E-viri
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Shen, Mengting; Li, Jinlin; Wang, Xiuxiu; Zhang, Rixin; Wang, Zihao; Cao, Zhengliang
2021 OES China Ocean Acoustics (COA), 2021-July-14Conference Proceeding
This paper is aimed to analyze Whiteleg shrimp's (Penaeus vannamei's) acoustic behavior collected in a farming pond. According to artificial feeding events, the chewing sound from shrimps is obtained by a passive acoustic recorder. The sound pressure level of the 1-minute segments between the two feedings is lower than that of after feeding, but higher than that of before feeding. There are two changing parts in the spectrum of several segments, in which one type has a low-frequency energy mainly in 2kHz, and the other has a high frequency energy in 4-15kHz. It is related to shrimps chewing behavior with a large number of 'click' signals. By analyzing the chewing sound from individual shrimp, time length of the signal is around 0.01s and the frequency range is about 4-15kHz. The behavior corresponding to the sound pressure level of 2kHz mentioned above has not been determined. In addition, from no-feeding data at night, there are also short-time 'click' signals, which are notably different from daytime's data, and sometimes is concentrated on the low-frequency (about 4kHz) from the energy of the signal. Further research is needed to determine whether there is a relationship between the two low-frequency signals.
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