Doring J. auteur aut IRD Wagner C. auteur aut IRD Tiedemann M. auteur aut IRD Brehmer Patrice auteur aut IRD Ekau W. auteur aut IRD text journalArticle eng text/pdf born digital access The gross energy content of spawning batches and the microchemistry of sagittal otoliths in individual female bonga shad Ethmalosa fimbriata were compared between contrasting sampling sites at the Senegalese southern coast and inside the hypersaline Sine Saloum Estuary. Results show that females spawning in the estuary's middle reaches invested almost three times more energy into reproduction (115 +/- 65 J g(-1) body mass) than their neritic counterparts (39 +/- 34 J g(-1) body mass). Also, female otolith levels of Ba:Ca, Sr:Ca and Zn:Ca either differed significantly between study sites or could be linked to heterogeneous environmental variables. A quadratic discriminant function analysis provided evidence of segregated spawning populations of E. fimbriata in southern Senegalese waters. specialized Clupeidae inverse estuary oocyte reproductive investment Senegal stock discrimination spawning components SENEGAL 034 94 2 241-250 2019 0022-1112 https://www.documentation.ird.fr/hor/fdi:010075215 10.1111/jfb.13881 0022-1112 [F B010075215] https://www.documentation.ird.fr/hor/fdi:010075215 https://www.documentation.ird.fr/intranet/publi/2019/03/010075215.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2019-04-03 2025-02-24 fdi:010075215 fre