FN Archimer Export Format PT J TI Size-effect, asymmetry, and small-scale spatial variation in otolith shape of juvenile sole in the Southern North Sea BT AF Delerue-Ricard, Sophie Hanna, Stynen Barbut, Léo Morat, Fabien MAHE, Kelig Hablützel, Pascal I. Hostens, Kris Volckaert, Filip AS 1:1,2;2:1;3:1,3;4:4,5;5:6;6:1;7:2;8:1; FF 1:;2:;3:;4:;5:PDG-RBE-HMMN-LRHBL;6:;7:;8:; C1 Laboratory of Biodiversity and Evolutionary Genomics (LBEG), KU Leuven, Charles Deberiotstraat 32, Box 2439, 3000 Louvain, Belgium Institute for Agricultural and Fisheries Research, Ankerstraat 1, 8400 Ostend, Belgium Operational Directorate Natural Environment (OD Nature), Royal Belgian Institute of Natural Sciences (RBINS), Gulledelle 100, 1200 Brussels, Belgium PSL Research University: EPHE-UPVD-CNRS, USR3278 CRIOBE, 66860 Perpignan, France Laboratoire d’Excellence «CORAIL», BP 1013 Papetoai, 98729 Moore´a, French Polynesia Ifremer, Fisheries Laboratory, Sclerochronology Centre, 150 quai Gambetta, BP 699, 62321 Boulogne, France C2 UNIV KATHOLIEKE LEUVEN, BELGIUM ILVO, BELGIUM ROYAL BELGIAN INST NAT SCI, BELGIUM UNIV PERPIGNAN, FRANCE UNIV POLYNESIE FRANCAISE, FRANCE IFREMER, FRANCE SI BOULOGNE SE PDG-RBE-HMMN-LRHBL IN WOS Ifremer UPR copubli-france copubli-europe copubli-univ-france IF 2.385 TC 7 UR https://archimer.ifremer.fr/doc/00453/56476/58866.pdf LA English DT Article DE ;Early-life stages;Fourier coefficients;Nursery ground;Otolith shape;Small-scale spatial structure AB While otolith shape analysis can provide a valuable tool for discriminating between fish populations, factors which may influence otolith shape, such as the effect of size, directional asymmetry in growth, and local environmental conditions, are often unknown. Here, we analyzed differences in otolith shape across three size classes of age-0 common sole Solea solea L. from nursery grounds off the Belgian coast and in the Wadden Sea. Across size classes, form-factor decreased and roundness remained consistently high in both nursery grounds, while ellipticity increased in the Belgian nursery. Directional asymmetry between left and right otoliths measured by Fourier coefficients accounted for 0.96 and 7.2% of the variance when comparing otoliths overall, and for each size class, respectively. Within the Belgian nursery, results were consistent across sampling years and locations. In addition, otolith shape was marginally different between nursery grounds, but highly variable within nursery grounds. A small divergent group, which seems partly related to fish size, was noted at both spatial and temporal scales. Based on these results and before embarking on a study of population structure using otolith shape in age-0 common sole, we recommend testing for directional asymmetry and fish size effects across the entire region of interest. PY 2019 PD NOV SO Hydrobiologia SN 0018-8158 PU Springer VL 845 IS 1 UT 000509102300006 BP 95 EP 108 DI 10.1007/s10750-018-3736-3 ID 56476 ER EF