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Polarized light perception and orientation by yearling sockeye salmon (Oncorhynchus nerka)

University of British Columbia

Conditioning experiments demonstrated a significant, repeatable and reversable capacity for groups of yearling sockeye salmon (Oncorhvnchus nerka) to discriminate between perpendicular planes of linearly polarized light. Polarized light was also shown to influence orientation behavior when compared with orientation under unpolarized light. A limited number of fish orientated at a common angle (between 22.5 and 45 to the right of) with respect to the plane of polarization. Possible analysers of polarized light are discussed.

Text

2011-10-14

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http://hdl.handle.net/2429/38013

Zoology

University of British Columbia

Graduate