Schwind, R. (1999) Daphnia pulex swims towards the most strongly polarized light - A response that leads to 'shore flight'. JOURNAL OF EXPERIMENTAL BIOLOGY, 202 (24). pp. 3631-3635. ISSN 0022-0949,
Full text not available from this repository.Abstract
When Daphnia pulex are presented on one side of their visual field with diffuse, large-area linearly polarized light with a horizontal e-vector and on the other side of their visual field with large-area polarized light with a lower degree of polarization, they swim towards the place with the higher degree of polarization. The response is intensity-invariant: Daphnia pulex swim towards the place of maximal polarization regardless of which side of their visual field has the higher intensity of light. As a result of Rayleigh scattering in a pond, the light surrounding the Daphnia is polarized and has a horizontal e-vector, Near the shore, polarization is not homogeneous. The light seen in the direction of the open water has a higher degree of polarization than that seen in the direction towards the shore. Therefore, in a pond, swimming towards the place with the highest degree of polarization leads the Daphnia away from the shore. For Daphnia, this response explains a mechanism that underlies the well-known phenomenon of 'shore flight', the active departure of small pelagic crustaceans from shore zones.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | WATER; polarization vision; Daphnia pulex; shore flight; eye movement; vision |
| Subjects: | 500 Science > 590 Zoological sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Zoologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Dec 2022 11:43 |
| Last Modified: | 06 Dec 2022 11:43 |
| URI: | https://pred.uni-regensburg.de/id/eprint/48793 |
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