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Fish can use hydrostatic pressure to determine their absolute depth

Abstract:
Hydrostatic pressure is a global cue that varies linearly with depth which could provide crucial spatial information for fish navigating vertically; however, whether fish can determine their depth using hydrostatic pressure has remained unknown. Here we show that Mexican tetras (Astyanax mexicanus) can learn the depth of a food site and consistently return to it with high fidelity using only hydrostatic pressure as a cue. Further, fish shifted their search location vertically as predicted if using pressure alone to signal depth. This study uncovers new sensory information available to fish which allows them to resolve their absolute depth on a fine scale.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1038/s42003-021-02749-z

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Zoology
Oxford college:
St John's College
Role:
Author


Publisher:
Springer Nature
Journal:
Communications Biology More from this journal
Volume:
4
Article number:
1208
Publication date:
2021-10-21
Acceptance date:
2021-09-27
DOI:
EISSN:
2399-3642


Language:
English
Keywords:
Pubs id:
1194073
Local pid:
pubs:1194073
Deposit date:
2021-09-13

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