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Tests and jaws’ morphological patterns of regular sea urchin Paracentrotus lividus (Lamarck, 1816) in relation to environmental conditions ArchiMer
Caill-milly, Nathalie; Mahias, Jérémy; Bru, Noelle; De Casamajor, Marie-noelle; Pigot, Thierry; Corbet, Paul.
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...
Tipo: Text Palavras-chave: Morphometry; Body size; Aristotle's lantern; Sewage discharge; Coastal zone; Biological indices.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00612/72402/71347.pdf
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