Bumble bee pollen -- 001

Bumble bee pollen -- 001

red bee pollen cups

The scientists conducted a laboratory cage study in which they placed bees in cages in the absence of floral cues. Instead of flowers, they presented the bees with fresh pollen from different plants. The cages were also placed in darkness so that the bees could take no visual cues from the pollen. The scientist found that bees preferred pollen with higher protein-to-lipid ratios. A red light was used to observe the bees, as pure red is outside of bees’ visual spectrum, meaning the room remained dark to them. 

Image: Anthony Vaudo / Penn State
Licensing and Use