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dc.creatorOrduna Marín, Carloses
dc.creatorEncina Encina, Lourdeses
dc.creatorRodríguez Ruiz, Amadoraes
dc.creatorRodríguez Sánchez, Victoriaes
dc.date.accessioned2021-12-17T10:14:09Z
dc.date.available2021-12-17T10:14:09Z
dc.date.issued2021
dc.identifier.citationOrduna Martín, C., Encina Encina, L., Rodríguez Ruiz, A. y Rodríguez Sánchez, V. (2021). Hydroacoustics for density and biomass estimations in aquaculture ponds. Aquaculture, 545, 737240.
dc.identifier.issn0044-8486 (impreso)es
dc.identifier.urihttps://hdl.handle.net/11441/128378
dc.description.abstractThe use of hydroacoustics is currently being studied and developed as a promising non-intrusive methodology to monitor and manage fish stocks in aquaculture farms. The main objective of this study was to develop an acoustic method for the estimation of fish density and biomass in inland aquaculture farms and test the accuracy and precision of the estimates with real data provided by the company. The study was conducted in sea bass (Dicentrarchus labrax) production ponds located in Seville (Southern Spain). A Simrad EK60 echosounder with two split-beam circular transducers operating simultaneously at 200 kHz was used for hydroacoustic surveys. Two different hydroacoustic designs were considered: central trajectories and zigzag trajectories. The accuracy and precision of the estimates were examined in order to select the best sampling design. Due to a non-homogeneous fish distribution in the pond caused by the avoidance behaviour, as a response to the sampling disturbance presented by fish, acoustic density and biomass were corrected by applying sampling theory according to the probability of fish detection. When density and biomass were corrected, the estimates became highly accurate and precise with respect to real data, which confirms that the proposed method is adequate. Similarly, acoustic estimates of fish weight were highly in agreement with real data, due to the use of specific equations developed “in situ” for the study. Although no significant differences were recorded in the density and biomass estimates with regard to the trajectory used (central vs. zigzag), it was observed that the most accurate agreement and precision were always obtained in central trajectories. Therefore, central design is proposed as the most appropriate design for hydroacoustic measurements in inland ponds. The results obtained in this study provide estimates of density and biomass that accurately match the real data, supporting the use of hydroacoustics as a potentially valid tool to manage inland aquaculture farms.es
dc.formatapplication/pdfes
dc.format.extent11 p.es
dc.language.isoenges
dc.publisherElsevieres
dc.relation.ispartofAquaculture, 545, 737240.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectAquaculturees
dc.subjectHydroacousticses
dc.subjectSea basses
dc.subjectGilt-head sea breames
dc.subjectPondses
dc.titleHydroacoustics for density and biomass estimations in aquaculture pondses
dc.typeinfo:eu-repo/semantics/articlees
dcterms.identifierhttps://ror.org/03yxnpp24
dc.type.versioninfo:eu-repo/semantics/publishedVersiones
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Biología Vegetal y Ecologíaes
dc.relation.publisherversionhttps://doi.org/10.1016/j.aquaculture.2021.737240es
dc.identifier.doi10.1016/j.aquaculture.2021.737240es
dc.journaltitleAquaculturees
dc.publication.volumen545es
dc.publication.initialPage737240es

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