Intraspecific size shifts in generalist bumblebees and flowers lead to low functional consequences

Abstract Body size is a trait that can affect plant–pollinator interaction efficiency and plant reproductive success. We explored the impact of intraspecific shifts on interactions between pollinators flowering plants under controlled conditions. considered two development conditions leading to production large small individual flowers Borago officinalis Echium plantagineum . also used natural variability worker within bumblebee colonies isolate workers. performed fully crossed experiment with flower sizes each species Our results show both partners did not bee foraging behavior in most evaluated parameters were equally efficient depositing pollen. Significant differences found only pollen deposition across life B. , greatest quantity deposited by bees. find relationship pollinator fitness. suggest generalist may be resilient future potential mismatches but remain tested if they are still new environmental resulting from global changes.