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dc.contributor.authorAzzurro, Ernesto-
dc.contributor.authorAguzzi, Jacopo-
dc.contributor.authorMaynou, Francesc-
dc.contributor.authorChiesa, Juan José-
dc.contributor.authorSavini, Dario-
dc.date.accessioned2014-01-02T08:15:10Z-
dc.date.available2014-01-02T08:15:10Z-
dc.date.issued2013-03-
dc.identifierdoi: 10.1017/S0025315412001166-
dc.identifierissn: 0025-3154-
dc.identifiere-issn: 1469-7769-
dc.identifier.citationJournal of the Marine Biological Association of the UK 93(2): 461-470 (2013)-
dc.identifier.urihttp://hdl.handle.net/10261/89044-
dc.description10 pages, 6 figures, 1 table-
dc.description.abstractBehavioural rhythms in marine species have been mostly investigated in laboratory organisms and their expression within the animals' natural environments remains largely unknown. Here, we studied diel (i.e. 24-hours-based) and intra-diel (i.e. 12-hours-based) rhythmic variations in the abundance of seven shallow rocky-reef fish species, namely Coris julis, Epinephelus marginatus, Sarpa salpa, Serranus cabrilla, Serranus scriba, Sparisoma cretense and Thalassoma pavo, along the rocky shores of Linosa Island (Mediterranean Sea). Data were visually collected by trained volunteers along fixed transects at 3-hourly intervals throughout six consecutive 24-hours periods. Density estimates can vary greatly between consecutive days and during 24-hours periods according not only to the major day¿night changeover but also to minor intra-diel variations at the daylight hours. In the case of T. pavo, C. julis, S. cabrilla and S. salpa waveform analyses showed midday troughs in abundance within the 24-hours period but significant variation within the hours of daylight was highlighted only for T. pavo. Although results were not conclusive at the intra-dial level, the employment of volunteers represented a valuable tool for chronobiology, suitable to improve our understanding of fish behaviour in natural systems-
dc.description.sponsorshipThe present work was developed within the framework of the project CIESM Tropical Signals founded by Fondation Albert II of Monaco and the RITFIM project (CTM2010-16274) funded by the Spanish Ministry for Science and Innovation-
dc.language.isoeng-
dc.publisherCambridge University Press-
dc.rightsopenAccess-
dc.subjectCitizen science-
dc.subjectMediterranean Sea-
dc.subjectFourier analysis-
dc.subjectWaveform analysis-
dc.subjectVisual census-
dc.subjectActivity rhythms-
dc.subjectRocky-reef fishes-
dc.titleDiel rhythms in shallow Mediterranean rocky-reef fishes: a chronobiological approach with the help of trained volunteers-
dc.typeartículo-
dc.identifier.doi10.1017/S0025315412001166-
dc.relation.publisherversionhttp://dx.doi.org/10.1017/S0025315412001166-
dc.embargo.terms2014-04-01-
dc.date.updated2014-01-02T08:15:11Z-
dc.description.versionPeer Reviewed-
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