Study
Polarization vision
Wehner, Rüdiger; Labhart, Thomas
Invertebrate Vision (Cambridge University Press), 2006
A book chapter drawing together the anatomy of the dorsal rim region, the electrophysiology of polarisation-sensitive receptors, and the field experiments in which desert ants and bees were tested under filters that rotated or removed the polarisation pattern of the sky.
- Studied in
- Cataglyphis, Apis mellifera, Insecta
- Sample size
- review chapter synthesising field and electrophysiological work across insect groups
Insects using a sky compass read the polarisation pattern through a specialised dorsal rim region whose receptors are arranged at different angles, and shift their heading by the angle a filter is rotated over them.
What it means
The authors' reading, and ours. Where they differ, that difference is the point.
How the authors put it
Polarisation vision in insects is a dedicated sensory channel with its own receptors, its own region of the eye and its own use — celestial orientation — rather than a variant of ordinary vision.
How NatureHQ reads it
Cited as the synthesis rather than as a single experiment, which is what it is. The filter-rotation result it describes is the strongest demonstration that an animal steers by a property of light humans cannot see: rotate the plane of polarisation over an ant and it turns by the same angle, which is only explicable if it is reading that plane.
- A review chapter: the experiments it describes are reported in full elsewhere, and the numbers here are second-hand by design.
- The field work it draws on is dominated by one genus adapted to a habitat with almost no landmarks, which is part of why the sky compass is so dominant in it.
- A book chapter carries no DOI, so its identifiers cannot be machine-verified the way a journal article’s can.
Rotating the sky above an ant and watching it turn
Desert ants run home in a straight line across ground with no landmarks at all. What are they steering by?
What this study is used for on NatureHQ
One study can inform several subjects. Here is everywhere this one is cited.
Published by: Academic book publishersPublished as an academic monograph.
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