| the effect of feeder location on pollen collection by bumble bees in a tomato greenhouse in ontario, canada. | the foraging behavior of bumble bees (bombus impatiens cresson) was examined as a function of feeder location containing sugar solution in a commercial tomato greenhouse in manotick, ontario, canada. the feeders were located within the nest-box (fed-close) or placed 1.5 m away (fed-far) and the placement of the two types of colonies was counterbalanced over time. no effect of feeder location was found in colony activity levels or in pollen load size. a foraging trade-off between sugar solution a ... | 2012 | 22420252 |