Kone V. auteur aut IRD Lett Christophe auteur aut IRD Penven Pierrick auteur aut IRD Bourlès Bernard auteur aut IRD Djakoure S. auteur aut IRD text conferencePaper eng text/pdf reformatted digital access Sardinella aurita is the most abundant small pelagic fish in the northern Gulf of Guinea. Its reproduction and recruitment depend crucially on environmental conditions. We developed a biophysical model of S. aurita early life history by coupling offline an individual-based model with the regional oceanic modeling system (ROMS). We used this model to investigate the main factors driving variability in eggs and larval dispersal and survival in the northern Gulf of Guinea. Precisely, individuals were released from different spawning areas along the coast and tracked for a period of 28 days corresponding to their planktonic phase. Individuals that remained in the coastal recruitment areas at an age more than 7 days, at which they can supposedly actively retain themselves in a favorable area, were considered as recruited. Simulation results show the importance of the spawning areas around Cape Palmas and Cape Three Point where cyclonic eddies trap eggs and larvae along the coast, preventing their advection offshore by the Guinea current. The spawning period also plays a key role in the recruitment success, with highest coastal retention obtained during the major upwelling period (July to September). We find that, a second retention peak can occur during the minor upwelling period (February to March) when larval mortality due to temperature is included in the model. These results are in general agreement with knowledge of S. aurita reproduction in the northern Gulf of Guinea. The spawning depth also influences the recruitment success of S. aurita in the northern Gulf of Guinea. The retention increasing with the spawning depth. specialized AFRIQUE DE L'OUEST ATLANTIQUE GOLFE DE GUINEE 032 040 021 ICAWA : International Conference AWA, 3., Dakar (SEN), 2016/12/13-15 90-91 Brehmer Patrice ed. edt IRD Ba B. ed. edt IRD Kraus G. ed. edt IRD Dakar SRFC/CSRP 2017 https://www.documentation.ird.fr/hor/fdi:010072133 978-2-9553602-0-5 [F A010071832] https://www.documentation.ird.fr/hor/fdi:010072133 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers18-01/010072133.pdf IRD - Base Horizon / Pleins textes 2018-01-30 2018-02-05 fdi:010072133 fre