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  • 1990-1994  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Structure of monogenean populations, ectoparasites of the gilthead sea bream Sparus aurata (1992)
    Springer
    Marine biology 112 (1992), S. 43-47 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In the Western Mediterranean, the gilthead sea bream Sparus aurata Linnaeus, 1758 is parasitized by two gill monogeneans, Furnestinia echeneis (Wagener, 1857) Euzet and Audouin, 1959 (Monopisthocotylea: Diplectanidae) and Sparicotyle chrysophrii (van Beneden and Hesse, 1863) Mamaev, 1984 (Polyopisthocotylea: Microcotylidae). The spatial structure of these parasitic populations were studied on the French coast in the Gulf of Lions in 1984 and 1985. The relations between the two species forming this guild have been demographically analyses. Their distribution profiles are very similar and display some stability with time, although some increasing trends are perceptible in the spring. These two monogeneans are globally frequent, but always present in only moderate intensities in infrapopulations. Recruitment of F. echeneis is independent of that of S. chrysophrii. This mode of contamination limits massive and simultaneous infestations of a single host, and interspecific competition risks are consequently considerably reduced. Our results suggest these parasites can affect the size of a natural gilthead population to only a limited degree.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00349726
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Corrigendum (1990)
    Springer
    Marine biology 105 (1990), S. 352-352 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01344306
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    High-performance liquid chromatographic determination of saponins fromHedera helix L. using a light-scattering detector (1994)
    Springer
    Chromatographia 38 (1994), S. 183-186 
    Details
    ISSN: 1612-1112
    Keywords: Column liquid chromatographic ; Light-scattering detector ; Hedera helix L. ; Saponins
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary A high-performance liquid chromatographic method for the simultaneous determination of bidesmosidic and monodesmosidic saponins from the leaves ofHedera helix L. using a light-scattering detector is proposed. A satisfactory separation of the bidesmosidic and monodesmosidic saponins is obtained in 25 min on a reversed phase RP18 using an acetonitrile-water mixture as eluant. Hederasaponin C and α-hederin were found to be the major saponins of the leaves. The linearity of response, repeatability and reproducibility of the proposed method were tested. The detection limits for hederasaponin C and α-hederin were 0,1 and 0.05 μg/20 μl respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02290334
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    Paper (German National Licenses)
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