@inproceedings{fdi:010072133, title = {{A} biophysical model of {S}ardinella aurita early life history in the northern {G}ulf of {G}uinea [r{\'e}sum{\'e}]}, author = {{K}one, {V}. and {L}ett, {C}hristophe and {P}enven, {P}ierrick and {B}ourl{\`e}s, {B}ernard and {D}jakoure, {S}.}, editor = {}, language = {{ENG}}, abstract = {{S}ardinella aurita is the most abundant small pelagic fish in the northern {G}ulf of {G}uinea. {I}ts reproduction and recruitment depend crucially on environmental conditions. {W}e developed a biophysical model of {S}. aurita early life history by coupling offline an individual-based model with the regional oceanic modeling system ({ROMS}). {W}e used this model to investigate the main factors driving variability in eggs and larval dispersal and survival in the northern {G}ulf of {G}uinea. {P}recisely, individuals were released from different spawning areas along the coast and tracked for a period of 28 days corresponding to their planktonic phase. {I}ndividuals 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. {S}imulation results show the importance of the spawning areas around {C}ape {P}almas and {C}ape {T}hree {P}oint where cyclonic eddies trap eggs and larvae along the coast, preventing their advection offshore by the {G}uinea current. {T}he spawning period also plays a key role in the recruitment success, with highest coastal retention obtained during the major upwelling period ({J}uly to {S}eptember). {W}e find that, a second retention peak can occur during the minor upwelling period ({F}ebruary to {M}arch) when larval mortality due to temperature is included in the model. {T}hese results are in general agreement with knowledge of {S}. aurita reproduction in the northern {G}ulf of {G}uinea. {T}he spawning depth also influences the recruitment success of {S}. aurita in the northern {G}ulf of {G}uinea. {T}he retention increasing with the spawning depth.}, keywords = {{AFRIQUE} {DE} {L}'{OUEST} ; {ATLANTIQUE} ; {GOLFE} {DE} {GUINEE}}, numero = {}, pages = {90--91}, booktitle = {{I}nternational conference {ICAWA} 2016 : extended book of abstract : the {AWA} project : ecosystem approach to the management of fisheries and the marine environment in {W}est {A}frican waters}, year = {2017}, ISBN = {978-2-9553602-0-5}, URL = {https://www.documentation.ird.fr/hor/fdi:010072133}, }