for colony losses, seemingly due to very levels of varroa. No doubt the odd weather this year has had an influence.
There has been much correspondence on the HWBKA WhatsApp group about losses. Our own Honey Queen Helen Hadley posted she had lost 3 and now reckons it is 9 so far. John Miller has lost one …the only one he forgot to treat. As a result, I (PC) inspected my own colonies a couple of days ago and discovered to my dismay I have lost 7 out of 12 so far.
There had been some talk of absconding on WhatsApp and indeed some of my deceased colonies which were previously very strong had just a few 10’s of bees left and loads of untouched stores, which puzzled me.
I decided to contact the Regional Bee Inspector Dan Etheridge, sent him some notes and had very long and very interesting conversation with him. His first impression is that I experienced a 'varroa bomb' as Randy Oliver calls them. Apparently, he reckons we are having the worst year ever for varroa induced colony collapses especially in the south; quote ...’my phone has not stopped ringing since the Christmas break’. For those of you who have been very rigorous in your varroa treatments it may not be such a problem.
As some of you know I have for more than a decade now tried to practice a policy of minimum intervention in the hope that by not treating quite so vigorously and supporting strains unable to tolerate varroa we might expect natural selection to do what it should and establish a new equilibrium with more tolerant bees, plus there is much published literature that bees are adapting. It had been working out. After 10+ years with very few losses I suppose I had been lulled into a false sense of security. However, this time I have been caught out.
Dan was at great pains to point out that he is not against 'natural beekeeping' in the slightest and indeed tried himself for many years. However, he was also at great pains to point out, and this is the very important salutary lesson I will take away from this experience, that one must monitor varroa very regularly and accurately. At least once a month and preferably using the alcohol or sugar wash technique rather than relying on the sticky board which he has found unreliable, otherwise, given the right conditions the varroa numbers can explode ‘exponentially’. Had I done this more conscientiously I would not have been caught out as I have been. It's not necessary to treat with varroacides religiously, regularly, needlessly or prophylactically. But it is essential to treat when really needed.
So, I’ll be going out to treat my remaining 5 colonies with the vaporiser tomorrow, 3 times 5 days apart as I’ve missed the brood break …not there would have been one in this record-breaking warm winter.
The completely empty ‘Marie Celeste’ colonies you’ll see in the photograph, and which one might think have absconded are not so unusual apparently as in some colonies most of the ailing bees have the decency to do a Captain Oates and take themselves off to die elsewhere.
Malcolm has been in touch with many members and is finding that losses are mounting. Such losses are more typically seen in February / March … this not looking like a ‘normal’ year
So, the message is check your hives now, and if concerned, it might not be too late to rescue them with an Oxalic acid sublimation …using ApiBioxal the approved product of course!
Not a good start to the year!