FN Archimer Export Format PT J TI Tests and jaws’ morphological patterns of regular sea urchin Paracentrotus lividus (Lamarck, 1816) in relation to environmental conditions BT AF CAILL-MILLY, Nathalie Mahias, Jérémy Bru, Noelle DE CASAMAJOR, Marie-Noelle Pigot, Thierry Corbet, Paul AS 1:1;2:2,3;3:2,3;4:1;5:4;6:1; FF 1:PDG-ODE-LITTORAL-LERAR;2:;3:;4:PDG-ODE-LITTORAL-LERAR;5:;6:; C1 IFREMER, Laboratoire Environnement Ressources Arcachon - Fédération MIlieux et Ressources Aquatiques (MIRA), 1 Allée du Parc Montaury, 64600 Anglet, France UNIV PAU & PAYS ADOUR, Collège STEE – 1 Allée Parc Montaury, 64600 Anglet, France CNRS/ UNIV PAU & PAYS ADOUR/ E2S UPPA, Laboratoire de Mathématiques et de leurs Applications de Pau (LMAP) - Fédération MIlieux et Ressources Aquatiques (MIRA), UMR5142, 64000 Pau, France CNRS/ UNIV PAU & PAYS ADOUR/ E2S UPPA, Institut des Sciences Analytiques et de Physico- Chimie pour l’Environnement et les Matériaux (IPREM) – Fédération MIlieux et Ressources Aquatiques (MIRA), UMR5254, 64600 Anglet, France C2 IFREMER, FRANCE UNIV PAU & PAYS ADOUR, FRANCE UNIV PAU & PAYS ADOUR, FRANCE UNIV PAU & PAYS ADOUR, FRANCE SI ANGLET SE PDG-ODE-LITTORAL-LERAR IN WOS Ifremer UPR copubli-france copubli-univ-france IF 1.624 TC 1 UR https://archimer.ifremer.fr/doc/00612/72402/71347.pdf LA English DT Article DE ;Morphometry;Body size;Aristotle's lantern;Sewage discharge;Coastal zone;Biological indices AB This paper investigates whether morphological variability of test and Aristotle’s lantern can be detected in sea urchins exposed to domestic pollution and whether this variability can be also related to tidal level and hydrodynamic features. The study was conducted on four sites along the French Basque coast. Each site is characterized by its geological layers’ orientation, regardless of its proximity to sewage outlets. Analyses on high-resolution pictures of jaws were performed and three parameters were retained: length, height and demipyramid dry mass. Five shape descriptors were consequently defined regarding the test and the jaws. Individuals with heavy test density associated with highly developed demipyramid regarding test diameter and height were preferentially observed in intertidal areas, remoteness from treatment plants and in south-oriented geological layers. High test hemispherical index and demipyramid elongation index were preferentially found far away from treatment plants. Results contribute to improving knowledge on pressure impact assessment and on state of the environment conservation in a defined area. It may also be useful to propose management measures on an appropriate scale for a species that is usually managed on a regional basis. PY 2020 PD MAR SO Regional Studies In Marine Science SN 2352-4855 PU Elsevier VL 35 UT 000525758600054 DI 10.1016/j.rsma.2020.101220 ID 72402 ER EF