Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados ArchiMer (2) OceanDocs (1) Autor Buchet, Vincent (1) Fauvel, Christian (1) Gallis, J (1) Gardes, Lionel (1) Lebrun, A (1) Lemenn, F (1) Nunez, R (1) Ould Mohamed Fall, K. (1) Villanove, Philippe (1) Mais... Palavra-chave Ovogenèse (3) Oogenesis (2) Sexual maturity (2) Artificial insemination (1) Concentration spermatique (1) Cyste (1) Eau (1) Fellules folliculaires (1) Follicula cells (1) Follicule (1) Fécondation artificielle (1) Hydration (1) Ion accumulation (1) Ions (1) Maturation ovocytaire (1) Motilité du sperme (1) Octopus fisheries (1) Ombrine (1) Ovaries (1) Overripening (1) Mais... Tipo do documento Text (2) Journal Contribution (1) Ano 2001 (1) 2000 (1) 1983 (1) País France (2) Belgium (1) Idioma Francês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Compte rendu des premières expérimentations de fécondation artificielle chez l'ombrine, Sciaenops ocellatus : études préliminaires de la maturation finale des ovocytes et de la qualité du sperme ArchiMer Gardes, Lionel; Buchet, Vincent; Villanove, Philippe; Fauvel, Christian. Artificial insemination mastery in red drum, Sciaenops ocellatus, requires a first experimental step wOOng at getting basic biological data. Regarding males, a relation between optical density of the solution (OD) measured by spectrophotometry and sperm concentration (SC) has been established : OD O,161*SC + 0,119. Mean sperm concentration measured is 4,36.10 10 spz.mL-1. This study shows an influence of the solution of dilution on spermatozoa motility and its evolution during short term preservation. As far as females are concemed, the follow-up of final maturation through the observation of samples taken during reguIar strippings, seems to he a good technique to limit overripening and spontaneous liheration of ovules. Some artificial insemination trials... Tipo: Text Palavras-chave: Fécondation artificielle; Concentration spermatique; Motilité du sperme; Ovogenèse; Ovulation; Sur maturation; Ombrine; Sciaenops ocellatus.; Artificial insemination; Sperm concentration; Sperm motility; Oogenesis; Ovulation; Overripening; Red drum.; Sciaenops ocella/us. Ano: 2000 URL: http://archimer.ifremer.fr/doc/00366/47755/47801.pdf Etude de la gametogenese chez le poulpe Octopus vulgaris (Cuvier, 1797) OceanDocs Ould Mohamed Fall, K.. L’étude de la gamétogenèse chez le poulpe (Octopus vulgaris) a été réalisée par observations histologiques des gonades mâles et femelles. L’ovogenèse chez les céphalopodes est marquée par une dynamique de cellules folliculaires. Celles-ci, organisées en entités appelées follicules, vont se multiplier dans le tissu conjonctif de l’ovaire et migrer vers les ovocytes pour les entourer. Elles vont par la suite former des replis dans le cytoplasme et participer à la synthèse du vitellus. La production progressive de vitellus entraîne la rupture du follicule et la libération de l’ovocyte dans la cavité ovarienne. La maturation des cellules sexuelles mâles se fait de façon centripète dans des entités appelées cystes. Les spermatogonies, situées à la périphérie... Tipo: Journal Contribution Palavras-chave: Follicule; Poulpe; Ovogenesis; Ovogenèse; Spermatogenis; Cyste; Spermatogenèse; Fellules folliculaires; Ovocyte; Follicula cells; Octopus fisheries; Sexual maturity. Ano: 2001 URL: http://hdl.handle.net/1834/217 Etude preliminaire des equilibres de distribution de l'eau et des ions au cours de l'ovogenese de Solea solea ArchiMer Gallis, J; Lemenn, F; Lebrun, A; Nunez, R. During oogenesis of Solea solea L., gonadal changes in water, Na super(+) and K super(+) ions seem to be related to yolk protein incorporation by the oocyte. The decrease in oocyte water accumulation, associated with an increase in pericellular water accumluation and a decrease in K super(+) concentration occurs when vitellogenin enters the oocyte. Na super(+) concentration decreases in the oocyte at the end of the exogenous vitellogenesis when the first stages of the oocyte maturation take place. Water accumulation in the pericellular space during vitellogenesis allows the rapid transfer of water from this compartment into the oocyte during the terminal phase of maturation. However the total amount of gonadal water remains stable. Tipo: Text Palavras-chave: Solea solea; Soleidae; Pisces; Hydration; Water content; Ion accumulation; Sexual maturity; Ovaries; Oogenesis; Solea; Maturation ovocytaire; Ovogenèse; Eau; Ions. Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1231.pdf Registros recuperados: 3 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco