FN Archimer Export Format PT J TI Contrasting years in the Gironde estuary (Bay of Biscay, NE Atlantic) springtime outflow and consequences for zooplankton pyruvate kinase activity and the nutritional condition of anchovy larvae: an early view BT AF BERGERON, Jean-Pierre AS 1:; FF 1:PDG-DRV-RH-ECOHAL; C1 IFREMER, Ctr Nantes, Lab Ecol Halieut, F-44311 Nantes 03, France. C2 IFREMER, FRANCE SI NANTES SE PDG-DRV-RH-ECOHAL IN WOS Ifremer jusqu'en 2018 IF 1.105 TC 13 UR https://archimer.ifremer.fr/doc/2004/publication-448.pdf LA English DT Article CR PEGASE 97 PEGASE 98 PELGAS BO Thalassa DE ;River outflow;Pyruvate kinase;DNA/C index;Bay of Biscay;Anchovy larvae AB A major spawning ground of the European anchovy (Engraulis encrasicolus) population in the Bay of Biscay is located near the mouth of the Gironde estuary. Variations in the river discharge affect the supply of nutrients to the coastal marine area encompassing anchovy spawning grounds. Two "Pegase" cruises (May-June 1997 and 1998) observed two contrasting situations: with and without a superficial layer of less saline water. Two new nutritional indices were used to assess potential effects (1) on carbohydrate assimilation rates by zooplankton estimated via pyruvate kinase (PK) activity measurements and (2) on nutritional condition of the anchovy larvae measured with the DNA/C index. Both indices indicated a much poorer situation in 1997 compared to 1998. Results of this study implicate river outflow rate as a potential factor influencing larval anchovy condition and perhaps to some extent recruitment variability. PY 2004 PD SEP SO ICES Journal of Marine Science SN 1054-3139 PU Elsevier VL 61 IS 6 UT 000224546800006 BP 928 EP 932 DI 10.1016/j.icesjms.2004.06.019 ID 448 ER EF