Magnetoreception and magnetic navigation in fishes: a half century of discovery

Abstract

Overview

Fishes represent the largest and most diverse vertebrate group, equipped with impressive sensory capabilities for navigating their aquatic environments.

Findings

• The capability to detect Earth's magnetic field, known as magnetoreception, is widespread among fish species.
• Recent studies, especially on salmonids, demonstrate that fishes use Earth's magnetic field not just for directional guidance but also as a geographical map, aiding in transoceanic migrations and returning to natal locations.

Despite notable progress in the field, the exact mechanisms through which fishes detect magnetic fields and the evolutionary origins of vertebrate magnetoreception remain largely mysterious.

Conclusion

Continued research, considering a broader spectrum of fish species, is crucial for a deeper understanding of magnetoreception. The diverse life-history traits and environments of fish make them ideal subjects for future studies.