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  • 1
    Electronic Resource
    Electronic Resource
    Transfer of secondary metabolites from the spongesDysidea fragilis andPleraplysilla spinifera to the mantle dermal formations (MDFs) of the mudibranchHypserlodoris webbi (1994)
    Springer
    Cellular and molecular life sciences 50 (1994), S. 510-516 
    Details
    ISSN: 1420-9071
    Keywords: Nudibranch ; Hypselodoris ; sponge ; Dysidea ; Pleraplysilla ; Microciona ; furanosesquiterpenoids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The opisthobranch molluscHypselodoris webbi is able to select, among its potential preys, sponges chemically rich in furanosesquiterpenoids. The sequestered secondary metabolites act as defensive allomones against predators and are accumulated in some dorsal glands (MDFs). This transfer from sponges to MDFs has been proven by maintainingH. webbi together with some selected sponges in an aquarium for a prolonged period.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01920760
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Defensive strategy of twoHypselodoris nudibranchs from Italian and Spanish coasts (1991)
    Springer
    Journal of chemical ecology 17 (1991), S. 625-636 
    Details
    ISSN: 1573-1561
    Keywords: Opisthobranch ; nudibranch ; Hypselodoris webbi ; Hypselodoris ; villafranca ; sponge ; Dysidea fragilis ; chemical defense ; longifolin ; nakafuran-9 ; isotavacfuran
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Hypselodoris nudibranchs from different geographic areas (Spain and Italy) have been studied in order to investigate their general defensive strategy. Longifolin (1) and nakafuran-9 (2) are the main ichthyodeterrent allomones used by the mollusks to avoid predation. Evidence of their dietary origin is presented and the very effective strategy against predators, which includes secretion of allomones into the mucus and their storage into specific mantle dermal formations (MDFs), is also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00982131
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Defensive allomones in three species ofHypselodoris (gastropoda: Nudibranchia) from the Cantabrian sea (1993)
    Springer
    Journal of chemical ecology 19 (1993), S. 339-356 
    Details
    ISSN: 1573-1561
    Keywords: Opisthobranch ; nudibranch ; Hypselodoris ; chemical defense ; prey-predator relationship ; mantle dermal formations ; furanosesquiterpenoids ; Dysideidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract ThreeHypselodoris species,H. villafranca, H. cantabrica, and H. tricolor, have been studied in order to further investigate the defensive strategies of Chromodorididae mollusks from Iberian coasts. All animals possess large amounts of furanosesquiterpenoids, probably derived from their diet of sponges. The products are transferred and stored in specific sites of the mantle (mantle dermal formations, MDFs) to be used as chemical deterrents against predators. Chemical analysis of CantabrianHypselodoris species has led to the characterization of eight sesquiterpenoids. Among these, six have been found previously in both sponges and nudibranchs, while two are new natural products.Hypselodoris species cooccurring in the same area contained comparable mixtures of sesquiterpenoids. However, two populations ofH. cantabrica from different sites of the Cantabrian sea showed different metabolic patterns. All sesquiterpenoids induce feeding deterrence inCarassius auratus and two are also toxic toGambusia affinis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00993700
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    Paper (German National Licenses)
    Fulltext
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