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Published on: April 14, 2021
Hearing ability in three clownfish species.
Eric Parmentier1, Orphal Colleye, David Mann
1Laboratoire de Morphologie Fonctionnelle et Evolutive, Institut de Chimie, Bât. B6C, Université de Liège, B-4000 Liège, Belgium. E.Parmentier@ulg.ac.be
The Journal of Experimental Biology
|June 16, 2009
Summary
Clownfish use sound frequency to communicate social status, with dominant frequencies correlating to fish size. Their hearing sensitivity is tuned to these biologically relevant sounds for social organization.
Area of Science:
- Marine Biology
- Bioacoustics
- Animal Behavior
Background:
- Clownfish exhibit size-based dominance hierarchies within social groups.
- Sound characteristics, like dominant frequency, correlate with fish size, suggesting a role in social signaling.
Purpose of the Study:
- To determine the hearing sensitivity of three anemonefish species.
- To compare hearing abilities with the dominant frequencies of their vocalizations.
- To understand the role of auditory perception in clownfish social organization.
Main Methods:
- Measuring hearing sensitivity across a frequency range for three anemonefish species.
- Analyzing the dominant frequencies and pulse lengths of clownfish sounds.
- Correlating sound parameters with fish size and comparing them to hearing thresholds.
Main Results:
- Anemonefish hearing sensitivity ranges from 75 to 1800 Hz, with peak sensitivity below 200 Hz.
- Dominant sound frequency strongly correlates with fish size (R=0.95), ranging from 370 to 900 Hz for 55-130 mm fish.
- Juvenile clownfish hearing sensitivity is lower than their own call frequencies but overlaps with larger fish calls.
Conclusions:
- Clownfish possess the auditory capabilities to detect biologically relevant frequencies in conspecific sounds.
- Auditory perception likely plays a crucial role in maintaining social structure and size-based dominance.
- The hearing sensitivity of juveniles may facilitate the localization of adults for social integration and survival.
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