|Title||The underwater acoustic activities of the red swamp crayfish Procambarus clarkii|
|Publication Type||Articolo su Rivista peer-reviewed|
|Year of Publication||2012|
|Authors||Buscaino, G., Filiciotto F., Buffa G., Di Stefano V., Maccarrone V., Buscaino C., Mazzola S., Alonge G., and D'Angelo S.|
|Journal||Journal of the Acoustical Society of America|
|Keywords||Acoustic activity, Acoustic features, Acoustic waves, acoustics, animal, animal communication, Animals, article, Astacoidea, bioacoustics, circadian rhythm, Computer-Assisted, crayfish, Female, immersion, Intra-specific interactions, Invasive species, Linear Models, male, Movement, movement (physiology), Natural environments, Natural reserves, Passive acoustics, Peak frequencies, physiology, Recording stations, Recording systems, Shellfish, signal processing, social behavior, sound detection, Sound Spectrography, statistical model, Tanks (containers), Time, Time Factors, Underwater acoustic signal, Underwater acoustics, Video Recording, videorecording, Water, Wetlands, Wide-band|
This study describes the underwater acoustic behavior of the red swamp crayfish Procambarus clarkii. The study was conducted both in a tank and in the natural environment. The tank was equipped with video and acoustic recording systems. Observations were conducted to identify the underwater acoustic signals produced and their association with behavioral events and the movement status of the animals. In a lake in a natural reserve, a remote acoustic recording station was used to study the circadian underwater acoustic activity of the crayfish and to assess the acoustic features of the signals. The red swamp crayfish produces irregular trains of wide-band pulses (duration 0.4 ms, SPLPK 128 dB re 1 μPa, peak frequency 28 kHz, bandwidth RMS 20 kHz). The production of signals is positively related to intraspecific interactions (encounter/approach, fighting and successive Tail Flips). In the natural environment, acoustic activity is almost absent during the day, increases abruptly at sunset and continues until dawn. This study reveals the previously unknown underwater acoustic signals of Procambarus clarkii and the potential of passive acoustic methods to monitor the presence, the abundance and the behavioral activities of this invasive species. © 2012 Acoustical Society of America.
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