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Electrosensitivity in planthoppers (Insecta: Hemiptera: Auchenorrhyncha: Fulgoromorpha).

Peter Bräunig1, Hannelore Hoch2,3, Werner Baumgartner4

  • 1Institute Biology II, RWTH Aachen University, Worringerweg 3, 52056, Aachen, Germany. braeunig@bio2.rwth-aachen.de.

Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
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Summary
This summary is machine-generated.

Planthopper nymphs possess sensory pits that detect environmental electric fields. These specialized organs, crucial for insect communication and navigation, respond to low-intensity electric fields, confirming electroreception in planthoppers.

Keywords:
Electric fieldsFulgoromorphaInsectSensory physiologySensory pits

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Area of Science:

  • Zoology
  • Sensory Biology
  • Insect Physiology

Background:

  • Planthopper nymphs (suborder Fulgoromorpha) have unique sensory structures called sensory pits on their cuticle.
  • Previous research suggested potential sensory functions for these structures, but direct evidence was lacking.

Purpose of the Study:

  • To investigate the sensory capabilities of planthopper nymphs' sensory pits.
  • To determine if these organs respond to various environmental stimuli, including electric fields.

Main Methods:

  • Extracellular recordings were performed on the sensory pits of planthopper nymphs.
  • Stimulation included sound, ultrasound, mechanical pressure, temperature changes, magnetic fields, and electric fields of varying intensities.

Main Results:

  • Sensory pits showed no response to sound, ultrasound, mechanical stimulation, temperature, or magnetic fields.
  • Significant responses were elicited by very low-intensity electric fields (less than 1 kV/m).
  • These findings suggest that sensory pits function as electroreceptors.

Conclusions:

  • Planthopper nymphs can perceive environmental electric fields using their sensory pits.
  • This electroreception capability is corroborated by findings in treehoppers (Membracidae).
  • The study provides direct electrophysiological evidence supporting electric field perception in planthoppers and treehoppers, highlighting its ecological significance.