Explorative analysis on red mullet (Mullus barbatus) ageing data variability in the Mediterranean

Scientia Marina

Andrea Massaro¹  Pierluigi Carbonara²  Isabella Bitetto²  Maria Teresa Spedicato²  Walter Zupa²  Alessandro Ligas³  Ioannis Thasitis⁴  Charis Charilaou⁴  Cristina Porcu⁵  Andrea Bellodi⁵  Maria Cristina Follesa⁵  Paola Pesci⁵  Romain Elleboode⁶  Kelig Mahé⁶  Sotiris Elias Kiparissis⁷  Panagiota Peristeraki⁸  Amalia Giannakaki⁹  Chryssi Mytilineou^1,10  Aikaterini Anastasopoulou^1,10  Archontia Chatzispyrou^1,10  Damir Medvesek^1,11  Igor Isajlovic^1,11  Antonio Esteban^1,12  Pedro Torres^1,13  Cristina García-Ruiz^1,13  Beatriz Guijarro^1,14  Francesc Ordines^1,14  Angélique Jadaud^1,15  Angelo Tursi^1,16  Letizia Sion^1,16 

[1] APLYSIA;COISPA Tecnologia and Ricerca, Stazione Sperimentale per lo Studio delle Risorse del Mare;Centro Interuniversitario di Biologia Marina ed Ecologia Applicata;Department of Fisheries and Marine Research, Ministry of Agriculture, Rural Development and Environment;Department of Life and Environmental Sciences, University of Cagliari;French Research Institute for Exploitation of the Sea (Ifremer);Hellenic Agricultural Organization-DEMETER, Fisheries Research Institute of Kavala;Hellenic Center for Marine Research - University of Crete, Biology Department;Hellenic Center for Marine Research, Institute of Marine Biological Resources and Inland Waters;Hellenic Centre for Marine Research;Institute of Oceanography and Fisheries Split;Instituto Español de Oceanografía (IEO), Centro Oceanográfico de Murcia;Instituto Español de Oceanografía (IEO), Centro Oceanográfico de Málaga;Intituto Español de Oceanografía, Centre Oceanogràfic de les Balears;MARBEC, Ifremer, Univ Montpellier, CNRS;University of Bari Aldo Moro (UNIBA), Department of Biology;

关键词: mullus barbatus;    age variability;    medits;    mediterranean;    reader effect;    false rings;    date of birth;   

DOI  :  10.3989/scimar.04999.19A

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown