Diankha O. auteur aut IRD Ba A. auteur aut IRD Brehmer Patrice auteur aut IRD Brochier Timothée auteur aut IRD Sow B. A. auteur aut IRD Thiaw M. auteur aut IRD Gaye A. T. auteur aut IRD Ngom F. auteur aut IRD Demarcq Hervé auteur aut IRD text journalArticle eng text/pdf reformatted digital access We investigate Sardinella aurita and Sardinella maderensis recruitment success relative to the variability of oceanographic conditions in Senegalese waters using generalized additive models (GAM). Results show that recruitment of both species is marked by a strong intra-annual (seasonal) variation with minimum and maximum in winter and summer, respectively. Their interannual variations are synchronous until 2006 (recruitment decreasing), while from 2007 there is no synchrony. The model developed shows that sardinella recruitment variability is closely related to the tested environmental variables in the study area. However, the key environmental variables influencing the recruitment success are different for both species: the Coastal Upwelling Index and the sea surface temperature for S.aurita and S.maderensis, respectively. We report that recruitment success of S.aurita and S.maderensis are associated with distinct ranges of sea surface temperature, upwelling intensity, wind-induced turbulence, concentration of chlorophyll-a and north Atlantic oscillation index. Considering food security and socio-economic importance of both stocks, we recommend that consideration is given to the environmental variability in the small pelagic fish national management plans, particularly in the context of climate change. specialized recruitment success Sardinella aurita Sardinella maderensis upwelling West Africa SENEGAL ATLANTIQUE 040 27 4 351-365 2018 1054-6006 https://www.documentation.ird.fr/hor/fdi:010073102 10.1111/fog.12257 1054-6006 [F B010073102] https://www.documentation.ird.fr/hor/fdi:010073102 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers18-06/010073102.pdf IRD - Base Horizon / Pleins textes 2018-07-03 2023-07-11 fdi:010073102 fre