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| Persoone, G.; Morales, J.; Verlet, H.; De Pauw, N.. |
| Since turbulence is an important factor for the growth of microscopic algae, the effect of mixing intensity and mixing time, has been assessed by means of air-lift pumps as an alternative technology for the agitation of algal cultures. Batch culture experiments in enriched sea water were carried out indoors with <i>Chlorella</i> in 100 liter tanks and outdoors with natural phytoplankton populations in 70 m³ tanks. The respective culturing depths in these tanks were 25 and 180 cm. The role of the mixing was also evaluated against that of the pH regulation of the cultures. Mixing with air-lift pumps increased the algal growth rate significantly in comparison to non-agitated cultures. The yields were also much higher (up to 30%) in mixed than in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Algae culture. |
| Ano: 1980 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3692 |
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| Hernández-Zulueta, J.; Leal, S.; Lugioyo, G.M.; Loza, S.; Curbelo, R.; Caballero, V.M.. |
| El presente estudio de las siguientes especies de microalgas marinas tuvo como objetivo identificar y determinar la actividad antibacteriana de la microbiota presente en los cultivos de las siguientes especies de microalgas marinas: Chaetoceros ceratosporum, Chaetoceros muelleri, Thalassiosira sp., Thalassiosira weisflogii, Amphora sp., Navicula sp. y Tetraselmis suecica, especies que se utilizan en la alimentación de animales acuáticos. Se estudiaron las características morfológicas, culturales y tintoriales de las cepas aisladas, así como las características fisiológicas y bioquímicas. Para la clasificación se utilizó el Manual de Bergey (Krieg & Holt, 1984; Sneath et al., 1986). La actividad antibacteriana se determinó mediante el método de difusión... |
| Tipo: Journal Contribution |
Palavras-chave: Check lists; Isolation (genetics); Algae culture. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4651 |
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| Palacios, Mauricio; Mansilla, Andrés. |
| El objetivo del presente estudio consiste en describir y evaluar el desarrollo de gametófitos y esporófitos de M. pyrifera, en condiciones de laboratorio. Esporofilas fértiles provenientes de poblaciones naturales de Tierra del Fuego (53°18´11.4´´S; 70°23´30.5´´W) fueron sometidas a esporulación, obteniéndose una solución homogénea de zoosporas, las cuales fueron inoculadas en portaobjetos. El experimento se llevó a cabo en una cámara de cultivo con temperatura de 8 ± 2 °C, fotoperíodo de12:12 e intensidad luminosa de 40 μEm-2s-1, como medio de cultivo se utilizó agua de mar filtrada enriquecida con Medio Provasoli, (20 ml lt-1) renovado semanalmente. Los cultivos fueron monitoreados cada 3 días, desde el estado de zoosporas hasta la obtención de... |
| Tipo: Journal Contribution |
Palavras-chave: Algae culture; Macrocystis pyrifera. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/4338 |
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| De Pauw, N.; Verlet, H.; De Leenheer, L. Jr.. |
| The feasibility was tested of maintaining long-term semi-continuous or continuous cultures of marine planktonic algae such as <i>Chlorella saccharophila</i> (Krüger) Migula and also algae developing naturally in enriched seawater and which could be suited as food organisms. Diluted aerated swine manure was used as the sole nutrient source for the algae. About 5 liter aerated swine manure per square meter per day x dilution rate per day seemed to satisfy the need of the culture. In view of a possible utilization of thermal effluents, a comparison was made between algal growth in heated and unheated cultures. The experiments were carried out in 250 liter tanks outdoor, equipped with airlift pump. Almost independent of temperature, the algal dry... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Algae culture. |
| Ano: 1980 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3657 |
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| Guerra Aznay, M.. |
| Para evaluar el extracto líquido de humus de lombriz roja californiana Eisenia foetida como un nuevo medio alternativo de cultivo de las microalgas Tetraselmis tetrathele y Chaetoceros muelleri, se probaron cuatro diluciones (EH50, EH200, EH350 y EH500 mL) empleando como control al medio f/2 Guillard (MG). Las concentraciones celulares de T. tetrathele no mostraron diferencias (p>0.05) entre el tratamiento MG y el tratamiento EH200 mL. Los valores medios ± DS fueron de 1730 ± 5.8 x 103 cel·ml –1 (EH200 mL) y de 1750 ± 4.5 x 103 cel·ml –1 (MG). Para C. muelleri se obtuvieron valores inferiores al patrón en todas las diluciones del biofertilizante líquido, por lo que fueron evaluadas dos diluciones más concentradas (EH550... |
| Tipo: Theses and Dissertations |
Palavras-chave: Humus; Shrimp culture; Algae culture. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4231 |
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| Persoone, G.; Claus, C.. |
| The controlled culture of larvae of molluscs of commercial importance (oysters, clams, etc.) till spatfall implies the daily production of substantial volumes of suitable species of microscopic algae. For economic reasons, industrial mollusc hatcheries cannot, however, upscale the very expensive indoor algal production to fulfill the increasing food demands of the growing spat. As too early transplantation of the postlarvae to the natural environment results in various technological and biological problems, the intermediate semi-controlled "nursery" culturing of the spat up to a few centimeters in length is presently more and more preconized. The different technologies utilized for nursery culturing are reviewed with special emphasis on the major problem:... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Algae culture; Mollusc culture. |
| Ano: 1980 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3691 |
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| De Pauw, N.. |
| The nutritional value of various foods and diets for juvenile bivalves is reviewed and commented. From all foods tested specific microalgues seem to be the most suited for young bivalves. Presently, serious alternatives for replacing living algae by inert, artificial feeds are practically inexistent, though research efforts are made in this direction. The various microalgae production-systems used for feeding juvenile bivalves are also reviewed. A literature survey and the COST inquiry held in 1979 by our laboratory revealed that nearly all commercial enterprises involved in nursery rearing of bivalve molluscs in Europe utilize natural phytoplankton as food. Culturing of the postlarvae is performed either <i>in situ</i> (in the sea) or in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Algae culture; Food; Mollusc culture; Bivalvia. |
| Ano: 1981 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3406 |
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| Valdivia Acosta, A.. |
| Se investiga la variación espacial y estacional de la composición por especies, cubrimiento y biomasa de las asociaciones de algas. Dos sitios contaminados correspondientes a las zonas adyacentes a la desembocadura de la Bahía de La Habana y el río Almendares fueron analizados y se comparan con dos sitios de referencia en Miramar. En cada sitio se estudian los biotopos de plano rocoso y veril inferior. Los muestreos se realizaron en los meses de febrero, mayo y agosto del año 2002. La composición por especies fue analizada mediante frecuencias de aparición. La cobertura vegetal se estima mediante censo visual utilizando un cuadrante de 0.0625 m2 . Se definen ocho categorías de cubrimiento: seis grupos morfofuncionales, césped de algas y... |
| Tipo: Theses and Dissertations |
Palavras-chave: Variations (space); Algae culture; Biomass. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/5552 |
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