Showing posts with label varroa. Show all posts
Showing posts with label varroa. Show all posts

Sunday, 15 June 2014

Sweet bees

I really wish I hadn't thought of that as a title for a blog....The Eurythmics "Sweet dreams (are made of this)" is one of my favourite songs and now I've got a dreadful attack of earworm.

Oh well.... on with the bees.....

Last week at the Apiary science night we were examining "litter" that falls through the mesh floor of a hive.  I'd stuck a couple of Varroa boards under 2 of my hives and collected a fair number of broken legs, pollen baskets, wax scales and a rather high number of Varroa mites.  Ugh!

Can't bear to think that my girls might be suffering with unwanted passengers....


Something definitely needed to be done about this.  After a bit of consultation about how to treat for Varroa without taking off honey supers, the best advice was dust them with icing sugar to encourage them to groom each other and hope they knock the Varroa off.

So here I am, in my ever glamorous marigold gloves, dusting bees with icing sugar...

 

 

Pretty soon they were all lightly dusted....



Its fair to say that some were more lightly dusted than others....


But they didn't seem unduly bothered....


 Look at all those proboscis and tongues.....
Straight out for a sugar fix!





I'll have to count mites again in a few days and see how well they licked each other clean!

Saturday, 29 September 2012

Concentrate......science bit

The bee keeping year ends with making sure your bees are as healthy as possible to get them through the winter.  The two main parasites to fend off are Nosema and Varroa, neither is nice to deal with but it needs to be done....

Nosema testing came first.  Sadly the spores of the parasite live in the guts of the bee so the only way to test for it is to obtain a sample of bees. The books suggest that the simplest way to obtain the recommended sample size of 30 bees is to suit up, grab a jam jar and behave like a woodpecker...

 

So having held the jam jar over the hive entrance, and knocked rapidly on the hive -just like a woodpecker would if it was trying to get in there to steal honey, its really easy (!) to get the lid on the jam jar of angry bees that came rushing out to get the woodpecker...


Their day got even worse when I popped them in the freezer to euthanise them - I guess the least said about that the better...except it doesn't really get better - for the bees at least...

 

'Cos after being frozen and defrosted they got their abdomens carefully snipped off...

 

And there's only one thing better than one abdomen ....and that's the full sample size of at least 30...    :(
and as if that wasn't brutal enough they then got pulverised and made into soup with a little sterilised water...


And then a little drip of bee gut soup is examined on a microscope slide and the anxious bee keeper gets to hope they don't see too many of these... those little things that look like rice grains are the bad guys and thankfully there were very few of them in my bees...so no nasty chemical treatment this year - PHEW!

So then it was onto Varroa control.  Varroa is a nasty little mite that piggie-backs the bee and sucks its "blood" (technically its hemolymph), rather like fleas bother dogs, a healthy animal (or bee colony) can cope with some but there's a tipping point where there are just too many open wounds and the bees become more vulnerable to other infections and pretty soon the whole colony is compromised.

So keeping the number of varroa mites in your bee colony to the absolute minimum is key to success.  Thankfully there are a number of effective pyrethroids which when mixed with sugar fondant and eaten by bees cause the mites to fall off the bees.  So its simple enough to put some in the top of the hive, slip a board underneath to catch the bodies and wait and see what you find...


24 hours later....


There's not too much to see....perhaps I should leave it in there for a bit longer, then there'll be a bit more to see...

Lots of bits of beeswax and bits of dead bee weren't really what I was looking for - what I'm after are little red crab looking mites...

  
And suddenly ...no sooner had I seen one than there were loads of them ...   :(

 

You think that looks bad.... look what I found a couple of days later...


So looks like I'll be treating them again in the spring.

And woe is me...look who else I found...


This looked suspiciously like a wax moth grub.  These little grubs live exactly up to their name - they are the grub of a moth specifically adapted to feed on beeswax.  In the wild they are probably really useful for clearing up all the bits of wax that fall from a hive but in a modern hive they can destroy lots of wax by burrowing through it out of the reach of workers, who would sting them and throw them out of the hive.

So the best thing to do is find as many as you can ...








They are grotesquely greasy (well you would be too if all you ate was beeswax) I'm sure there was a Dr Who monster based on them once back in the days when I was young enough to be scared by Dr Who.
I can freeze the frames that the bees will store honey in so that any that have made it there will be killed - there'll be no extra protein in MY honey.
But for now, there is nothing else to do other than scrabble around under the hive and scoop them out of their webs where they are beginning to cocoon themselves ...

 




And apologise to their mother that there are going to be 4 less wax moths in my garden this year...


Sorry Mummy moth.


Saturday, 14 April 2012

Playing out with bees

The weather improved rapidly through the week so I had high hopes of being able to get my hands in a hive today.  :)  I wasn't disappointed!!


First of all - time to kit up.  There's nothing at all glamorous about a bee keeping suit, but it's suit up or be stung - so best to make the best of it - here I am happy to be suited and booted.  Yes the second least glamorous thing about bee keeping is Wellie boots, preferably not black as the bees tend to go for black clothing - being confused with a honey thieving bear is not something I fancied so I went for purple Wellies.  Just to be on the safe side.






As soon as we got the roofs off the hives it was clear the hives were full of thriving bees - there was honeycomb being built out of the crown board as the bees searched for more space and they'd even tried to build brood cells between the frames - sadly we pulled these apart as we opened the hives.




So on with the job in hand - to take out old brood frames that might be harbouring disease and the bees worst enemy - the varroa mite, and to replace them with fresh new frames of foundation wax.
So out with the old.....


And then shake the bees into the new brood box



Some of them took a while to settle into the new hive .....


Which left me with a few minutes whilst they calmed down to take a few pictures of a newly hatching baby bee....

What a lovely ending to a busy day...


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