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	Provedor de dados ArchiMer (2) Autor Amara, Rachid (1) Audet, C. (1) Bled--defruit, Geoffrey (1) Chantre, Celina (1) Claireaux, Guy (1) De Pontual, Helene (1) Ernande, Bruno (1) Gourtay, Clemence (1) Mahe, Kelig (1) Mahé, Kelig (1) Zambonino-infante, Jose-luis (1) Mais... Palavra-chave Directional asymmetry (2) Acides gras (1) Asymétrie directionnelle (1) Degrés-jours de croissance (1) Descripteurs de Fourier (1) Elliptic Fourier descriptors (1) Fatty acids (1) Fish stock (1) Forme (1) Fourier descriptors (1) Growing degree days (1) Multivariate mixed-effects models (1) N-3 polyunsaturated fatty acids (1) Otolith (1) Otolith shape (1) Otolithe (1) Shape (1) Stock halieutique (1) Temperature (1) Temperature effect (1) Mais... Tipo do documento Text (2) Ano 2019 (2) País France (2) Idioma Francês (1) Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Sources de variation de la forme des otolithes: Implications pour la discrimination des stocks de poissons ArchiMer Mahe, Kelig. The assessment and management of fish populations is based on the use of management units called fish stocks. The shape of otoliths, calcified structures of the fish's inner ear, can be used to discriminate these stocks. First, this thesis focuses on the study of the spatio-temporal variability of the otolith’s shape for three fish species with different ecological characteristics (size, swimming speed, behaviour in the water column, etc.) and biogeographical environments. The results showed that there is a decreasing structural gradient across stock sizes from large pelagic species to more localised demersal species. This is linked to the fact that some demersal species such as the bogue (Boops boops) are constrained by the presence of geographical... Tipo: Text Palavras-chave: Otolithe; Forme; Stock halieutique; Descripteurs de Fourier; Température; Acides gras; Asymétrie directionnelle; Degrés-jours de croissance; Otolith; Shape; Fish stock; Fourier descriptors; Temperature; Fatty acids; Directional asymmetry; Growing degree days. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00598/70972/69201.pdf 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: https://archimer.ifremer.fr/doc/00588/70054/68017.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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