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  • 1
    Series available for loan
    Series available for loan
    Elektronenmikroskopische Untersuchungen zur Ernährungsbiologie benthischer Foraminiferen (1990)
    Kiel : Sonderforschungsbereich 313
    Associated volumes
    Details Availability
    Call number: ZSP-167-21
    In: Berichte aus dem Sonderforschungsbereich 313 "Sedimentation im europäischen Nordmeer"
    Description / Table of Contents: Die vorliegende Arbeit soll, eingebettet im Rahmen des Sonderforschungsbereiches 313 "Sedimentation im Europäischen Nordmeer", die Rolle der Foraminiferen in benthischen Ökosystemen untersuchen. Der Schwerpunkt liegt auf der ultrastrukturellen Erfassung natürlicher Nahrungsspektren von Foraminiferen aus verschiedenen Biotopen. Dazu sollen die ernährungsbiologischen Aspekte hinsichtlich besonderer Spezialisierungen elektromikroskopisch untersucht werden. Im experimentellen Teil werden die Reaktionen und Stoffwechseladaptionen von Foraminiferen an saisonale Sedimentationsereignisse dargestellt. Weiterhin wird die Bedeutung der Foraminiferen selbst für andere benthische Organismen im Nahrungsnetz untersucht.
    Type of Medium: Series available for loan
    Pages: 139 S. : Ill.
    Series Statement: Berichte aus dem Sonderforschungsbereich 313 "Sedimentation im europäischen Nordmeer" 21
    Branch Library: AWI Library
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  • 2
    Electronic Resource
    Electronic Resource
    Protection of human skin against jellyfish (Cyanea capillata) stings (1992)
    Springer
    Marine biology 113 (1992), S. 669-678 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In tropical and subtropical regions of the world, jellyfish stings cause fatalities by means of venom injecting nematocysts. For nematocyst discharge an adequate combination of chemical and mechanical stimulation is required. In order to test whether skin care products can protect against nematocyst discharge, we tested two sunscreens and one lotion applied to pieces of live human skin and exposed them to Cyanea capillata tentacles. (Test specimens were collected in 1990 along the shore of Rømø, Denmark and in the Flensburger Förde.) The fine structure analysis of the cnidom of C. capillata showed a high grade of variation in shape and size. The basic distinctive characteristic for stomocnides and astomocnides, the terminal opening at the tubule tip, could not be found. The identification of spines at the basal tubule of atrichous isorhizas suggested that these should be characterized as basitrichous isorhizas. An association between nematocyst morphology and a special function such as penetration or entanglement was not observed. All nematocyst types penetrated unprotected skin. Parafilm (an inert material) and unprotected skin substrates served as controls. The discharged nematocysts on the skin and Parafilm surfaces were counted using scanning electron microscopy. The percentage of discharged nematocysts on test substance protected skin surfaces ranged from only 7.7 to 38.2%, compared to 100% on the unprotected control skin. In addition to this marked reduction in nematocyst discharge, the relatively few discharged nematocysts on protected skin showed malfunctions, and the injection of venom would have failed because the tubules of the nematocysts did not penetrate the skin. The results indicate a general possibility that human skin may be protected against nematocyst discharge of jellyfish with the application of sunscreen or lotion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00349710
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  • 3
    Electronic Resource
    Electronic Resource
    kunstformen der natur (1992)
    Weinheim : Wiley-Blackwell
    Biologie in unserer Zeit 22 (1992), S. 252-252 
    Details
    ISSN: 0045-205X
    Keywords: Life and Medical Sciences
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/biuz.19920220507
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  • 4
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    Protection of human skin against jellyfish (Cyanea capillata) stings (1992)
    Springer
    Details
    Publication Date: 1992-08-01
    Print ISSN: 0025-3162
    Electronic ISSN: 1432-1793
    Topics: Biology
    Published by Springer
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    PAPER CURRENT
  • 5
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    Protection of human skin against jellyfish (Cyanea capillata) stings (1992)
    Springer
    In:  Marine Biology, 113 (4). pp. 669-678.
    Details
    Publication Date: 2018-03-20
    Description: In tropical and subtropical regions of the world, jellyfish stings cause fatalities by means of venom injecting nematocysts. For nematocyst discharge an adequate combination of chemical and mechanical stimulation is required. In order to test whether skin care products can protect against nematocyst discharge, we tested two sunscreens and one lotion applied to pieces of live human skin and exposed them to Cyanea capillata tentacles. (Test specimens were collected in 1990 along the shore of Rømø, Denmark and in the Flensburger Förde.) The fine structure analysis of the cnidom of C. capillata showed a high grade of variation in shape and size. The basic distinctive characteristic for stomocnides and astomocnides, the terminal opening at the tubule tip, could not be found. The identification of spines at the basal tubule of atrichous isorhizas suggested that these should be characterized as basitrichous isorhizas. An association between nematocyst morphology and a special function such as penetration or entanglement was not observed. All nematocyst types penetrated unprotected skin. Parafilm (an inert material) and unprotected skin substrates served as controls. The discharged nematocysts on the skin and Parafilm surfaces were counted using scanning electron microscopy. The percentage of discharged nematocysts on test substance protected skin surfaces ranged from only 7.7 to 38.2%, compared to 100% on the unprotected control skin. In addition to this marked reduction in nematocyst discharge, the relatively few discharged nematocysts on protected skin showed malfunctions, and the injection of venom would have failed because the tubules of the nematocysts did not penetrate the skin. The results indicate a general possibility that human skin may be protected against nematocyst discharge of jellyfish with the application of sunscreen or lotion.
    Type: Article , PeerReviewed
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  • 6
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    Elektronenmikroskopische Untersuchungen zur Ernährungsbiologie benthischer Foraminiferen (1990)
    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 139 pp . Berichte aus dem Sonderforschungsbereich 313, Sedimentation im Europäischen Nordmeer, 21 .
    Details
    Publication Date: 2018-11-20
    Type: Thesis , NonPeerReviewed
    Format: text
    Format: text
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  • 7
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    Predation on jellyfish by the cephalopod Argonauta argo (1992)
    Inter Research
    In:  Marine Ecology Progress Series, 88 . pp. 293-296.
    Details
    Publication Date: 2019-06-26
    Description: An association of Argonauta argo Linnaeus 1758 with Phyllorhiza punctata von Lendenfeld 1884 was observed in situ and collected north of Bohol Island in the Philippine archipelago. The argonaut held the exumbrella of the live lellyfish with its lateral and ventral arms. About half of the medusa bell surface was damaged and large pieces of mesogloea were lacking. The affected exumbrella area was charactenzed by the presence of masses of rod-like bacteria which did not occur on the undamaged ciliated surface. The center of the bell showed 2 holes interpretated as bite marks from the cephalopod. Five channels led from the holes to the medusa's gastric cavity. This connection possibly enabled the argonaut to feed on the tissue and to access particles caught by the secondary mouth papillae of the oral arms of P. punctata. Furthermore, the association could serve A. argo as protection or camouflage against predators because of the stinging capability of the scyphomedusa.
    Type: Article , PeerReviewed
    Format: text
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