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Related Experiment Videos

Cuttlefish use polarization sensitivity in predation on silvery fish.

N Shashar1, R Hagan, J G Boal

  • 1Marine Resources Center, Marine Biological Laboratory, Woods Hole, MA 02543, USA.

Vision Research
|April 18, 2000
PubMed
Summary

Cuttlefish (Sepia officinalis) prefer to prey on fish that reflect polarized light. This suggests cuttlefish use their polarization vision to detect prey and overcome camouflage.

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Area of Science:

  • Marine biology
  • Animal behavior
  • Sensory ecology

Background:

  • Cephalopods, including cuttlefish, possess sensitivity to light's linear polarization.
  • Polarization vision is a sensory modality found across the animal kingdom, but its ecological roles are still being uncovered.

Purpose of the Study:

  • To investigate the role of polarization sensitivity in the predatory behavior of the cuttlefish, Sepia officinalis.
  • To determine if cuttlefish prey preference is influenced by the polarization reflection of their prey.

Main Methods:

  • Cuttlefish were presented with two types of prey: fish with normal polarization reflection and fish with significantly reduced polarization reflection.
  • Prey selection by Sepia officinalis was recorded and statistically analyzed.

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Main Results:

  • Cuttlefish demonstrated a significant preference for preying on fish with normal polarization reflection compared to those with reduced polarization reflection (n = 24, chi 2 = 17.3, P < 0.0001).

Conclusions:

  • The findings imply that cuttlefish utilize their polarization sensitivity during predation.
  • Polarization vision may be a key mechanism for cuttlefish to detect and capture prey, potentially by disrupting the countershading camouflage of silvery fish.