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Rearing in a distorted magnetic field disrupts the ‘map sense’ of juvenile steelhead trout Public Deposited

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https://ir.library.oregonstate.edu/concern/articles/7d278v739

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  • We used simulated magnetic displacements to test orientation preferences of juvenile steelhead trout (Oncorhynchus mykiss) exposed to magnetic fields existing at the northernmost and southernmost boundaries of their oceanic range. Fish reared in natural magnetic conditions distinguished between these two fields by orienting in opposite directions, with headings that would lead fish towards marine foraging grounds. However, fish reared in a spatially distorted magnetic field failed to distinguish between the experimental fields and were randomly oriented. The non-uniform field in which fish were reared is probably typical of fields that many hatchery fish encounter due to magnetic distortions associated with the infrastructure of aquaculture. Given that the reduced navigational abilities we observed could negatively influence marine survival, homing ability and hatchery efficiency, we recommend further study on the implications of rearing salmonids in unnatural magnetic fields.
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  • Putman, N. F., Meinke, A. M., & Noakes, D. L. G. (2014). Rearing in a distorted magnetic field disrupts the ‘map sense’ of juvenile steelhead trout. Biology Letters, 10(6), 20140169. doi:10.1098/rsbl.2014.0169
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  • 10
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  • 6
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  • Financial support of this study was provided by Oregon Sea Grant and the Oregon Department of Fish and Wildlife.
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  • description.provenance : Made available in DSpace on 2014-10-24T15:59:55Z (GMT). No. of bitstreams: 2 PutmanNathanFisheriesWildlifeRearingDistortedMagnetic.pdf: 751622 bytes, checksum: 8dc9b8b4208723e571d37e79e2a9732f (MD5) PutmanNathanFisheriesWildlifeRearingDistortedMagnetic_DataSupplement.xlsx: 13387 bytes, checksum: 98722fd6fcc9c7ad35449d2e04e7fcd3 (MD5) Previous issue date: 2014-06
  • description.provenance : Submitted by Erin Clark (erin.clark@oregonstate.edu) on 2014-10-24T15:59:35Z No. of bitstreams: 2 PutmanNathanFisheriesWildlifeRearingDistortedMagnetic.pdf: 751622 bytes, checksum: 8dc9b8b4208723e571d37e79e2a9732f (MD5) PutmanNathanFisheriesWildlifeRearingDistortedMagnetic_DataSupplement.xlsx: 13387 bytes, checksum: 98722fd6fcc9c7ad35449d2e04e7fcd3 (MD5)
  • description.provenance : Approved for entry into archive by Erin Clark(erin.clark@oregonstate.edu) on 2014-10-24T15:59:55Z (GMT) No. of bitstreams: 2 PutmanNathanFisheriesWildlifeRearingDistortedMagnetic.pdf: 751622 bytes, checksum: 8dc9b8b4208723e571d37e79e2a9732f (MD5) PutmanNathanFisheriesWildlifeRearingDistortedMagnetic_DataSupplement.xlsx: 13387 bytes, checksum: 98722fd6fcc9c7ad35449d2e04e7fcd3 (MD5)

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