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Related Concept Videos

Fixed Action Patterns01:06

Fixed Action Patterns

A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
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Related Experiment Video

Updated: May 23, 2026

The Identification of Sea Lamprey Pheromones Using Bioassay-Guided Fractionation
09:35

The Identification of Sea Lamprey Pheromones Using Bioassay-Guided Fractionation

Published on: July 17, 2018

Pheromones: fish fear factor.

Marcus C Stensmyr1, Florian Maderspacher

  • 1Max Planck Institute for Chemical Ecology in Jena, Germany. mstensmyr@ice.mpg.de

Current Biology : CB
|March 24, 2012
PubMed
Summary
This summary is machine-generated.

When fish witness injury, they exhibit panic. Researchers have now identified the specific chemical compound responsible for triggering this alarm response in fish.

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Area of Science:

  • Ethology
  • Neuroscience
  • Biochemistry

Background:

  • Animals, including fish, display social alarm responses to injury.
  • The specific chemical signals mediating these responses are often unknown.

Purpose of the Study:

  • To identify the chemical substance that triggers panic in fish upon witnessing injury.
  • To elucidate the biochemical basis of social alarm signaling in fish.

Main Methods:

  • Analysis of alarm substances released from injured fish.
  • Behavioral assays to test the effect of isolated compounds on naive fish.

Main Results:

  • A specific fatty acid derivative was identified as the key alarm pheromone.
  • This compound elicits a strong panic response in fish at low concentrations.

Conclusions:

  • The identified compound is crucial for mediating social alarm behavior in fish.
  • Understanding these chemical signals can advance research in animal behavior and neurobiology.