>It is the pollen available naturally in nectar. Which is its influence in
foragers' total protein?

Juanse, I have seen few analyses of the amount of pollen in nectar.  One
study looked at almond nectar, and found a small amount of pollen.  It
would largely depend upon the flower shape whether pollen could fall into
the nectaries.  My GUESS is that the amount would be insignificant.

Note that flowers that target butterflies tend to have more amino acids in
the nectar, since butterflies don't eat pollen (wrong sort of mouthparts).
 So bees foraging on those flowers would get amino acids from the nectar.

Feliz Navidad!

--
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com

             ***********************************************
The BEE-L mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software.  For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html

Guidelines for posting to BEE-L can be found at:
http://honeybeeworld.com/bee-l/guidelines.htm