"It may well have something to do with the ethyl oleate feedback loop from
foragers."

The ethyl oleate feedback loop is actually a double source one.

On one side the colony have the pheromone coming from the forager old bees,
that is placed in the incoming nectar will-be-honey. Therefore all the bees
that are engached on this nectar procesing receive it.

On the other side the brood pheromone is partially composed of ethyl oleate,
therefore, the bees related to brood feeding directly receive this
pheromone.

Could it be that there is a change in the amount and type of lipids in the
autum pollen with respect to spring or summer one?

I have just received the analisis of my year honey samples and the amount of
phenol polyphenols dramatically reduces with the seasons. Early honey have
50 mg/dl, summer honey have around 30 mg/dl while late honey have 15 mg/dl.

BTW , Propolis have 7000 mg/dl.


I bet something similar happens with fat in pollen.


-- 
Juanse Barros J.
APIZUR S.A.
Carrera 695
Gorbea - CHILE
+56-45-271693
08-3613310
http://apiaraucania.blogspot.com/
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