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Effect of particulate organic carbon on heterotrophic bacterial populations and nitrification efficiency in biological filters ArchiMer
Michaud, Luigi; Blancheton, Jean-paul; Bruni, V; Piedrahita, Raul.
Competition between heterotrophic and nitrifying bacteria is of major practical importance in aquaculture biofilter design and operation. This competition must be understood to minimize the negative impact of heterotrophic bacteria on an aquaculture system. On the other hand, the heterotrophic population is suspected of having a positive effect against pathogenic bacteria. Little information is available on the bacterial communities present within aquaculture systems, except for nitrifying bacteria, but a combination of traditional aquacultural engineering research methods and novel microbiological techniques offers new opportunities for the study of these communities. The heterotrophic bacterial population activity and the nitrification efficiency of a...
Tipo: Text Palavras-chave: Recirculating aquaculture system; Particulate organic matter; Heterotrophic bacteria; Nitrification.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1553.pdf
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Isolement et identification de vibrions halophiles d'une station experimentale de mariculture ArchiMer
Bruni, V; Crisafi, E; Maugeri, T; Zaccone, R.
110 Vibrio strains were isolated, at various times of the year, from samples of sea-water supply, breeding-tank water and discarded fish used as food at the breeding stations. From the results obtained by the biochemical and cultural tests, it was possible to identify most of the isolated strains as Vibrio anguillarum . Strains with intermediate characteristics, above-all positive saccharose, proved to be numerous. The authors discuss the occurrence, in particular environments such as those being studied, of atypical or intermediate vibrio strains which are difficult to classify.
Tipo: Text Palavras-chave: Vibrio; Microbiological culture; Bacteria; Food; Minced products; Fish ponds; Sea water; Identification; Marine aquaculture; Bacteria collecting devices; Microbiological analysis.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-997.pdf
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