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  • 1985-1989  (6)
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  • 1
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    Freeze fracture study of the plasma membrane of the marine loricate ciliate Eufolliculina uhligi: morphology and distribution of intramembrane particle aggregates in the swarmer and in the lorica secreting cell (1989)
    Wiley
    Details
    Publication Date: 1989-01-01
    Print ISSN: 0248-4900
    Electronic ISSN: 1768-322X
    Topics: Biology
    Published by Wiley
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    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    Somatic Infraciliature in the Haptorid Ciliate Homalozoon vermiculare (Kinetophragminophora, Gymnostomata) Ditransversalia N. Subcl. and Phylogenetic Implications (1989)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 36 (1989), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The ultrastructure of the cortex of Homalozoon vermiculare is described. The ventral side bears 13–15 iongitudinal kineties composed of monokinetids. On the dorsal surface, there are 3 kineties, 2 of which are composed of dikinetids in the anteriormost part of the cell. Consequently there exist 3 different kinds of kinetids within the somatic cortex: 1) The monokinetids on the ventral side are associated with a kinctodesmal fibril, 2 transverse microtubular ribbons and 7 postciliary microtubules in a double-row configuration; 2) The monokinetids on the dorsal side are very similar but they are associated with just 3 very ‘short postciliary microtubules; 3) The posterior kinetosome of the dorsal dikinetids bears the same fibrillar associates as the dorsal monokinetid, but it lacks the second transverse ribbon. The anterior kinetosome of each pair is associated with a single postciliary’ microtubule. The kinetid organization of Homalozoon is compared to that of other members of the Haptorida. Their phylogeny is discussed. A monophyleiic taxon within the litostomate ciliates is characterized by data on the somatic kinetids, and the new subclass Ditransversalia n. subcl. is constituted. The new subclass comprises the genera Balantidium, Bryophyllum, Enchelydium, Homalozoon, Isotricha, Lacrymaria, Lepidolrachelophyllum, Spathidium and Vestibulongum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1989.tb05364.x
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Fine Structure of Pseudokeronopsis carnea (Ciliophora, Hypotrichida) (1988)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 35 (1988), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Two kinds of pigment structures, pigment vacuoles and pigmentocysts, cause the orange-red color of Pseudokeronopsis carnea (Cohn, 1866). The pigment vacuoles are undischargeable and two to five layers of them form a characteristic ectoplasmic zone. The pigmentocysts mainly surround the infraciliature and show a unique channel which is probably used for extrusion. Previous data on the fine structure of subpellicular granules and extrusomes of hypotrich ciliates are summarized. Their obviously diverse organization argues for a great value of these structures in species identification. The basic structural features of the infraciliature and the cytoplasmic organelles of P. carnea are similar to those found in other hypotrichs; however, a special kind of linear microtubular array borders the longer sides of the cirral bases and the margins of the adoral membranelles and those of the membranes in the right buccal area. To the left of the endoral membrane, these microtubular arrays result in a highly ordered structure reminiscent of oral ribs. This peculiar arrangement of microtubules in cirri and paramembranelles has also been found in the related form, Thigmokeronopsis jahodai, probably indicating a homogeneity of the fine structure of urostylid hypotrichs. In P. carnea, the basal bodies of the paroral membrane are proximally connected like a polykinetid. Its cilia are unlinked, whereas those of the endoral membrane are fused by microfibrillar material. The terms diplostichomonad and polystichomonad only refer to quantitative aspects and omit the evident, high diversity of microtubular and microfibrillar associates occurring in the membranes in the right buccal area. These terms need to be redefined on the basis of more material that is better described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1988.tb04321.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Die Bildplatte, ein neues Medium für den Unterricht (1986)
    Weinheim : Wiley-Blackwell
    Biologie in unserer Zeit 16 (1986), S. 124-125 
    Details
    ISSN: 0045-205X
    Keywords: Life and Medical Sciences
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/biuz.19860160407
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  • 5
    Electronic Resource
    Electronic Resource
    Ingestion, Digestion und Egestion bei Paramecium (1987)
    Weinheim : Wiley-Blackwell
    Biologie in unserer Zeit 17 (1987), S. 129-137 
    Details
    ISSN: 0045-205X
    Keywords: Life and Medical Sciences
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/biuz.19870170507
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  • 6
    Electronic Resource
    Electronic Resource
    Das Experiment: Schwimmbahnen von Einzellern -  Dokumentation mit Hilfe der Dunkelfeld-Langzeitbelichtung (1989)
    Weinheim : Wiley-Blackwell
    Biologie in unserer Zeit 19 (1989), S. 93-95 
    Details
    ISSN: 0045-205X
    Keywords: Life and Medical Sciences
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: Betrachtet man Wasserproben aus dem Freiland mit vielen unterschiedlichen Protistenarten, richtet sich natürlich das erste Interesse auf die stark beweglichen Formen. Man erkennt relativ leicht, daß die diversen Spezies jeweils ganz unterschiedliches Schwimmverhalten zeigen. Die einen schwimmen mehr oder weniger geradlinig in einer Richtung, die anderen schwimmen auch geradlinig, wechseln aber häufig die Richtung, und wieder andere scheinen überhaupt keine vorhersehbaren Ziele anzusteuern. Obgleich man recht bald eine gewisse Vorstellung vom Lokomotionsverhalten der verschiedenen Einzeller bekommt und man einige Spezies vielleicht schon an der Art des Schwimmens identifizieren kann, dürfte es doch recht schwerfallen, exakt die Schwimmbahnen zu beschreiben, welche die Organismen bei ihrer Fortbewegung einschlagen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/biuz.19890190307
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