Queen puzzle

[gavin]

OK, here are the facts. On 3 July I moved a queen out of a double brood colony into a nuc where she is still to be found. I moved in some grafts on that day (into the middle of the top box) and will distribute the resulting queen cells to Apideas tomorrow, the day before they are due to hatch. On 10 July we grafted again into the four spaces in the bar, alongside 5 good mature Q cells.

Today, no Q cells being drawn from the four grafted 3 days ago (the cups are empty), no unsealed brood in the colony apart from a couple of drone cells and two of these:



One was on the frame adjacent to the grafts, one on the next frame along. On the bottom bars of the top box in this double brood colony.

What on earth?! Most likely explanation seems workers moving the grafted young larvae into queen cups elsewhere in the box. I'm almost tempted to graft from an Italian-looking stock to see if they do it again with a stock of different colour. Other explanations could be drone eggs laid by workers (they don't look like them but I'll grow them on to check), or thelytoky (Google it if you need). I can't imagine that a queen would visit just to lay a couple of eggs.

[Jon]

Hi Gav. If the larva in the picture was introduced 3 days ago and moved it would be a lot bigger than this so the egg must have come from elsewhere imho.

[gavin]

Yeah, you are right it is a young larva. I'd have to invoke suspended animation for the larva-moving theory to be valid. Worker-laid egg then? Still worth growing on to see if it is drone or not. Do you see such queen cells sometimes?

This colony has a circle of pollen all round its brood nest - I'll put up a picture later.

[Jon]

Roger Patterson has this theory that workers can 'hold back' larvae and develop them into queens later.
He has found queen cells started several days after when it should not have been possible, ie about 8-9 days after the removal of a queen.
I don't think that is logical as a starved larva in not going to turn into a good queen.
I think it more likely that an egg can remain dormant before developing normally, especially if the egg is at a frame edge where it is likely to be chilled.
I think I posted before that I once removed a piece of brace comb which had a few eggs in it. It lay on a shelf in my shed for 2 or 3 days and I then used it as a starter strip in an apidea frame. They managed to start off a few larvae from it.

[Rosie]

I would not be surprised to find that eggs can remain viable if left cold like a hens egg. A bit of brooding either from a hen or a colony will get them warm and start them developing. On the other hand, some people believe that this sort of phenomenon is explained by bees steeling eggs from neighbouring colonies.

I just hope you get a queen out of it and not a chicken!

Rosie

[gavin]

I should have roller caged those queen cells with the ornate head/foot gear yesterday when I had the chance. Two of them were torn down when I visited an hour ago so two Apideas freshly charged with bees from my own apiary will have to wait for a surrogate mum.

I'm thinking that I missed an emergency Q cell in the host colony and that a virgin emerged ahead of the grafts earlier today. Maybe tomorrow I'll rearrange the colony with a queen excluder and carry on using it as a queen-right cell raiser?

For the time being I have at least one extra queen cell on that frame.