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	Provedor de dados 52 (3) Autor Costa,Rauquírio André Albuquerque Marinho da (3) Koening,Maria Luise (3) Macedo,Sílvio José de (1) Macêdo,Sílvio José de (1) Pereira,Luci Cajueiro Carneiro (1) Palavra-chave Culture (2) Alternative medium (1) Artemia salina (1) Feeding (1) Gyrodinium corsicum (1) Microalgae (1) Microalgae (Chrysophyceae) (1) Rhodomonas baltica (1) Secondary sewage (1) Urban secondary sewage (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2005 (1) 2004 (1) 1999 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Urban secondary sewage: an alternative medium for the culture of Tetraselmis chuii (Prasinophyceae) and Dunaliella viridis (Chlorophyceae) 52 Costa,Rauquírio André Albuquerque Marinho da; Koening,Maria Luise; Macedo,Sílvio José de. The effect of different concentrations (10, 20, 30 and 40%) of urban secondary sewage on the growth of Tetraselmis chuii (Prasinophyceae) and Dunaliella viridis (Chlorophyceae) was examined to verify the possibility of its use as an alternative culture medium for these species. Stocks and 700mL duplicate batch cultures were maintained under controlled laboratory conditions. 30% and 40% additions were the most efficient for the growth of both species. Statistical analysis of the adjusted growth (cell.mL-1) and biomass (µg chlorophyll-a.mL-1) curves performed using the Chi-square test (p<0.05) demonstrated significant differences between the nutritive medium f/2 and the 40% addition used for these two species. The results suggested that some of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Microalgae; Culture; Urban secondary sewage; Alternative medium. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000300016 Use of secondary sewage water as a culture medium for Chaetoceros gracilis and Thalassiosira Sp (Chrysophyceae) in laboratory conditions 52 Costa,Rauquírio André Albuquerque Marinho da; Koening,Maria Luise; Macêdo,Sílvio José de. Experiments were carried out in order to test the efficiency of additions of secondary sewage as a culture medium for Chaetoceros gracilis and Thalassiosira sp (Chrysophyceae) under laboratory conditions. These algae were cultivated in sea water with concentrations of 10%, 20%, 30% and 40% of wastewater. The results were compared with those obtained by the nutritive medium f2 of Guillard (1975). The best results in terms of cellular densities were observed at 40% additions. There were significant differences (significance levels of 5%) between the nutritive medium f2 and the 40% additions for both the species. Maximum cellular densities observed for all additions tested were, 4,125.00 x 10³ cells/ml for Chaetoceros gracilis on the ninth day and 834.00 x... Tipo: Info:eu-repo/semantics/article Palavras-chave: Microalgae (Chrysophyceae); Culture; Secondary sewage. Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000200011 Feeding adult of Artemia salina (Crustacea-Branchiopoda) on the dinoflagellate Gyrodinium corsicum (Gymnodiniales) and the Chryptophyta Rhodomonas baltica 52 Costa,Rauquírio André Albuquerque Marinho da; Koening,Maria Luise; Pereira,Luci Cajueiro Carneiro. Experiments were carried out on feeding performance and survival rates of adult Artemia salina exposed to no axenic strains of the dinoflagellate Gyrodinium corsicum and of the Chryptophyta Rhodomonas baltica. Filtration rates on R. baltica and G. corsicum varied from 3.35 to 7.14 ml.artemia-1.h-1 and from 2.97 to 15.86 ml.artemia-1.h-1, respectively. The ingestion rates observed for A. salina did not indicate any digestive dysfunction or physiological impairment for organisms fed on G. corsicum and their functional response were similar to those observed for other organisms like copepod fed on different food concentrations. Mortality rates oscillated from 2.5% to 100% when A. salina was fed on R. baltica or G. corsicum, respectively. Highest mortality... Tipo: Info:eu-repo/semantics/article Palavras-chave: Feeding; Artemia salina; Rhodomonas baltica; Gyrodinium corsicum. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000500011 Registros recuperados: 3 Primeira ... 1 ... Última

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