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Provedor de dados:  ArchiMer
País:  France
Título:  Explorative analysis on red mullet (Mullus barbatus) ageing data variability in the Mediterranean
Autores:  Carbonara, Pierluigi
Zupa, Walter
Anastasopoulou, Aikaterini
Bellodi, Andrea
Bitetto, Isabella
Charilaou, Charis
Chatzispyrou, Archontia
Elleboode, Romain
Esteban, Antonio
Follesa, Maria Cristina
Isajlovic, Igor
Jadaud, Angelique
Garcia-ruiz, Cristina
Giannakaki, Amalia
Guijarro, Beatriz
Kiparissis, Sotiris Elias
Ligas, Alessandro
Mahe, Kelig
Massaro, Andrea
Medvesek, Damir
Mytilineou, Chryssi
Ordines, Francesc
Pesci, Paola
Porcu, Cristina
Peristeraki, Panagiota
Thasitis, Ioannis
Torres, Pedro
Spedicato, Maria Teresa
Tursi, Angelo
Sion, Letizia
Data:  2019-12
Ano:  2019
Palavras-chave:  Mullus barbatus
Age variability
Reader effect
False rings
Date of birth
Resumo:  The uncertainty in age estimation by otolith reading may be at the root of the large variability in red mullet (Mullus barbatus) growth models in the Mediterranean. In the MEDITS survey, red mullet age data are produced following the same sampling protocol and otolith reading methodology. However, ageing is assigned using different interpretation schemes, including variations in theoretical birthdate and number of false rings considered, in addition to differences in the experience level of readers. The present work analysed the influence of these variations and the geographical location of sampling on red mullet ageing using a multivariate approach (principal component analysis). Reader experience was the most important parameter correlated with the variability. The number of rings considered false showed a significant effect on the variability in the first age groups but had less influence on the older ones. The effect of the theoretical birthdate was low in all age groups. Geographical location had a significant influence, with longitude showing greater effects than latitude. In light of these results, workshops, exchanges and the adoption of a common ageing protocol based on age validation studies are considered fundamental tools for improving precision in red mullet ageing.
Tipo:  Text
Idioma:  Inglês

Editor:  Institut de Ciències del Mar de Barcelona, CSIC
Formato:  application/pdf
Fonte:  Scientia Marina (0214-8358) (Institut de Ciències del Mar de Barcelona, CSIC), 2019-12 , Vol. 83 , N. S1 , P. 271-279
Direitos:  info:eu-repo/semantics/openAccess

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