Does native status and body size of bees influence pollenremoval from Solanum rostratum during buzz pollination?
2025 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE credits
Student thesis
Abstract [en]
Buzz pollination is a relatively specialized pollination system where a bee creates highfrequency vibrations that forces pollen out of the flower’s anthers. The vibration that iscreated is described by frequency, amplitude and duration, and the type of vibrations producedvary widely among bee species and are partly determined by bee size. To date, it is unclearwhether plant species require vibrations from specific bee species to optimally release pollen.This thesis investigates whether origin of the bee (native vs. non-native relative to the plant’sorigin) and bee size affects the amount of pollen extracted when buzz pollinating Solanumrostratum (Solanaceae). To do this, we recreated buzzes of different bee species that either cooccur with S. rostratum (native pollinators) or not (non-native pollinators) and applied themto flowers to stimulate pollen release. Vibrations representative of 14 bee species were appliedto an individual flower using a mechanical shaker. Released pollen was collected and countedusing an electronic particle counter. Our results show that the body size of the bee correlatedpositively with pollen removed, but the origin of the bee (native vs non-native) is not relatedto pollen release. Our results suggest that bees with a larger body size can extract more pollenfrom S. rostratum, which is likely related to their general ability to vibrate with a higheramplitude than bees with a smaller body size. The lack of an association between the origin ofthe bee and pollen release suggests that bees of similar size might release the same amount ofpollen regardless of whether they co-occur with the plant (native) or not (not native), all elseequal. I argue that buzz pollination although functionally specialized, allows plants toestablish in new areas and still be successful in pollination regardless of the taxonomicidentity of the new floral visitors.
Place, publisher, year, edition, pages
2025. , p. 18
Keywords [en]
Buzz pollination, bee, solanum rostratum, pollen, solanaceae
National Category
Ecology
Identifiers
URN: urn:nbn:se:uu:diva-551477OAI: oai:DiVA.org:uu-551477DiVA, id: diva2:1939904
Educational program
Bachelor Programme in Biology / Molecular Biology
Presentation
2025-01-22, Norbyvägen 16, 752 36, Uppsala, 08:45 (Swedish)
Supervisors
2025-02-262025-02-242025-02-26Bibliographically approved