Metal at hatcheries confuses migratory fish

June 4, 2014 9:08 PM

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Metal building materials used in most fish hatcheries have a negative effect on the species the facilities are designed to help.

Iron rebar and steel pipes interfere with the magnetic field around young steelhead trout, confusing their map sense critical to migration, according to a study by Oregon State University researchers published this week in the journal Biology Letters.

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