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Registros recuperados: 6
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Seasonal variation of the effect of high-carbohydrate and high-protein diets on the intermediate metabolism of Parastacus brasiliensis (Crustacea, Decapoda, Parastacidae) maintained in the laboratory Iheringia, Sér. Zool.
Dutra,Bibiana K.; Silva,Karina M. da; Zank,Caroline; Conter,Maria R.; Oliveira,Guendalina T..
The goal of this study was to evaluate the effect of a high-carbohydrate diet (HC) and a high-protein diet (HP) on the metabolism of the crayfish Parastacus brasiliensis (Von Martens, 1869), collected in different seasons and maintained in the laboratory for 15 days. Crayfish were collected monthly from January 2002 to January 2004 at São Francisco de Paula, Southern Brazil, in Guarapirá stream. In the laboratory, the animals were kept submerged in aquariums under controlled conditions. They were fed ad libitum, for 15 days with either a HC or HP diet. At the end of this period, haemolymph samples were collected, as were hepatopancreas, gills, and abdominal muscle that were removed for determination of glycogen, free glucose, lipids, and triglycerides. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crayfish; Experimental culture; Diet; Metabolism; Seasonality.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000400003
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Grossissement des juveniles de palourdes "Ruditapes decussatus" (l., 1758), sur l’estran de Zarat (golfe de Gabès, Tunisie), dans des conditions expérimentales. OceanDocs
Zouari, M.; Hitonori, N.; Lymayem, Y.; M'Rabet, R.; Dhraief, M.N.; Missaoui, H.; Guergej, H.; Kraiem, M.M..
Le potentiel de grossissement de la palourde Ruditapes decussatus (L. 1758), élevée dans des poches de filet de 1 m2 de surface, a été évalué sur l’estran de Zarat (golfe de Gabès) pour la période de juillet 2006 à novembre 2007. Dans une première expérience, trois niveaux de la marée, représentant des chenaux de drainage de l’eau, existants entre la ligne de marée haute et celle de marée basse, ont été comparés sur une durée de 16 mois. Chacun des niveaux a été représenté par un triplicata de sacs de 150 individus. Dans une seconde expérience, trois densités de mise en charge différentes ont été comparées sur une durée de 17 mois. Pour cela, deux sacs de 100 individus chacun et deux autres de 200 individus chacun ont été alignés à l’expérience précédente,...
Tipo: Journal Contribution Palavras-chave: Clam culture; Comparative studies; Environmental conditions; Estuaries; Experimental culture; Growth; Growth rate; Marine aquaculture; Marine molluscs; Population density; Rearing; Stocking density; Clams.
Ano: 2009 URL: http://hdl.handle.net/1834/4495
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Tasa de crecimiento de Anadara tuberculosa (Sowerby, 1833) (Bivalvia: Arcidae) en la reserva ecológica manglares Cayapas-Mataje (REMACAM): Un análisis basado en sistemas de cajas suspendidas OceanDocs
Flores, L..
La tasa de crecimiento y el incremento neto de crecimiento de Anadara tuberculosa fue estudiada por medio de muestreos mensuales en sistemas de cultivo entre el 2002 y 2003 en la Comunidad El Bajito en la REMACAM. Ocho cajas suspendidas fueron utilizadas, cuatro con conchas entre los 30 y 34.9 mm y cuatro con conchas entre los 35 y 39.9 mm. No se encontraron diferencias significativas entre cada uno de los sistemas de acuerdo a cada uno de los rangos de tallas utilizados, lo que permitió establecer incrementos netos entre los 10.17 a 11.99 mm y de 8.55 a 10.68 mm, respectivamente. El periodo de mayor crecimiento de A. tuberculosa fue de octubre hasta abril. Se estimaron tasas de crecimiento mensual que variaron de 0.01 a 1.94 mm mes"-1 en el primer caso y...
Tipo: Journal Contribution Palavras-chave: Growth rate; Shells; Experimental culture.
Ano: 2010 URL: http://hdl.handle.net/1834/4838
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Crecimiento y desempeño general de juveniles silvestres de mero guasa Epinephelus itajara (Lichtenstein) Mantenidos en jaulas flotantes bajo diferentes condiciones de cultivo OceanDocs
Botero, J.; Ospina, J.F..
An experimental culture trial of wild juveniles of jewfish Epinephelus itajara was conducted in two different places in the north coast of Colombia in order to evaluate the growth rate of the species and its tolerance to captivity conditions. Two different groups of fish were evaluated in each place, one fed on an artificial diet and the other on trash fish. All fish were held in floating cages for periods ranging from 63 to 89 days. Results showed excellent individual daily weight increase (6,83 and 12,4 g/day) and specific growth rate (1,4 y 0,96 %/day) for fish fed on trash fish in both places but conversion ratio was too high and inadequate (9,01 and 9,97). Trials with the artificial diet gave negative results because the fish didn’t accept the pellets...
Tipo: Journal Contribution Palavras-chave: Experimental culture; Floating cages; Growth; Growth; Http://aims.fao.org/aos/agrovoc/c_3394.
Ano: 2003 URL: http://hdl.handle.net/1834/3072
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Evaluation de la capacité regénèratrice de l’algue rouge "Gracilaria verrucosa" (hudson) papenfuss du lac de bizerte (tunisie septentrionale) OceanDocs
Ksouri, J.; Mensi, F.; Salhi-Hamza, K..
Afin d’évaluer le potentiel de régénération de Gracilaria verrucosa du lac de Bizerte, une culture expérimentale, in situ sur cordes tendues sur le substrat, a été mise en place à partir de boutures de 200 g. Au terme de quatre mois de culture, de février à mai 2003, les cordes ont été soumises à une, deux, trois ou quatre coupes. L’analyse statistique montre que la meilleure situation est représentée par les touffes qui n’ont subi qu’une seule coupe à la fin du mois de mai; dans ce cas, ces touffes ont un poids final de 1771,4 g et un taux de croissance spécifique de 1,8.
Tipo: Journal Contribution Palavras-chave: Aquaculture systems; Cutting; Experimental culture; Regeneration; Seaweed culture; Gracilaria verrucosa; Http://aims.fao.org/aos/agrovoc/c_49675.
Ano: 2006 URL: http://hdl.handle.net/1834/4253
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Enrichment strategies for <i>Artemia</i> using emulsions providing different levels of n-3 highly unsaturated fatty acids OMA
Han, K.; Geurden, I.; Sorgeloos, P..
Three separate enrichment trials compared the <i>n</i>-3 highly unsaturated fatty acid (HUFA) levels in <i>Artemia franciscana</i> nauplii (Great Salt Lake, USA) as a function of the <i>n</i>-3 HUFA level in the emulsion (30% and 50%), the enrichment dose (0.05, 0.1, 0.2, 0.3 and 0.4 g1-1) and the degree of dilution of a high HUFA emulsion with an <i>n</i> -3 HUFA-free emulsion (100/0, 50/50, 25/75, 12.5/87.5 and 0/100, HUFA-rich/HUFA-free, w/w). The standard emulsions were distributed by the International Council for the Exploration of the Sea, Working Group on the Mass Rearing of Juvenile Fish (ICES). After the 48-h enrichment, the content of docosahexaenoic acid (DHA), eicosapentaenoic acid EPA) and total...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Experimental culture; Feeding experiments; Polyunsaturated fatty acids; Zooplankton culture; Artemia; Artemia franciscana.
Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=42
Registros recuperados: 6
Primeira ... 1 ... Última
 

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