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Behavioral Tracking and Neuromast Imaging of Mexican Cavefish
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Evolution of acoustic communication in blind cavefish
Carole Hyacinthe1, Joël Attia2, Sylvie Rétaux3
1Paris-Saclay Institute of Neuroscience, CNRS UMR9197, Université Paris-Saclay, Gif-sur-Yvette, France.
Nature Communications
|September 19, 2019
Summary
The blind cavefish and sighted surface fish (Astyanax mexicanus) use distinct sounds for communication. Sound production and reactions evolved differently in these morphs, showing adaptation in acoustic communication.
Area of Science:
- Evolutionary Biology
- Animal Behavior
- Bioacoustics
Background:
- The blind cavefish and sighted surface fish (Astyanax mexicanus) evolved in distinct environments.
- Cavefish adaptation involves significant morphological, physiological, and behavioral changes.
Purpose of the Study:
- To investigate acoustic communication in Astyanax mexicanus.
- To determine if sound production varies between cave and surface morphs and their contexts.
- To analyze the evolution of acoustic communication in cavefish.
Main Methods:
- Observing sound production in laboratory and wild Astyanax mexicanus populations.
- Characterizing the
Main Results:
- Astyanax mexicanus is a sonic species, producing sounds in both laboratory and wild settings.
- Sound production is context-dependent and differs between cave and surface morphs.
- The
Conclusions:
- Acoustic communication exists and has evolved in cavefish.
- The evolution of acoustic communication is linked to behavioral changes in Astyanax mexicanus.
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