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Site fidelity and movements of gilthead sea bream (Sparus aurata) in a coastal lagoon (Ria Formosa, Portugal)
Abecasis, D.; Erzini, K. (2008). Site fidelity and movements of gilthead sea bream (Sparus aurata) in a coastal lagoon (Ria Formosa, Portugal). Est., Coast. and Shelf Sci. 79(4): 758-763. https://hdl.handle.net/10.1016/j.ecss.2008.06.019
In: Estuarine, Coastal and Shelf Science. Academic Press: London; New York. ISSN 0272-7714; e-ISSN 1096-0015, more
Peer reviewed article  

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Keywords
    Sparus aurata Linnaeus, 1758 [WoRMS]
    Marine
Author keywords
    Sparus aurata; acoustic telemetry; site fidelity; fish movement; Ria Formosa

Authors  Top 
  • Abecasis, D.
  • Erzini, K.

Abstract
    Short-time site fidelity and movements of gilthead sea bream (Sparus aurata) in a coastal lagoon were determined using passive acoustic telemetry. Nine fish, ranging from 20.1 to 32.5 cm total length, were surgically implanted with acoustic transmitters and monitored for up to 179 days. Minimum convex polygon areas ranged from 18,698.6 m2 to 352,711.9 m2. Home range sizes were small, with individuals using core areas on a daily basis. However, these core areas shifted within the study site over time towards the opening to the sea. Two different diel behaviors were recorded, with some individuals more active at night and others during day time. Some individuals also demonstrated homing abilities, returning to the capture site after being released more than 4 km away.

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