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  • 1985-1989  (4)
  • 1980-1984  (7)
  • 1
    Digitale Medien
    Digitale Medien
    Consideration of Taxonomic-Nomenclatural Problems Posed by Report of Myxosporidians with a Two-Host Life Cycle (1985)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 32 (1985), S. 0 
    Details
    ISSN: 1550-7408
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: The recent report of two hosts in the life cycle of the myxosporidian parasite causing whirling disease in rainbow trout left unresolved several important taxonomic-nomenclatural problems that are thus treated here. Although the spore morphology is totally different in the invertebrate host, the species involved can legally have but one name, viz., Myxobolus cerebralis Hofer, 1903 (until 1984, widely known under the name “Myxosoma cerebralis”). The “actinomyxidean” stage found in tubificid worms could have been tentatively assigned to the genus Triactinomyxon only if the latter had been considered as a collective-group name. While intermediate ranks are also affected, even the high-level groups Myxosporidia and Actinomyxidea, long considered taxonomically separate in conventional protozoan classification schemes, must be redefined. If future investigations confirm the existence of a two-host life cycle for Myxobolus cerebralis and perhaps for other related myxosporidian fish parasites, then the phylogenetic distinctiveness of Myxosporidia and Actinomyxidea has been undermined and perhaps they can no longer be treated as evolutionarily divergent assemblages.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1550-7408.1985.tb03083.x
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  • 2
    Digitale Medien
    Digitale Medien
    Concept, Definition, Prevalence, and Host-Interactions of Xenosomes (Cytoplasmic and Nuclear Endosymbionts), (1985)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 32 (1985), S. 0 
    Details
    ISSN: 1550-7408
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: .In this paper the concept of “xenosome” is greatly expanded from its current usage, which has been based on its application during the past 10 years by Soldo and co-workers solely to certain bacterial invaders of the cytoplasm in species of a single genus of marine scuticociliales. The author proposes that the term now be considered to embrace all DNA-containing, membrane-bounded bodies or organelles—prokaryotic or eukaryotic in original nature—found within the cytoplasm or nucleus of eukaryotic cells of any or all kinds, whether the occupation (“colonization”) is temporary and transient or permanent and stable. Thus, virulent or pathogenically infectious organisms can be included as well as the commonly recognized cell endosymbionts sensu stricto, which are often mutualistic in nature. Of significance, such “normal” cell organelles as plastids, mitochondria, and even nuclei may also be embraced by this expanded definition of xenosome, based on the conjecture that these inclusions might have been “alien” or “foreign” extracellular, independent, free-living organisms in their own past evolutionary histories. The author's enlarged concept and unifying principle allows more meaningful comparative consideration of the numerous and diverse kinds of xenosome-host interrelationships, many of which involve species of protozoa and algae from a large number of the taxonomic groups comprising the kingdom Protista.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1550-7408.1985.tb04030.x
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  • 3
    Digitale Medien
    Digitale Medien
    Under New Management (1981)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 28 (1981), S. 0 
    Details
    ISSN: 1550-7408
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1550-7408.1981.tb02793.x
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  • 4
    Digitale Medien
    Digitale Medien
    Symposium on “Symbiosis in Protozoa”: Introductory Remarks, (1985)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 32 (1985), S. 0 
    Details
    ISSN: 1550-7408
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: .Attention, perhaps overdue, is drawn to the extent and significance of endosymbionts (xenosomes sensu lato) in the cytoplasm and nuclei of many protozoa from diverse taxonomic groups. Even more importantly, recent advances in the study of such intimate associations are reviewed and discussed and their impact on broader problems of cell biology and evolution are stressed. Workers inside and especially outside the fields of protozoology and parasitology have often neglected such data, failing to appreciate their relevance to significant problems in their own fields of investigation. The major topics covered by speakers in the Symposium (to which this paper serves only as an introduction) include the following, in order of their presentation: terminology for the symbiont-host relationship and a brief overview of the field; the evolutionary problem of the origin of contemporary associations, including cell organelles such as mitochondria and plastids; the adaptive value of endosymbionts to their protozoan hosts; mechanisms of establishment, maintenance, and integration of such foreign bodies/invaders in their unicellular eukaryotic host cells; and the extent of algal and bacterial endosymbioses in diverse protozoan groups. In all papers, the principal relatively well studied complexes used as examples are the following: various kinds of algae in the larger foraminifera and in ciliates, radiolarians, and acantharians; the several types of bacteria in the cytoplasm of Amoeba and of Pelomyxa; the endonuclear bacterial symbionts of Paramecium; the cytoplasmic prokaryotes in Paramecium and in Parauronema; and the methanogenic bacteria of certain ciliates.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1550-7408.1985.tb04029.x
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  • 5
    Digitale Medien
    Digitale Medien
    The Ultrastructure of Specimens of Paramecium multimicronucleatum Impregnated with Silver by the Fernández-Galiano Method (1982)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 29 (1982), S. 0 
    Details
    ISSN: 1550-7408
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: Transmission and scanning electron microscopy of specimens of Paramecium multimicronucleatum treated with the Rio-Hortega silver-impregnation method as modified by Fernández-Galiano demonstrate that considerable deposition of silver occurs around the kinetosomes, especially at the level of the basal plate and also at the proximal end of the kinetosome. In addition, silver is heavily deposited within the kinetodesmal fibers, in the fibrous matrix that surrounds the postciliary and transverse microtubules, in the connective structures observed between the two kinetosomes of a pair and between the kinetodesmal fiber and the anterior kinetosome, and in the trichocysts. Differences and similarities in sites of deposit when other methods of silver impregnation are employed are discussed and the particular value of the present technique in studies of ciliate systematics and phytogeny is stressed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1550-7408.1982.tb01349.x
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  • 6
    Digitale Medien
    Digitale Medien
    Method for Coding Data on Protozoan Strains for Computers (1980)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 27 (1980), S. 0 
    Details
    ISSN: 1550-7408
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: SYNOPSIS. Traditionally, observations on the nature of protozoa have been published in periodicals or books, or remain buried in research notebooks. The retrieval and processing of information on a particular species or strain are dependent solely upon individual investigators. Although various modern methods have been applied to the study of protozoa, no attempt has been made to develop a system with which information on protozoan strains can be stored, retrieved easily, and processed for various analyses by computer technology. Based upon an existing system for encoding data on bacterial strains, a complementary system applicable to protozoan strains was developed and is described herein.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1550-7408.1980.tb05374.x
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  • 7
    Digitale Medien
    Digitale Medien
    Ciliated protozoa associated with oceanic sinking detritus (1984)
    [s.l.] : Nature Publishing Group
    Nature 309 (1984), S. 246-248 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] We collected sinking particles in drifting, preservative-filled sediment traps6deployed in the high productivity, eastern boundary current off central California (vertical transport and exchange of materials in the upper waters of the ocean, VERTEX I) and Mexico (VERTEX II and III). Bacteria and ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/309246a0
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  • 8
    Digitale Medien
    Digitale Medien
    The protozoon and the cell: A brief twentieth-century overview (1989)
    Springer
    Journal of the history of biology 22 (1989), S. 307-323 
    Details
    ISSN: 1573-0387
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Geschichte
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00139516
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  • 9
    Digitale Medien
    Digitale Medien
    Meeting report: Conference on cellular evolution (1982)
    New York, NY : Wiley-Blackwell
    Cell Motility and the Cytoskeleton 2 (1982), S. 83-89 
    Details
    ISSN: 0886-1544
    Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/cm.970020107
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  • 10
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    Unbekannt
    Ciliated protozoa associated with oceanic sinking detritus (1984)
    Springer Nature
    Details
    Publikationsdatum: 1984-05-01
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von Springer Nature
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