After that, no more unmarked bumblebees visited the site, only the previously marked animals.
The protruding stigma of long-styled flowers is much more likely to contact other parts of bumblebee bodies.
The bumblebees were immobilized with a soft plug in a tube with a coarse mesh on one end, through which the paint could be applied.
The honey bee and bumblebee industries provide several examples of the threats involved with pollinator introductions.
Problems with heterospecific pollen transfer among species may occur depending on the degree of floral constancy of individual bumblebee visitors.
This may be due to the fact that we did not discriminate between different body parts when collecting pollen from bumblebees.
Aerodynamics experts once believed that bumblebees should not be able to fly.
Daily visitation rate multiplied by flower life span gives the expected number of bumblebee visits that a flower received in a lifetime.
