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First evidence of fish larvae producing sounds
Erica Staaterman1, Claire B Paris2, Andrew S Kough3
1Applied Marine Physics, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL 33149-1098, USA Marine Biology and Fisheries, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL 33149-1098, USA.
Biology Letters
|October 3, 2014
Summary
Grey snapper (Lutjanus griseus) larvae produce sounds similar to adults, marking the first acoustic recordings of fish larvae. These nocturnal sounds may help larvae stay together in dark conditions.
Area of Science:
- Marine Biology
- Bioacoustics
- Ichthyology
Background:
- Acoustic ecology studies in marine fish have historically concentrated on adult populations.
- The sound production and acoustic behavior of early life-history stages, such as larvae, remain largely unexplored.
Purpose of the Study:
- To document the acoustic activity of pre-settlement stage grey snapper (Lutjanus griseus) larvae for the first time.
- To characterize the sounds produced by grey snapper larvae and compare them to adult vocalizations.
Main Methods:
- Conducted in situ and laboratory recordings of grey snapper larvae.
- Analyzed acoustic properties (spectral and temporal) of larval sounds.
- Compared larval sound characteristics with known adult sounds.
Main Results:
- Successfully recorded acoustic emissions from pre-settlement grey snapper larvae.
- Identified 'knock' and 'growl' sounds produced by larvae during nighttime hours.
- Observed spectral and temporal similarities between larval and adult grey snapper sounds.
Conclusions:
- Grey snapper larvae are acoustically active, producing sounds previously undocumented in this life stage.
- Larval sound production may play a role in social behavior, potentially aiding group cohesion in low-visibility conditions.
- Further research is needed to elucidate the precise functions and physiological mechanisms of sound production in fish larvae.
