Variation in the natural frequency of stamens in six morphologically diverse, buzz-pollinated, heterantherous Solanum taxa and its relationship to bee vibrations
| Autor: | Lucy Nevard, Mario Vallejo-Marín, Carlos Eduardo Pereira Nunes, Fernando Montealegre-Z |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Buzz pollination Stamen Plant Science Solanum citrullifolium buzz pollination 010603 evolutionary biology 01 natural sciences biomechanics 03 medical and health sciences Bombus terrestris Botany Solanum rostratum Solanaceae Ecology Evolution Behavior and Systematics flower diversity Marketing buzz biology nightshade biology.organism_classification 030104 developmental biology Taxon buffalo-bur resonance Solanum |
| Zdroj: | Botanical Journal of the Linnean Society. 197:541-553 |
| ISSN: | 1095-8339 0024-4074 |
| DOI: | 10.1093/botlinnean/boab044 |
| Popis: | During buzz pollination, bees use vibrations to remove pollen from flowers. Vibrations at the natural frequency of pollen-carrying stamens are amplified through resonance, resulting in higher amplitude vibrations. Because pollen release depends on vibration amplitude, bees could increase pollen removal by vibrating at the natural frequency of stamens. However, few studies have characterized the natural frequencies of stamens and compared them to the frequencies of buzz-pollinating bees. We use laser Doppler vibrometry to characterize natural frequencies of stamens of six morphologically diverse, buzz-pollinated, heterantherous Solanum taxa and compare the frequency of bumblebee buzzes produced on two Solanum spp. with different natural frequencies. We found that stamen morphology and plant identity explain variation in their natural frequency. The natural frequencies of the stamens in the studied Solanum taxa fell between 45 and 295 Hz; in five out of six taxa the frequencies were < 190 Hz, which only partly overlaps floral vibrations of buzz-pollinating bees. We show that captive bumblebees produce vibrations at a frequency of 345 Hz and do not change their floral vibrations to match the natural frequency of the visited flowers. Our results suggest that pollen release induced by vibrating stamens at their natural frequencies might only play a role in a subset of buzz pollination interactions. |
| Databáze: | OpenAIRE |
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