Experimental evidence for geomagnetic orientation in juvenile salmon, Oncorhynchus tschawytscha Walbaum
Article first published online: 24 JAN 2006
DOI: 10.1111/j.1095-8649.1986.tb05196.x
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How to Cite
Taylor, P. B. (1986), Experimental evidence for geomagnetic orientation in juvenile salmon, Oncorhynchus tschawytscha Walbaum. Journal of Fish Biology, 28: 607–623. doi: 10.1111/j.1095-8649.1986.tb05196.x
Publication History
- Issue published online: 24 JAN 2006
- Article first published online: 24 JAN 2006
- (Received 25 March 1985, Accepted 25 October 1985)
- Abstract
- References
- Cited By
Juvenile chinook salmon, Oncorhynchus tschawytscha, kept under artificial light in a rectangular holding tank aligned east/west for 18 months, showed a preferred temporal and directional orientation of 270° with respect to water flow and the source of food.
Individual fish transferred from the holding/training tank to an unfamiliar circular test arena in another room devoid of local directional cues showed a mean of means preferred unimodal orientation of 264°.
Controlled re-introduction of individual stimuli revealed a hierarchy of orientation cues; one of these was a response to magnetism. A 90° clockwise shift in the horizontal component of the earth's magnetic field was followed by a significant change in the mean of means axial orientation, for the fish under test, from 258°/78° to 354°/174°. After restoration of the normal magnetic field the mean of means axial orientation reverted to 274°/94°.

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