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date: 30 November 2021

Abstract and Keywords

Exploiting invertebrates, such as the fruit fly Drosophila or nematode Caenorhabditis, with a modifiable genome seems to be key to answering the fundamental question of the molecular principle of magnetoreception. This review presents the state of knowledge on invertebrate sensitivity to geomagnetic field (GMF) over the last 20 years from a number of viewpoints, with particular emphasis on the behavioral aspect of testing. It shows that experimental approaches are generally specific to the particular research teams, and positive replication at other laboratories is practically nonexistent. The questions surrounding an animal compass are fascinating, but to achieve a level of knowledge of the magnetic sense at least closer to the other senses, a standardized, commercially available, and routinely applicable test on the classic invertebrate model to the natural GMF is still badly needed.

Keywords: magnetoreception, invertebrates, insects, mechanisms, orientation, compass, light, cryptochrome, magnetite

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