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Parasitic Nematodes Use Static Electricity to Latch Onto Flying Insects, PNAS Study Finds

High-speed experiments with charged fruit flies show attachment success rises sharply with insect voltage.

Overview

  • Researchers wired tethered fruit flies to controlled high-voltage supplies and filmed nematode jumps with high-speed cameras to isolate electrostatic effects.
  • Attachment probability was under 10% near 100 volts but climbed to roughly 70–80% at about 700–800 volts in lab tests and simulations.
  • Wind‑tunnel trials and computational models indicated a gentle breeze can keep worms aloft long enough for electrostatic attraction to pull them to the host.
  • The nematodes leap up to about 25 times their body length, with electrostatic forces reducing the need for precise aim during jumps.
  • Authors and outside experts place the work within a growing electrostatic ecology, alongside findings in bees, spiderwebs, and ticks.