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Related Experiment Video

Updated: Jun 21, 2026

Electroantennography-based Bio-hybrid Odor-detecting Drone using Silkmoth Antennae for Odor Source Localization

Electroantennography-based Bio-hybrid Odor-detecting Drone using Silkmoth Antennae for Odor Source Localization

Published on: August 27, 2021

Tiger moth jams bat sonar.

Aaron J Corcoran¹, Jesse R Barber, William E Conner

¹Department of Biology, Wake Forest University, Winston-Salem, NC 27106, USA. corcaj8@wfu.edu

Science (New York, N.Y.)

|July 18, 2009

Summary

This summary is machine-generated.

Tiger moths jam bat sonar with ultrasonic clicks, a defense against predatory bats. This discovery reveals a new anti-bat strategy in the ongoing evolutionary battle between insects and bats.

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Last Updated: Jun 21, 2026

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Flying Insect Detection and Classification with Inexpensive Sensors

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Published on: October 15, 2014

Area of Science:

Bioacoustics
Animal Behavior
Evolutionary Biology

Background:

Bats use sonar for hunting, posing a threat to insects.
Some tiger moths produce ultrasonic clicks to deter bats.
Previous research suggested these clicks alert bats to toxicity or startle them, but sonar jamming evidence was inconclusive.

Purpose of the Study:

To investigate if tiger moth clicks jam bat sonar.
To understand the defensive mechanisms of palatable tiger moths against bats.

Main Methods:

Utilized ultrasonic recording to capture moth and bat sounds.
Employed high-speed infrared videography to observe bat-moth interactions.
Analyzed acoustic and behavioral data from controlled experiments.

Main Results:

Demonstrated that the palatable tiger moth Bertholdia trigona jams the sonar of attacking big brown bats (Eptesicus fuscus).
Ultrasonic clicks produced by B. trigona effectively interfere with bat echolocation.
This jamming behavior was observed in real-time bat-moth encounters.

Conclusions:

Sonar jamming is a confirmed defensive strategy for prey against bats.
This finding expands the known repertoire of anti-predator adaptations in insects.
It highlights the complex evolutionary arms race between bats and their insect prey.