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Atlantic salmon use magnetic fields to navigate, even when landlocked

Atlantic salmon use magnetic fields to navigate, even when landlocked

Science
Oct. 8 (UPI) -- Even when landlocked for several generations, Atlantic salmon can sense magnetic fields and use them to navigate, according to new research. Previous studies have documented Pacific salmon's ability to sense magnetic fields. To test whether Atlantic salmon also use Earth's magnetic field to navigate, scientists designed a series of fish pins, each with differently oriented magnetic fields. Researchers replicated the Earth's magnetic field using copper-coated wooden coils. The experimental fish pins were installed in Oregon's Hosmer Lake, where Atlantic salmon, originally transplanted from Maine, have been living living for 60 years. Scientists observed the behavior of 1,150 juvenile Atlantic salmon inside the pins. "We wanted to see how Atlantic salmon would respond if we...