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dc.contributor.authorde-la-Gándara, F. (Fernando) 
dc.contributor.authorMiquel-Batle, J. (Joan) 
dc.contributor.authorIglesias, M. (Magdalena) 
dc.contributor.authorBelmonte, A. (Antonio)
dc.contributor.authorAyora, E. (Elisa)
dc.contributor.authorGarcía-Gómez, A. (Antonio)
dc.descriptionResumen al Congreso y Posteres_ES
dc.description.abstractThe vertical migrations of bluefin tuna (27 individuals averaging 100 kg body weight) held in a 25 m diameter x 30 m deep "Polar Cycle" floating cage has been monitored using a SIMRAD EY 500 Echosounder. The system was composed by a 10x20 38 K cycles ceramic transducer attach to a platform floating in the center of the cage and connect to a transceiver. Data were stocked in a laptop. Energy for all the system was provide by two batteries. All these devices were located into an hermetic stainless steel box fixed on the external ring of the cage. Daily, in the morning, the system was stopped and data were downloaded The monitoring period was between February and April 2005. Tunas were fed with raw fish once a day, over 10:00 in the morning. The mean water temperature was 13.3 ºC. No termocline was observed in this period. Binary data provided by the transceiver, in daily files were visualized with the Sonar Data Echoview® (SonarData Pty Ltd, GPO Box 1387 Hobart, Tasmania, Australiaes_ES
dc.description.sponsorshipThis study is supported by the project REPRODOTT funded by the European Union 5th FP, (Contract Q5RS-2002-01355).es_ES
dc.publisherEuropean Aquaculture Society Special Publicationes_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Españaes_ES
dc.subjectThunnus thynnuses_ES
dc.subjectatún rojoes_ES
dc.subjectBluefin tunaes_ES
dc.titleUsing an echosounder system to study the vertical movements of captive bluefin tuna (Thunnus thynnus) in floating cageses_ES
dc.identifier.bibliographicCitationEuropean Aquaculture Society Special Publication 35:171-172es_ES
dc.publisher.centreCentro Oceanográfico de Murciaes_ES
dc.coverage.spatialStudyMurcia (SE Spain). Mediterranean coasten_US
dc.coverage.spatialStudyMediterranean Seaen
dc.coverage.spatialStudyWestern Mediterranean Seaen

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    Atribución-NoComercial-SinDerivadas 3.0 España
    Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 España