Feeding sounds of turbot (Scophthalmus maximus) and their potential use in the control of food supply in aquaculture: 1. Spectrum analysis of the feeding sounds
Lagardère, J.P.; Mallekh, R. (2000). Feeding sounds of turbot (Scophthalmus maximus) and their potential use in the control of food supply in aquaculture: 1. Spectrum analysis of the feeding sounds. Aquaculture 189: 251-258
In: Aquaculture. Elsevier: Amsterdam; London; New York; Oxford; Tokyo. ISSN 0044-8486; e-ISSN 1873-5622, meer
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| Auteurs | | Top |
- Lagardère, J.P., meer
- Mallekh, R.
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| Abstract |
Turbot generate feeding sounds which vary with food intake intensity. The feeding sound activates a broad frequency band (0-20 kHz). Nevertheless, in frequency range 7-10 kHz, the feeding sounds are little modified by the different noises generated by farming environment (pumps, compressors,...) and by farming activities (pellet spreading giving two emission peaks: 0.5-1 and 6 kHz). Within the 7-10 kHz frequency range, the amplitude of the variations in sound pressure level during feeding is 15 to 20 dB. This variation appears sufficient to faithfully reproduce the variation in intensity of fish feeding and to ensure the development of a fish-feeding acoustic detector. |
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