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  • 1
    Electronic Resource
    Electronic Resource
    Unusual bloom of star-like prosthecate bacteria and filaments as a consequence of grazing pressure (1989)
    Springer
    Microbial ecology 17 (1989), S. 137-141 
    Details
    ISSN: 1432-184X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In seawater used for shrimp aquaculture in French Polynesia, the grazing of small bacteria (rods and coccoids) allowed the growth ofAncalomicrobium cells (to more than 2×106 cells ml−1) and large filaments 〉 10μm in length (5×106 cells ml−1). Their contribution to the increase in total bacterial number after grazing was 27.8 and 9.8%, respectively. These large bacteria are not grazed on by microflagellates, but are available for mesoplankton larvae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02011848
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  • 2
    Electronic Resource
    Electronic Resource
    Development of a heterotrophic bacterial community within a closed prawn aquaculture system (1985)
    Springer
    Microbial ecology 11 (1985), S. 353-369 
    Details
    ISSN: 1432-184X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The quantitative and qualitative development of a heterotrophic bacterial community in seawater was studied throughout an experimental rearing of the prawnPenaeus japonicus. The maturation of juvenile prawns had been carried out for 8 months in aerated tanks of seawater without any water renewal. Bacteria (337 strains) were isolated from seawater, which had been sampled at different times. Samples from one of the mussels used to feed the prawns and from the digestive tract of one prawn each supplied 40 more strains. 101 tests were performed on each strain, and cluster analysis showed the existence of 4 different groups containing 95% of the sampled strains. Characteristics of the various samples and groups were described in terms of ecotype diversities, catabolic potentialities, nutritional capacities, and morpho-physiological groups. Until nitrification attained a steady state, the heterotrophic community clearly decreased in number and was composed mostly of auxotrophic bacteria (pseudomonads andMoraxella-Acinetobacter groups). These bacteria needed growth factors and were unable to use amino acids (group B). At the end of the experiment (7 months) the bacteria isolated from the water were vibrios and enterobacteria, as were those isolated from the prawn and the mussel. They clustered together in group A. The number of strains that clustered with those of natural seawater (group E) decreased steadily during the experimental period.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02016817
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  • 3
    Electronic Resource
    Electronic Resource
    Rates of nitrification and carbon uptake in the Rhône River plume (northwestern Mediterranean Sea) (1993)
    Springer
    Microbial ecology 26 (1993), S. 21-28 
    Details
    ISSN: 1432-184X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Nitrification rates were measured along a salinity gradient in the Rhône River estuary, using specific inhibitors (allylthiourea and chlorate) coupled with the measurement of change in nitrite concentration and inorganic carbon uptake by nitrifiers. Rates of ammonium and nitrite oxidation were similar up to 15 practical salinity units (from 1 to 2 μmol N oxidized liter-1 day-1). For higher salinities, nitrite and ammonium oxidation rates were 0.14 and 0.23 μmol N oxidized liter-1 day-1, respectively. Ammonium oxidizers assimilated 19−150 × 10−3 μmol C liter-1 day-1, while nitrite oxidizers fixed 4.8−72.6 × 10−3 μmol C liter-1 day-1. The amounts of nitrogen oxidized and C incorporated demonstrated a linear correlation (r 2 〉 0.99). The ratio of N oxidized to C incorporated ranged between 14.3 to 12.3 for ammonium oxidizers, and between 31.6 and 29 for nitrite oxidizers, the lower values being measured in seawater.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00166026
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  • 4
    Electronic Resource
    Electronic Resource
    Composition en bases de l'ADN et position taxonomique de bactéries marines fermentant le glucose, du genre Vibrio et des genres voisins (1973)
    Springer
    Archives of microbiology 90 (1973), S. 131-140 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé L'analyse du GC% des souches marines appartenant au genre Vibrio confirme leur classement préalable, obtenu selon la méthode adansonnienne. La comparaison, tant par la valeur de leur GC% que par leur similitude phénotypique, des genres Photobacterium et Beneckea avec le genre Vibrio montre que la différenciation de ces trois genres n'est pas très nette. Le genre Vibrio se subdivise en quatre groupes de souches. Un premier groupe comprend les souches marines libres. Le second groupe rassemble les souches marines parasites des animaux poïkilothermes. Le troisième groupe est composé de souches, capables de parasiter les animaux poïkilothermes comme les animaux homéothermes. Enfin, le dernier groupe est constitué, contrairement aux trois premiers, par des souches ne nécessitant pas de NaCl pour croître. On constate que ces quatre groupes ont une localisation écologique différente.
    Notes: Summary DNA base composition of marine strains of genus Vibrio corroborate the results obtained by the adansonian method of classification. Comparisons of phenotypic and GC% values of genera Photobacterium and Beneckea with the genus Vibrio show that differentiation between these three genera is not clear. Genus Vibrio can be separated in four groups. The first contains free-living marine strains. The second group includes the marine strains pathogenic to poïkilothermic animals. The third group is composed of strains pathogenic to poïkilothermic and homeothermic animals. The last group is made up of strains which, contrary to the other groups, have shown no specific requirement of sodium for growth. We ascertain that each group has a typical ecologic localization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00414515
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  • 5
    Electronic Resource
    Electronic Resource
    Hybridation des acides déoxyribonucléiques de certaines bactéries marines vibrioïdes (1975)
    Springer
    Archives of microbiology 104 (1975), S. 245-247 
    Details
    ISSN: 1432-072X
    Keywords: Vibrioïd Marine Bacteria ; DNA-DNA Hybridization ; Classification ; Vibrio ; Photobacterium ; Beneckea
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Les relations génotypiques établies par les hybridations ADN-ADN confirment les résultats obtenus par une analyse phénotypique antérieure de certaines bactéries marines vibrioïdes. Ces souches sont proches de l'espèce Photobacterium fischeri, et n'appartiennent pas au genre Vibrio. L'ensemble des bactéries vibrioïdes marines exigeant du Na+ pour leur croissance est génotypiquement très hétérogène.
    Notes: Abstract The genotypic relationships established by DNA/DNA hybridization in vitro confirm the results obtained by earlier phenotypic analyses of certain vibrio-like marine bacteria. These strains are closely related to the species Photobacterium fischeri, and do not belong to the genus Vibrio. The group of marine, vibrio-like bacteria that require Na+ for growth is genotypically very heterogeneous.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00447332
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  • 6
    Electronic Resource
    Electronic Resource
    Étude comparée de vibrions de haute mer et de leurs homologues non marins: biochimie, nutrition et taxonomie numérique (1971)
    Springer
    Archives of microbiology 77 (1971), S. 127-139 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Sept souches ont été isolées d'eau de mer (Atlantique Nord) par 400 m de fond. 17 souches de référence (14 Vibrio et 3 Aeromonas) provenant des collections CIP et NCMB ont été également étudiées. 215 caractères biochimiques et nutritionnels sont définis pour chaque souche et les coefficients de similitude sont calculés sur ordinateur. Le dendrogramme représente l'assemblage des souches par liaisons pondérées. Les sept souches marines sauvages sont des biotypes d'une même espèce de Vibrio. Ces souches sont très semblables à V. marinus et V. noctiluca également isolées de l'eau de mer. Ces 9 germes forment un groupe dont le spectre nutritionnel est beaucoup plus étroit que celui des vibrions pathogènes et de plus, nécessitent une température inférieure à 20° C et une salinité comprise entre 1% et 7% de NaCl. V. anguillarum et V. piscium semblent appartenir à une même espèce; V. proteus et V. metschnikovii sont également très proches l'un de l'autre.
    Notes: Summary Seven strains were isolated from deep-sea atlantic seawater (4,000 m). Seventeen reference strains (14 Vibrio and 3 Aeromonas) coming from CIP and NCMB collections were added. 215 biochemical and nutritional features were determinated for each isolate and similarity coefficients were obtained by computer analysis. The dendrogram was obtained by moderate linkage. The seven marine wild strains are biotypes of one species of Vibrio. V. marinus and V. noctiluca are close to these strains; they have also been isolated from seawater. The numerical range of organic compounds utilisable as sole sources of carbon and energy by the “seawater group” of these bacteria is smaller than that of the pathogenic group of strains. Specific conditions of temperature and salinity are required by the marine bacteria. V. anguillarum and V. piscium seem to be the same species; also V. proteus and V. metschnikovii are grouped relatively together.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00408605
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  • 7
    Electronic Resource
    Electronic Resource
    Statistical sampling of bacterial strains and its use in bacterial diversity measurement (1982)
    Springer
    Microbial ecology 8 (1982), S. 61-69 
    Details
    ISSN: 1432-184X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The cultural bacterial strains of two sediment samples, i.e., 260 strains, were submitted to numerical taxonomy to determine “ecological profiles.” From these profiles several calculations of bacterial diversity were done with increasing number of strains (between 10 and 130). Studying 20–30 strains was sufficient to obtain a diversity of bacterial community. Number of tests could be reduced from 62 to 30 without any influence on bacterial diversity. Similarity between studied tests was shown by using numerical taxonomy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02011462
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  • 8
    Electronic Resource
    Electronic Resource
    Cross frontal variability in hydrological and biological structures observed in a river plume area (Rhône mouth, NW Mediterranean Sea) (1996)
    Springer
    Hydrobiologia 324 (1996), S. 131-140 
    Details
    ISSN: 1573-5117
    Keywords: plume ; variability ; dissolved matter ; particles ; bacteria ; flagellates ; zooplankton
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In the Rhône River plume area, NH inf4 + , DFAA, seston particles, bacteria, flagellates and mesozooplankton were studied over 24 hours at a fixed station. Variations of both abiotic and biotic variables demonstrated rapid changes in vertical structure, from stratified towards mixed. This evolution was related to hydrodynamical changes caused by wind. Strong variability resulting from hydrological changes was apparent in surface water where the plume edge crossed the station as evident by sharp increase in particle volume (20–25 µm ESD range), NH inf4 + (from 9 to 12 µM) and DFAA (from 1 to 3 µM) concentrations. This frontal ecosystem favored fast growing organisms such as bacteria of which densities reached 19 and production 0.22–0.26 µg C l−1 h−1, and flagellates which showed densities of 1.5 to 2 µg C l−1. Among DFAA, the relative concentration (mole %) of serine increased from 13.3% in the plume water to 44–45% in the front system. The biomass and feeding activity of zooplankton also increased at the plume boundary.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00018174
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  • 9
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    Heterotrophic bacterial production in the Cretan Sea (NE Mediterranean) (2000)
    Elsevier
    Details
    Publication Date: 2000-08-01
    Print ISSN: 0079-6611
    Electronic ISSN: 1873-4472
    Topics: Geosciences , Physics
    Published by Elsevier
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  • 10
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    Dynamique Spatio-temporelle du Bactérioplancton d'une aire marine Méditerranéenne perturbée par l'effluent urbain de l'agglomération marseillaise (1987)
    Elsevier
    Details
    Publication Date: 1987-01-01
    Print ISSN: 0141-1136
    Electronic ISSN: 1879-0291
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Published by Elsevier
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