2018•DIGITAL.CSIC (Spanish National Research Council (CSIC))Open access
Report on age, growth and age-composition
Beatriz Morales-Nín, John Gabriel Ramírez, Marta Albo Puigserver, Marta Coll, Giráldez, Ana, Pedro Torres, Alberto García Arribas, J.M. Bellido-Millán, Pierluigi Carbonara, Follesa, Cristina, Andrea Massaro
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Abstract
In order to manage small pelagic fish species, such as European anchovy (Engraulis encrasicolus) and European sardine (Sardina pilchardus), and enable to implement properly stock assessment analysis, it is essential to study the growth and age determination of these species (Arneri et al. 2011). We (1) reviewed current information on growth of both species, (2) calculated new von Bertalanffy growth parameters, and (3) estimated age-length structure for both species in the GSA 06. Our review shows that the validation of the age interpretation is still rather incomplete to date, only indirect methods have been used and even some studies lack formal precision and accuracy. In some cases, length frequency analyses supported the data for the adults and birthdate distributions for the larvae. [...]