Magnetic Force Microscopy of the Ethmoid Bones of Migratory and Non-Migratory Fishes

S. Gorobetsa, O. Gorobetsa, M. Bulaievskaa and I. Sharaub aIgor Sikorsky Kyiv Polytechnic Institute, 03056 Kyiv, Ukraine bInstitute of Magnetism NAS of Ukraine and MESYS of Ukraine, 03142 Kyiv, Ukraine

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For a long time it was believed that the biogenic magnetic nanoparticles (BMNs) in the ethmoid bones of fishes and birds are associated with navigation in the geomagnetic field. However, it was proven that BMNs don't affect the ability of migratory birds to orient in the Earth's magnetic field. It is relevant to check the presence of BMNs in organs of migratory and non-migratory fishes. The presence of BMNs was investigated in the samples of ethmoid bones of atlantic salmon, northern pike and silver carp by the method of magnetic force microscopy. As a result, the biological material of ethmoid bones of migratory and non-migratory fishes contain both separate BMNs and their chains, so BMNs in the ethmoid bone of fishes are not related to their ability to migrate in the geomagnetic field.

DOI: 10.12693/APhysPolA.133.734 PACS numbers: 81.05.-t