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Do environmental conditions (temperature and food composition) affect otolith shape during fish early-juvenile phase? An experimental approach applied to European Seabass (Dicentrarchus labrax) ArchiMer
Mahé, Kelig; Gourtay, Clemence; Bled--defruit, Geoffrey; Chantre, Celina; De Pontual, Helene; Amara, Rachid; Claireaux, Guy; Audet, C.; Zambonino-infante, Jose-luis; Ernande, Bruno.
Otolith shape is an efficient tool for fish stock discrimination. Therefore, it is crucial to identify the environmental parameters that could influence otolith morphogenesis and growth. Current global ocean warming negatively affects the production of polyunsaturated fatty acids (EPA and DHA) by phytoplankton and thus their availability in marine food webs. As EPA and DHA are essential nutrients for most fish species, their deficiency could affect many aspects of fish physiology, notably otolith morphogenesis. The goal of this study was to assess experimentally the combined influences of temperature (T) and dietary polyunsaturated fatty acid (PUFA) content on European seabass (Dicentrarchus labrax) otolith morphogenesis during early life stages. 300...
Tipo: Text Palavras-chave: N-3 polyunsaturated fatty acids; Otolith shape; Temperature effect; Elliptic Fourier descriptors; Multivariate mixed-effects models; Directional asymmetry.
Ano: 2019 URL:
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