FN Archimer Export Format PT J TI Directional bilateral asymmetry in otolith morphology may affect fish stock discrimination based on otolith shape analysis BT AF MAHE, Kelig IDER, Djamila MASSARO, Andrea HAMED, Oussama JURADO-RUZAFA, Alba GONCALVES, Patricia ANASTASOPOULOU, Aiketerini JADAUD, Angelique MYTILINEOU, Chryssi ELLEBOODE, Romain RAMDANE, ZohIR BACHA, Mahmoud AMARA, Rachid DE PONTUAL, Helene ERNANDE, Bruno AS 1:1;2:2;3:3;4:4;5:5;6:6;7:7;8:8;9:7;10:1;11:2;12:9;13:9;14:10;15:1; FF 1:PDG-RBE-HMMN-LRHBL;2:;3:;4:;5:;6:;7:;8:PDG-RBE-MARBEC-LHM;9:;10:PDG-RBE-HMMN-LRHBL;11:;12:;13:;14:PDG-RBE-STH-LBH;15:PDG-RBE-HMMN-LRHBL; C1 Fisheries Laboratory, IFREMER, 150 Quai Gambetta, BP 699, 62 321 Boulogne-sur-Mer, France Laboratoire de Zoologie Applique´e et d’Ecophysiologie Animale, Universite´ Abderrahmane Mira, Be´jaý¨a, Algerie APLYSIA – Via Menichetti 35, 27121 Livorno, Italy Universite´ de Tunis El Manar, Campus Universitaire, 2092 El Manar II, Tunisie Instituto Espa~nol de Oceanografý´a, Centro Oceanogra´fico de Canarias, 38180 Santa Cruz de Tenerife, Spain Departamento do Mar e Recursos Marinhos, Intituto Portugueˆs do Mar e da Atmosfera (IPMA), Lisboa, Portugal Hellenic Centre for Marine Research, PO Box 712, P.C. 19013, Anavyssos Attiki, Athens, Greece Fisheries Laboratory, IFREMER-UMR MARBEC, Avenue Jean Monnet, CS 30171, 34203 Se`te Cedex, France Laboratoire d’Oce´anologie et de Ge´osciences, Universite´ Littoral Coˆte d’Opale, Univ. Lille, CNRS, UMR 8187, LOG, F 62930 Wimereux, France IFREMER, Sciences et Technologies Halieutiques, CS 10070, 29280 Plouzane´, France C2 IFREMER, FRANCE UNIV BEJAIA, ALGERIA APLYSIA, ITALY UNIV TUNIS EL MANAR, TUNISIA IEO, SPAIN IPMA, PORTUGAL HELLENIC CTR MARINE RES, GREECE IFREMER, FRANCE UNIV LITTORAL COTE D'OPALE, FRANCE IFREMER, FRANCE SI BOULOGNE SETE BREST SE PDG-RBE-HMMN-LRHBL PDG-RBE-MARBEC-LHM PDG-RBE-STH-LBH UM MARBEC IN WOS Ifremer UPR WOS Ifremer UMR copubli-france copubli-europe copubli-univ-france copubli-int-hors-europe copubli-sud IF 3.188 TC 37 UR https://archimer.ifremer.fr/doc/00468/57967/60418.pdf LA English DT Article DE ;Boops boops;elliptical Fourier analysis;Mediterranean Sea;side effect;stock identification AB Otolith shape analysis is an efficient fish stock identification tool. However, most applications used left and right otoliths or only one of them arbitrarily chosen without testing for biases resulting from potential directional bilateral asymmetry (DA) in otolith shape, i.e. a unimodal population-level deviation form bilateral symmetry between right and left otolith shapes. In this study, 560 bogues (Boops boops) were sampled from 11 geographical locations from the Canary Islands to the Aegean Sea and elliptical Fourier descriptors were used to describe their otoliths’ shape. First, a significant otolith DA was observed at the global scale with an average amplitude of 2.77%. However, at the scale of sampling locations, DA was not always significant and varied in amplitude and direction. Second, population structure was investigated using the shape of either right otoliths or left otoliths or both together. Analyses based on right otoliths or both otoliths together, suggested three stock units: a North-Western Mediterranean Sea stock, an Eastern Mediterranean Sea stock, and a Central-Eastern Atlantic Ocean and South-Western Mediterranean Sea stock. In contrast, no coherent geographical pattern was found based on left otoliths. Our results highlight the importance of accounting for potential otolith DA in otolith shape-based stock identification. PY 2019 PD JAN SO Ices Journal Of Marine Science SN 1054-3139 PU Oxford University Press (OUP) VL 76 IS 1 UT 000462735600022 BP 232 EP 243 DI 10.1093/icesjms/fsy163 ID 57967 ER EF