Synchronised acoustic and optical measurements of bluefin tuna: from cage monitoring and catch control, in the way to sonar biomass estimates
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Identificadores
URI: http://hdl.handle.net/10508/11457Compartir
Metadatos
Mostra el registre complet de l'elementAutor/es
Espinosa, V. (Víctor); Puig-Pons, V.; Pérez-Arjona, I. (Isabel); Muñoz-Benavent, P.; Llorens, S. (Susana); Ordóñez, P.; Andreu-García, G.; Valiente-González, J.M.; Atienza-Vanacloig, V.; Ortega-García, A. (Aurelio); de-la-Gándara, F. (Fernando)Data
2019-09Tipo
conferenceObjectPalabras clave
bluefin tunaThunnus thynnus
biometrics
size/weight relationship
atún rojo
biomass estimates
Stereoscopic cameras
tuna fish farming
Acoustics
Automatic acoustic sizing
larval rearing
Resum
Ventral measurements offer a wide spectrum of automation possibilities of BFT biomass estimations in cages and transfers - A synchronized stereoscopic video+echosounder system allows to asign biometrical data of bluefin tuna to a particular track in an echogram. - Ventral TS (partial TS, operationally defined) correlates with bluefin tuna length. - Partial TS vs Log(L) linear adjustments allow to predict tuna length from "blind" acoustic measurements even with single beam. Ongoing works and needs: -Measurements with broadband (chirped) echosounders and pulse compression technique from different aspects (new multibeam sonar campaings) - Better understanding of bluefin tuna structures contributions through measurements and numerical simulations (better knowledge of BFT anatomy and physiology, 3D biometrics, numerical simulations of TS) - New transfer tests to improve feasibility and technology/methodology cross-checking
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