Data/hora: 10/06/2024 08:07:50

Provedor de dados: 	Institutional Archive of Ifreme (ArchiMer)	
País: 	France	
Título: 	Acoustical monitoring of fish density, behavior, and growth rate in a tank	
Autores: 	Conti, Stéphane; Roux, Philippe; Fauvel, Christian; Maurer, Benjamin; Demer, David.	
Data: 	2006-02	
Ano: 	2006	
Palavras-chave: 	Total scattering cross section; Fish counting; Growth rate; Remote monitoring; Fish behavior.	
Resumo: 	A challenge for the aquaculture community has long been the development of harmless techniques for monitoring fish in a tank. Acoustic telemetry has been used to monitor fish swimming behavior, and passive acoustics have been used to monitor fish feeding, but new techniques are needed to monitor non-invasively their numbers and growth rates. Recently, it has been demonstrated that the acoustical total scattering cross section of fish swimming in a tank can be measured from multiple reverberation time series. These measurements have been used successfully to estimate the number of fish in a tank in laboratory conditions, and to characterize their acoustical signatures. Here, we introduce a novel method for acoustically monitoring fish numerical density and behavior, and measuring their growth rates over long periods of time. These measurements can be performed remotely, without human interaction with the fish, and are harmless. To demonstrate the efficiency of these techniques, the number of sea bass, as well as the behaviors of sardines, rockfish and sea bass, in different tanks were monitored. Also, the growth rates of a group of starved sardines and a group of fed sardines were measured acoustically, over I month. For comparison, their average weight was measured once per week.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/2006/publication-1121.pdf

DOI:10.1016/j.aquaculture.2005.06.018	
Editor: 	Elsevier	
Relação: 	http://archimer.ifremer.fr/doc/00000/1121/	
Formato: 	application/pdf	
Fonte: 	Aquaculture (0044-8486) (Elsevier), 2006-02 , Vol. 251 , N. 2-4 , P. 314-323	
Fonte: 	2005 Elsevier B.V. All rights reserved