Electric field detection as floral cue in hoverfly pollination

Abstract

Overview

This study investigates an underappreciated aspect of pollination—hoverflies' ability to detect electric fields surrounding flowers. Hoverflies, specifically Eristalis tenax and Cheilosia albipila, serve as focal points for this inquiry into ecological and biological electromagnetism.

Findings

• Hoverflies sense electrical cues, which may be associated with their ability to identify nectar-rich flowers.
• Rapid shifts in the electric fields of flowers correlate with nectar offerings, enhancing hoverfly revisits.
• Thoracic hair structures in hoverflies contribute to their body charge polarity, aiding in their electro-mechanosensory capabilities.
• While electrophysiological studies did not show neural reactions to electric fields in antennae, thoracic hairs act as key electroreceptive structures.

Conclusion

The findings underscore the intricate and previously unrecognized role of electric fields in hoverfly pollination. Notably, these interactions contribute significantly to ecological dynamics, highlighting potential EMF impacts on pollinators’ behavior and health.