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  • 1
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    Embryonic pressure tolerances of bathyal and littoral echinoids from the tropi- cal Atlantic and Pacific Oceans (1995)
    Balkema
    Details
    Publication Date: 2023-02-15
    Description: Embryos of 10 species of tropical echinoids, including 5 littoral species from Hawaii, 2 littoral species from the Bahamas, and 3 bathyal species from the Bahamas, were incubated at pressures as high as 300 atm to detennine if pressure tolerances could explain the observed limits ofbathymetric distribution. In every case, embryos were able to tolerate pressures found far outside their normal distributional ranges. Bathyal species sometimes had narrower pressure tolerances than littoral species. It appears that pressure does not set actual limits of most species and would not prevent recruitment or invasion of depths as great as 2000m.
    Type: Book chapter , PeerReviewed
    Format: text
    Location Call Number Limitation Availability
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    OceanRep: Book chapter
  • 2
    Electronic Resource
    Electronic Resource
    Smart collagen in sea lilies (1993)
    [s.l.] : Nature Publishing Group
    Nature 366 (1993), S. 519-520 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Sea lilies (Echinodermata; Cri-noidea) are sedentary animals with a large crown of suspension-feeding arms and a jointed attachment stalk. The stalk can maintain an erect attitude or bend to permit changes in the orientation of the crown1'2. Despite this adaptability, the stalk lacks any form ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/366519a0
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Parachordeumium amphiurae: a cuckoo copepod? (1988)
    Springer
    Hydrobiologia 167-168 (1988), S. 523-531 
    Details
    ISSN: 1573-5117
    Keywords: Amphipholis squamata ; Parachordeumium (=Amphiurophilus) amphiurae ; Rhopalura ; Copepoda ; Ophiuroidea ; brood parasitism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The impact of the endoparasitic copepod Parachordeumium amphiurae (=Amphiurophilus amphiurae of Goudey-Perrière, 1979) on a host population of the brooding, hermaphroditic ophiuroid Amphipholis squamata in intertidal rock pools in South Devon, UK was assessed. In August 1986 the parasite prevalence was 20.6% and the mean population intensity of infection 0.286 parasites per brittlestar. Female parasites inhabited the genital bursae of hosts and most were found in hosts that were potentially reproductively active. In such hosts brooding capacity was reduced by copepod parasitism. Infected brittlestars showed a reduction in numbers of brooded developmental stages when compared with uninfected hosts of similar size (but the mean size of brooded development stages was not affected). For the population sampled, the overall reduction in brooding capacity was about 44%. The association between Amphipholis and Parachordeumium was compared with normal brood parasitism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00026347
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    Paper (German National Licenses)
    Fulltext
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