The recent discussions concerning Jay Smiths queen rearing book revived an old train of thought. What about grafting the eggs rather than the larva?
A grafted egg would have the early feeding advantages described by Jay Smith. And using grafting techniques would allow the convenience of plastic cups, etc. for large scale production.
Steve Taber designed a set of forceps that would grab an egg without pinching it. He used it to graft eggs with mixed results. Success was lower than when using larva and some intermorphs were reared. I built a set of these forceps for myself.
I suspect that the use of forceps damaged or disturbed the egg in some manner as the eggs aren't as uniformly sized as one would think. I've wondered if another technique, like using an eye dropper to hydraulically scavange eggs from their cells, or maybe even suck them off the a water surface and deposit them in a queen cup might work better.
Anyone with any thoughts or experience?