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

Other titles Análisis exploratorio de los datos de determinación de edad de Mullus barbatus en el Mediterráneo
Type Article
Date 2019-12
Language English
Other localization http://scimar.icm.csic.es/scimar/index.php/secId/6/IdArt/4561/
Author(s) Carbonara Pierluigi1, Zupa Walter1, Anastasopoulou Aikaterini2, Bellodi Andrea3, Bitetto Isabella1, Charilaou Charis4, Chatzispyrou Archontia2, Elleboode Romain5, Esteban Antonio6, Follesa Maria Cristina3, Isajlovic Igor7, Jadaud Angelique8, Garcia-Ruiz Cristina9, Giannakaki Amalia10, Guijarro Beatriz11, Kiparissis Sotiris Elias12, Ligas Alessandro13, Mahe KeligORCID5, Massaro Andrea14, Medvesek Damir7, Mytilineou Chryssi2, Ordines Francesc11, Pesci Paola3, Porcu Cristina3, Peristeraki Panagiota15, 16, Thasitis Ioannis4, Torres Pedro9, Spedicato Maria Teresa1, Tursi Angelo17, Sion Letizia17
Affiliation(s) 1 : COISPA Tecnologia and Ricerca, Stazione Sperimentale per lo Studio delle Risorse del Mare, Bari, Italy
2 : Hellenic Centre for Marine Research, 46.7 km Athens Sounio ave., P.O. Box 712, 19013 Anavyssos, Attiki, Greece.
3 : Department of Life and Environmental Sciences, University of Cagliari, via T. Fiorelli 1, 09126 Cagliari, Italy
4 : Department of Fisheries and Marine Research, Ministry of Agriculture, Rural Development and Environment, Nicosia, Cyprus
5 : French Research Institute for Exploitation of the Sea (Ifremer), Boulogne-sur-Mer, France
6 : Instituto Español de Oceanografía (IEO), Centro Oceanográfico de Murcia, Murcia, Spain
7 : Institute of Oceanography and Fisheries Split, Šetalište Ivana Meštroviæa 63, 21000 Split, Croatia
8 : MARBEC, Ifremer, Univ Montpellier, CNRS, IRD, 34203 Sète, France
9 : Instituto Español de Oceanografía (IEO), Centro Oceanográfico de Málaga, Fuengirola, Málaga, Spain.
10 : Hellenic Center for Marine Research, Institute of Marine Biological Resources and Inland Waters, 71003 Heraklion, Greece.
11 : Intituto Español de Oceanografía, Centre Oceanogràfic de les Balears, Moll de Ponent s/n, 07015 Palma de Mallorca, Illes Baleares, Spain
12 : Hellenic Agricultural Organization-DEMETER, Fisheries Research Institute of Kavala, 64007 Nea Peramos, Kavala, Greece
13 : Centro Interuniversitario di Biologia Marina ed Ecologia Applicata, Viale Nazario Sauro 4, 57128 Livorno, Italy.
14 : APLYSIA, Via Menichetti 35, 57121 Livorno, Italy.
15 : Hellenic Center for Marine Research, Iraklion, Crete, Greece.
16 : University of Crete, Biology Department, Stavrakia, Heraklion, Crete.
17 : University of Bari Aldo Moro (UNIBA), Department of Biology, Via Orabona 4, 70125 Bari, Italy.
Source Scientia Marina (0214-8358) (Institut de Ciències del Mar de Barcelona, CSIC), 2019-12 , Vol. 83 , N. S1 , P. 271-279
DOI 10.3989/scimar.04999.19A
WOS© Times Cited 5
Note Mediterranean demersal resources and ecosystems: 25 years of MEDITS trawl surveys M.T. Spedicato, G. Tserpes, B. Mérigot and E. Massutí (eds)
Keyword(s) Mullus barbatus, age variability, MEDITS, Mediterranean, reader effect, false rings, date of birth

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.

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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 (2019). Explorative analysis on red mullet (Mullus barbatus) ageing data variability in the Mediterranean. Scientia Marina, 83(S1), 271-279. Publisher's official version : https://doi.org/10.3989/scimar.04999.19A , Open Access version : https://archimer.ifremer.fr/doc/00591/70320/