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  • Caribbean  (2)
  • Aplysia dactylomela  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Aplysia sea hare assimilation of secondary metabolites from brown seaweed,Stypopodium zonale (1989)
    Springer
    Journal of chemical ecology 15 (1989), S. 677-683 
    Details
    ISSN: 1573-1561
    Keywords: Sea hare ; Aplysia dactylomela ; Stypopodium zonale ; mollusk ; brown seaweed ; Phaeophyta ; diterpene-quinone ; metabolite transfer ; biotransformation ; 3-ketoepitaondiol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract JuvenileAplysia dactylomela were found feeding in abundance on the tropical brown algaStypopodium zonale, a seaweed previously shown to contain numerous unique terpene-quinone natural products. Lipid extracts of these herbivorous mollusks were shown by TLC and HPLC-NMR analyses to contain appreciable quantities of twoS. zonale metabolites as well as one new but closely related compound. Spectroscopic analyses of the new compound in concert with functional group modifications identified this new compound as 3-keto epitaondiol. A careful analysis of the seaweed extract failed to locate this ketone, and thus, it most likely represents anAplysia-biotransformed compound. This is the first clear reported observation of metabolite transfer between an alga of the phylum Phaeophyta and a sea hare.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01014710
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  • 2
    Electronic Resource
    Electronic Resource
    Dynamics of antibacterial activity in three species of Caribbean marine algae as a function of habitat and life history (1996)
    Springer
    Hydrobiologia 326-327 (1996), S. 457-462 
    Details
    ISSN: 1573-5117
    Keywords: antimicrobial activity ; Caribbean ; seaweed
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Antibacterial activity of lipid extracts from three species of Caribbean marine algae, Spyridia filamentosa, S. hypnoides and Wrangelia bicuspidata was evaluated monthly for one year. Activities were tested for whole plant extracts and TLC-separable zones. Whole plant extracts demonstrated monthly variability in activity with respect to both habitat and life history phase in addition to periods of similarity. No consistency was seen regarding activity against different microorganisms. TLC analyses of the extracts led to the identification of twenty-seven chromatographically distinct regions (TLC zones) each from both S. filamentosa and S. hypnoides and twenty-five from W. bicuspidata, which demonstrated antimicrobial activity. Between these species, twenty-one active TLC zones appeared to be shared based on their similar chromatographic characteristics. Individual TLC zones also demonstrated variable activity throughout the sampling period with respect to habitat and life history phase as well as periods of similarity. Algal antibiosis in these species is recognized as being highly complex, involving numerous chemical compounds, each of which is highly variable in terms of its presence and/or probable concentration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00047846
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  • 3
    Electronic Resource
    Electronic Resource
    Antibiotic activity of lipid-soluble extracts from Caribbean marine algae (1987)
    Springer
    Hydrobiologia 151-152 (1987), S. 463-469 
    Details
    ISSN: 1573-5117
    Keywords: seaweed ; antimicrobial activity ; Caribbean
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00046168
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