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Auteur (up) Lett, C.; Barrier, N.; Ourmières, Y.; Petit, C.; Labonne, M.; Bourjea, J.; Darnaude, A.M. url  doi
openurl 
  Titre Modeling larval dispersal for the gilthead seabream in the northwestern Mediterranean Sea Type Article scientifique
  Année 2019 Publication Revue Abrégée Marine Environmental Research  
  Volume Numéro Pages 104781  
  Mots-Clés Biophysical model; Connectivity; Fish; Gulf of Lions; Larvae; Models-hydrodynamic; Otolith  
  Résumé To investigate dispersal and connectivity between spawning and lagoon nursery habitats of the gilthead seabream, 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.  
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  ISSN 0141-1136 ISBN Médium  
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  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2613  
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