Growth of young-of-the-year European anchovy (Engraulis encrasicolus, L.) in the Bay of Biscay
Naroa Aldanondo, Unai Cotano and Egoitz Etxebeste

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.

Keywords: Bay of Biscay, early life stage, European anchovy, fish length-otolith radius relationship, growth, otolith.
Contents of this volume Sci. Mar. 75(2) : 227-235 Back PDF
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