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Error-prone signalling.

R A Johnstone¹, A Grafen

¹Department of Plant Sciences, Oxford, U.K.

Proceedings. Biological Sciences

|June 22, 1992

Summary

This summary is machine-generated.

Biological communication models incorporating perceptual error show that signalling systems remain honest. This research validates Zahavi's handicap principle, even with inevitable errors in real-world signalling.

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Area of Science:

Evolutionary biology
Animal communication
Game theory

Background:

Zahavi's handicap principle is crucial for understanding biological communication.
Existing models assume error-free communication, which is unrealistic for natural systems.

Purpose of the Study:

To develop a more realistic model of the handicap principle that includes perceptual error.
To determine if perceptual error invalidates the handicap principle in biological signalling.

Main Methods:

Developed a general evolutionarily stable strategy (ESS) model.
Incorporated perceptual error into the handicap principle model.
Analyzed the impact of various error functions on signalling honesty.

Main Results:

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Error-prone signalling systems are shown to be honest at equilibrium.
Perceptual error does not invalidate the handicap principle.
The model accommodates features of real signalling systems like amplifiers and attenuators.

Conclusions:

The handicap principle remains valid even in the presence of perceptual error.
This model enhances realism in biological signalling theory.
Opens avenues for studying concurrent displays and direct perception of quality.