Lett Christophe auteur aut IRD Barrier Nicolas auteur aut IRD Ourmières Y. auteur aut IRD Petit Cécile auteur aut IRD Labonne Maylis auteur aut IRD Bourjea J. auteur aut IRD Darnaude A. M. auteur aut IRD text journalArticle eng text/pdf born digital access To investigate dispersal and connectivity between spawning and lagoon nursery habitats of the gilthead seab-ream, Sparus aurata, in the Gulf of Lions (northwestern Mediterranean Sea), we modeled the potential transport of the species' larvae between its supposed main spawning site in the region (the Planier Island) and two of its main local nursery areas (the coastal lagoons of Thau and Salses-Leucate). Passive larval drift simulations using a dispersal biophysical model showed a large variability in the possible trajectories from spawning to nursery areas and in the predicted ages for larvae arrival on the two nursery sites. The most common ages at arrival obtained in the simulations (20-60 days) are broadly consistent with previous modeling studies but contrast with the actual ages of the S. aurata post-larvae collected in 2016 and 2017 at time of the lagoon entrances (60-90 days, from otolith readings). The period between 25 and 70 days being critical for gilthead seabream larvae to acquire sufficient swimming, osmoregulatory, and olfactory abilities to enter coastal lagoons, we argue that ontogenic development plays a crucial role in the transport and local retention of S. aurata larvae in the studied region, explaining the discrepancy between simulation results and observed data. specialized Sparus aurata Gulf of Lions Fish Larvae Models-hydrodynamic Biophysical model Connectivity Otolith MEDITERRANEE 040 020 152 104781 [15 ] 2019 0141-1136 https://www.documentation.ird.fr/hor/fdi:010077396 10.1016/j.marenvres.2019.104781 0141-1136 [F B010077396] https://www.documentation.ird.fr/hor/fdi:010077396 https://www.documentation.ird.fr/intranet/publi/2019/12/010077396.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2020-01-07 2025-02-24 fdi:010077396 fre