Jon check this out -
http://www.coloss.org/beebook/I/artificial-rearing/4/5
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Jon check this out -
http://www.coloss.org/beebook/I/artificial-rearing/4/5
Still not convinced it is a critical factor. I do try and place them in the cup the same way up though. Must do a graft where I deliberately turn every one over and see how many get started.
Do you remember that time-lapse video that was doing the rounds? I think they all went clockwise as they munched through (or hoovered up) the brood food. That suggests (if true) that they have a preferred side to lie on.
Nope, it isn't true. Some go clockwise, some anti-clockwise. They can lie on either side.
https://www.youtube.com/watch?v=f6mJ7e5YmnE
Some graft by washing larvae out of the comb in weak syrup/honey, then picking them up from a tray with a paintbrush and putting them into the cells. There's a video of this - Polish? - on YouTube I think. This was large scale grafting. I've done this with slightly older larvae than normal and it works well.
Sidedness is a myth in my view.