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	Provedor de dados ArchiMer (2) Autor Cotel, Pascal (2) Achury, Alina (1) Annasawmy, Pavanee (1) Brehmer, Patrice (1) Cherel, Yves (1) Gerlotto, François (1) Laurent, Charline (1) Lebourges-dhaussy, Anne (1) Marsac, Francis (1) Ménard, Fréderic (1) Romanov, Evgeny V. (1) Roudaut, Gildas (1) Samb, Birane (1) Ternon, Jean-francois (1) Mais... Palavra-chave Acoustics (1) Behaviour (1) Diel cycle (1) Echo type (1) In situ observations (1) Micronekton (1) Phenotypic expression (1) Schooling (1) Seamount (1) Seamount-associated fauna (1) Small pelagic fish (1) South-western Indian Ocean (1) Mais... Tipo do documento Text (2) Ano 2019 (1) 2007 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Schooling behaviour of small pelagic fish: phenotypic expression of independent stimuli ArchiMer Brehmer, Patrice; Gerlotto, François; Laurent, Charline; Cotel, Pascal; Achury, Alina; Samb, Birane. We compared echo sounder measurements of fish schools on Venezuelan and Senegalese coastal shelves. In both areas Sardinella aurita was the predominant aggregative species; the stocks are known to be genetically independent. Persistent school typology is described by analysing 7 acoustic surveys in Venezuela and comparing with pioneer observations in Senegal. The echo types encountered in both countries were comparable, with S. aurita and their associated species having comparable schooling behaviour. School morphology appears to be more related to species than to global characteristics of their ecosystems, as fish school descriptors were similar for both stocks. Nevertheless, S. aurita may adopt different school morphologies. Differentiation between day... Tipo: Text Palavras-chave: Small pelagic fish; Schooling; Phenotypic expression; In situ observations; Echo type; Diel cycle; Behaviour. Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2536.pdf Micronekton distributions and assemblages at two shallow seamounts of the south-western Indian Ocean: Insights from acoustics and mesopelagic trawl data ArchiMer Annasawmy, Pavanee; Ternon, Jean-francois; Cotel, Pascal; Cherel, Yves; Romanov, Evgeny V.; Roudaut, Gildas; Lebourges-dhaussy, Anne; Ménard, Fréderic; Marsac, Francis. Micronekton distributions and assemblages were investigated at two shallow seamounts of the south-western Indian Ocean using a combination of trawl data and multi-frequency acoustic visualisation techniques. La Pérouse (∼60 m) seamount is located on the outskirts of the oligotrophic Indian South Subtropical Gyre province with weak mesoscale activities and low primary productivity all year round. The “MAD-Ridge” seamount (thus termed in this study; ∼240 m) is located in the productive East African Coastal (EAFR) province with high mesoscale activities to the south of Madagascar. This resulted in higher micronekton species richness at MAD-Ridge compared to La Pérouse. Resulting productivity at MAD-Ridge seamount was likely due to the action of mesoscale... Tipo: Text Palavras-chave: Micronekton; Seamount; South-western Indian Ocean; Acoustics; Seamount-associated fauna. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00510/62135/66368.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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