Some help on what has happened here

[Antipodes]

who said they'd seen that?

Post #16

 

[jenkinsbrynmair]

no he didn't

 

[Antipodes]

no he didn't

Let's just let him answer?

 

[jenkinsbrynmair]

OK, you're the expert on varroa I suppose

 

[Antipodes]

OK, you're the expert on varroa I suppose

No, I'm absolutely not!
In a case like this where the OP (CaptainCymru) has had this varroa issue and it kills the colony, what happens to the adult bees? You've answered the question well, thank you, but I'm also interested to hear from Madasafish and the OP (or anyone else) about their experiences with what happens with the adult bees when you get a colony that suddenly crashes - particularly a big one.

 

[jenkinsbrynmair]

what happens with the adult bees when you get a colony that suddenly crashes - particularly a big one.

you've been told but seem to be happy to remain in ignorance, I've seen it happen more than once and have been told of others from people who have witnessed it.
The OP himself has convinced himself (with no evidence) tjat they swarmed themselved to a standstill, but I think that is more based on guesswork than fact.

 

[Karol]

It doesn't look like foul brood to me, looks more like a virus epidemic, those hatching bees with their tongues poking out is the classic look of varroa collapse.
Maybe too little too late with treatment or domino effect of other collapsing colonies in the area.

Tongues poking out is also a sign of chemically tetanized muscle.