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Acoustic behaviour of male European lobsters ( Homarus gammarus ) during agonistic encounters ArchiMer
Jézéquel, Youenn; Coston-guarini, Jennifer; Chauvaud, Laurent; Bonnel, Julien.
Previous studies have demonstrated that male European lobsters (Homarus gammarus) use chemical and visual signals as a means of intraspecific communication during agonistic encounters. In this study, we show that they also produce buzzing sounds during these encounters. This result was missed in earlier studies because low-frequency buzzing sounds are highly attenuated in tanks, and are thus difficult to detect with hydrophones. To address this issue, we designed a behavioural tank experiment using hydrophones, with accelerometers placed on the lobsters to directly detect their carapace vibrations (i.e. the sources of the buzzing sounds). While we found that both dominant and submissive individuals produced carapace vibrations during every agonistic...
Tipo: Text Palavras-chave: Passive acoustics; Male European lobster; Agonistic encounter; Accelerometer; Buzzing sound; Carapace vibration; Tank; Acoustic communication.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00614/72565/71516.pdf
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Sound characterization of the European lobster Homarus gammarus in tanks ArchiMer
Jezequel, Youenn; Bonnel, Julien; Coston-guarini, Jennifer; Guarini, Jean-marc; Chauvaud, Laurent.
Experiments in marine behavioural ecology rely heavily on observations made in tanks. However, when studying acoustic behaviours of marine animals in confined volumes, the effects of reverberation must be characterized, something that has been overlooked in parts of the marine ecology literature. In this study, we characterized reverberation in tanks using an artificial sound source and examined the implications for bioacoustic studies using sounds emitted by the European lobster Homarus gammarus during feeding and in response to stress. Broadband and transient sounds commonly produced by crustaceans were severely impacted by reverberation such that their spectral characteristics and pulse width durations could not be assessed. In contrast, low-frequency...
Tipo: Text Palavras-chave: European lobster; Passive acoustics; Tanks; Reverberation; Rattle; Buzzing sound; Spectral analysis.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00439/55080/56512.pdf
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