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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 8 (1976), S. 0 
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: A marine planarian, Micropharynx parasitica Jägerskiöld, is recorded as an ectoparasite from thorny skates, Raja radiata Donovan, trawled off the coast of Newfoundland, Canada. These are the first records of this parasite in the western North Atlantic Ocean. A description of the material is given to facilitate identification of the parasite, together with some biological notes. The association between Micropharynx and Raja seems to be a true parasitic one, and not a case of commensalism. M. murmanica Awerinzew is considered to be a junior synonym of M. parasitica.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 210 (1966), S. 639-640 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The low mammalian toxicity of dimethyl sulphoxide (DMSO). together with its favourable volatility, miscible nature and solvent properties3-5, suggested that this compound might offer certain advantages as an alternative solvent to acetone. Accordingly some preliminary toxicity tests with the ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 221 (1969), S. 1143-1144 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Freshwater triclads can be divided into two main groups depending on whether the oviducts enter the male atrium or the bursal stalk. Only members of the latter group, comprising the genera Cura, Dugesia, Rhodax and Bopsula, are found in the southern hemisphere, and because the last two genera are ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 675-676 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WERNER Heisenberg once said that a revolution in science could be recognized by old terms acquiring new meanings and by an increase in philosophizing by its practicians. Systematic biology is clearly in the midst of revolution and this is nowhere more clearly indicated than in these two splendid ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 84 (1981), S. 7-12 
    ISSN: 1573-5117
    Keywords: Turbellaria ; Tricladida ; Paludicola
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Is the assumption of the monophyly of the Paludicola (freshwater triclads) justified? There seems little doubt on morphological grounds of the close relationship between the Planariidae and the Dendrocoelidae but it is difficult to connect, phylogenetically, the Dugesiidae with these groups. A connection between the former and some of the latter has been unknowingly implied by the author in previous papers, thus raising an anomaly since this would mean that the Dugesiidae are not monophyletic. Is it possible that the Dugesiidae and the Planariidae + Dendrocoelidae have arisen independently from marine ancestors? The implications of such a speculation are examined.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 62 (1979), S. 137-164 
    ISSN: 1573-5117
    Keywords: Planarians ; Triclads ; Ecology ; Australia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The ten species of freshwater planarians known from Victoria, including one new species, are briefly reviewed. Detailed field and laboratory studies of six of these have been made and a close correlation between seasonal variation in numbers and viability at different laboratory temperatures is demonstrated. Thus Spathula camara and Reynoldsonia reynoldsoni inhabit temporary habitats that experience wide temperature fluctuations and these two species survive equally well in the laboratory at a wide range of temperatures. In contrast Spathula tryssa appears stenothermal in habitat and in the laboratory cannot tolerate even a small temperature increase. Cura pinguis and Dugesia (Girardia) sp. also show wide temperature tolerance both in terms of abundance in the field and viability studies in the laboratory. Spathula agelaea sp. nov. is unusual in that it shows two annual peaks in abundance and also exhibits aggregatory and cannibalistic behaviour that may be involved in population regulation. Aspects of the distribution, abundance, and life cycle, of all the species are discussed in relation to what is known generally of planarian ecology.
    Type of Medium: Electronic Resource
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