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Related Experiment Videos

Timing of praying mantis evasive responses during simulated bat attack sequences.

Jeffrey D Triblehorn1, David D Yager

  • 1Department of Psychology, University of Maryland, College Park, MD 20742, USA. biojdt@langate.gsu.edu

The Journal of Experimental Biology
|May 10, 2005
PubMed
Summary

Praying mantids use bat echolocation patterns to time evasive dives. A gradual increase in pulse repetition rates (PRRs) allows mantids to escape, while rapid increases may bypass their auditory defense.

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Area of Science:

  • Behavioral Ecology
  • Bioacoustics
  • Predator-Prey Interactions

Background:

  • Praying mantids exhibit evasive behaviors influenced by bat predator threat levels.
  • Bat echolocation patterns may provide critical cues for mantid response timing.

Purpose of the Study:

  • To determine the timing of mantid evasive maneuvers within simulated bat attack sequences.
  • To identify key parameters in bat echolocation that trigger mantid escape responses.

Main Methods:

  • Simulated bat attack echolocation sequences using pulse trains.
  • Analysis of mantid evasive power dive timing relative to echolocation sequence transitions.
  • Prediction modeling of echolocation parameters eliciting mantid responses.

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Main Results:

  • Mantid evasive responses occurred earlier in attack sequences with gradual increases in pulse repetition rates (PRRs).
  • Responses were consistently triggered when PRRs reached 20-40 pulses s(-1), regardless of transition speed.
  • Rapid PRR increases in bat echolocation may circumvent mantid auditory defenses.

Conclusions:

  • Gradual increases in bat echolocation PRR can alert mantids, facilitating escape.
  • Rapid PRR shifts may represent an advantage for bats in capturing prey.
  • Insects may benefit from secondary defense mechanisms against bats employing rapid echolocation changes.