Scientia Marina, Vol 75, No 2 (2011)

Growth of young-of-the-year European anchovy (Engraulis encrasicolus, L.) in the Bay of Biscay

Naroa Aldanondo
AZTI–Tecnalia, Marine Research Unit , Spain

Unai Cotano
AZTI–Tecnalia, Marine Research Unit , Spain

Egoitz Etxebeste
AZTI–Tecnalia, Marine Research Unit , Spain


Otolith daily increment analysis was used to describe the first growth season of young-of-the-year anchovy (Engraulis encrasicolus L.) in the Bay of Biscay. Anchovy larvae and juveniles were sampled during their growth season over a three year period (2004, 2005 and 2006). A logistic curve was fitted to the length at age data. At the end of the first year of growth, length was 168.3 mm, with a maximum growth rate of 1.85 mm day -1 for 73 days after hatching. Moreover, a Gompertz growth model was applied to estimate otolith growth parameters. At the end of the first year the otolith radius was 1759 μm, with a maximum growth increment of 22.19 μm day-1 observed 56 days after hatching. Standard length and otolith radius were closely related; however, this relationship showed a characteristic change from exponential in the larval stage to linear in the juvenile stage.


Bay of Biscay; early life stage; European anchovy; fish length-otolith radius relationship; growth; otolith

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