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Predator-Prey Interactions

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Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.Although predation is commonly associated with carnivory, for...

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Related Experiment Video

Updated: Jun 4, 2026

A Real-Time Interactive System for Studying Confrontational Pursuit Behavior in Rodents

A Real-Time Interactive System for Studying Confrontational Pursuit Behavior in Rodents

Published on: May 16, 2025

Active touch during shrew prey capture.

Martin Munz¹, Michael Brecht, Jason Wolfe

¹Bernstein Center for Computational Neuroscience, Humboldt University of Berlin Berlin, Germany.

Frontiers in Behavioral Neuroscience

|February 2, 2011

Summary

This summary is machine-generated.

Etruscan shrews use rapid, high-frequency whisker movements for hunting. Their specialized rostrum bends during the final strike, enabling precise prey capture with minimal reaction time.

Keywords:

Etruscan shrew active touch barrel cortex prey capture whisker

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Last Updated: Jun 4, 2026

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Area of Science:

Neuroscience
Behavioral Biology
Mammalian Sensory Systems

Background:

Somatosensation via whiskers is crucial for many mammals, yet whisker usage patterns during natural behaviors remain understudied.
The Etruscan shrew, a small mammal, heavily relies on its vibrissae (whiskers) for detecting and capturing fast-moving insect prey.

Purpose of the Study:

To investigate whisker kinematics and body motion patterns in Etruscan shrews during natural prey capture.
To compare whisking parameters between Etruscan shrews and rats.

Main Methods:

High-speed video tracking of whisker and body movements during shrew prey capture.
Analysis of whisking frequency, amplitude, and protraction/retraction velocities.
Identification of distinct behavioral phases during the hunting sequence.

Main Results:

Etruscan shrews exhibit whisking frequencies between 12-17 Hz, characterized by smaller amplitude and higher frequency compared to rats.
Four distinct hunting phases were identified: immobile, search, contact, and attack.
Prey capture involves rapid head movements, high accelerations, and corrective maneuvers with latencies under 30 ms.
Shrews bend their rostrum into a "parrot beak" shape during the final strike to grip prey.

Conclusions:

Etruscan shrew whisking is adapted for high-speed prey detection and capture.
The specialized rostrum morphology and rapid motor control facilitate efficient hunting strategies in this species.
Comparative analysis reveals both conserved and divergent whisking strategies across rodent species.