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	Provedor de dados ArchiMer (2) Autor Avila De Melo, Antonio (1) Cabral, Henrique (1) Chantre, Celina (1) Daverat, Françoise (1) De Pontual, Helene (1) Elleboode, Romain (1) Fablet, Ronan (1) Gonçalves, Patricia (1) Mahe, Kelig (1) Murta, Alberto (1) Mais... Palavra-chave Fish otoliths (2) Bayesian labeling (1) Elliptic Fourier analysis (1) Gaussian mixture models (1) Hidden Markov models (1) Individual life histories (1) Marine science application (1) Morphometry analysis (1) Otolith microchemistry (1) Otoliths image analysis (1) Mais... Tipo do documento Text (2) Ano 2017 (1) 2007 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Blue whiting otoliths pair’s symmetry side effect ArchiMer Gonçalves, Patricia; Mahe, Kelig; Elleboode, Romain; Chantre, Celina; Murta, Alberto; Avila De Melo, Antonio; Cabral, Henrique. Otoliths are paired calcified structures located in the inner ear of the teleost fishes. Fisheries scientists have been using the otoliths for a variety of applications as fish ageing, species identification and also species interaction. The symmetry between left and right otoliths is considered species dependent. The application of analysis techniques on otoliths images has been increasing in recent years. The diagnosis on otoliths symmetry as a species characteristic is currently being done. It is expected that the otolith surface (distal versus proximal) used to collect images should have no influence on the symmetry results. The goal of this study is to investigate if the otolith position (distal versus proximal) when analyse images has influence in... Tipo: Text Palavras-chave: Otoliths image analysis; Morphometry analysis; Fish otoliths; Marine science application; Elliptic Fourier analysis. Ano: 2017 URL: http://archimer.ifremer.fr/doc/00388/49887/50448.pdf Unsupervised Bayesian reconstruction of individual life histories from otolith signatures: case study of Sr : Ca transects of European eel (Anguilla anguilla) otoliths ArchiMer Fablet, Ronan; Daverat, Françoise; De Pontual, Helene. The reconstruction of individual life histories from chemical otolith measures is stated as an unsupervised signal-processing issue embedded in a Bayesian framework. This computational methodology was applied to a set of 192 European eel (Anguilla anguilla) otoliths. It provided a robust and unsupervised analysis of the individual chronologies of habitat use (either river, estuary, or coastal) from Sr:Ca measures acquired along an otolith growth axis. Links between Sr:Ca values and habitat, age, and season and the likelihood of the transitions from one habitat type to another were modelled. Major movement characteristics such as age at transition between habitats and time spent in each habitat were estimated. As a straightforward output, an unsupervised... Tipo: Text Palavras-chave: Otolith microchemistry; Hidden Markov models; Gaussian mixture models; Bayesian labeling; Fish otoliths; Individual life histories. Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2533.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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