Scientific discovery fish contains a magnet - Ningbo future strong magnet material co.,ltd

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Scientific discovery fish contains a magnet

Swim in the sea for three years, 300 kilometers away from home, rainbow trout can still went all the way back to its initial incubation. Normally, cruising along with rainbow trout streams, and rarely appear the wrong direction.

This extraordinary feat is likely to depend on some feeling, fish has excellent vision and sense of smell. Rainbow trout, however, seems to depend more on the earth's magnetic field to guide the right direction to them. Now, Ludwig Maximilian - Munich university research team, led by earth scientists, Michael Winklhofer isolated magnetic field of the fish body cells. This development could help researchers to further realize, including birds, all kinds of biological magnetic field.

Previous studies showed that many species of migratory birds and fish can detect different magnetic field strength. Scientists believe that this kind of ability is the key to magnetite (for all mineral magnetism in the strongest), they found that the magnet is embedded in the organization of some birds and fish. But scientists have not been able to isolate a single cells containing magnetic particles.

Because these cells rarely magnetic field, and each other far away, if they get together, may affect each other magnetic, so it is difficult to separate. , the researchers said if a tissue is contained in the magnetic field, the magnetic field cell proportion is likely to be less than one over ten thousand.

Fields to be separate cells, Winklhofer and his colleagues placed suspension of rainbow trout cells under a microscope, the microscope also device on the magnet. Researchers think that in this way, all contain magnetic cells will slowly revolve around the magnet. In this way, the researchers from the nose off the magnetic field with the cells of rainbow trout. In each of rainbow trout smell in the organization, they found that there are 1 to 4 cells in turning around a rotating magnetic field. And, in each cell, magnetic particles close to the cell membrane.

The results of the study, published online in the proceedings of the national academy of sciences, research report, every cell of the magnetic force one hundred times more than the researchers expected. This suggests that fish have the ability to detect not only the basic direction, and the perception of magnetic field intensity can provide more precise latitude and longitude information to them.

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