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  • 1
    Electronic Resource
    Electronic Resource
    Seasonal changes in erythrocyte osmotic fragility and haematocrit in American plaice infected with Haemohormidium terranovae (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 47 (1995), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: American plaice held in captivity for a period of 8 months over winter exhibited increasing erythrocyte osmotic fragility and decreasing haematocrit values until December. In December, osmotic fragility parameters and haematocrit were strongly correlated, suggesting anaemia due to disruption of circulating erythrocytes. Intensity of infection with Haemohormidium terranovae increased through the winter months until March but was not correlated either with osmotic fragility or haematocrit. These results are explained in terms of compensatory haemopoetic changes occurring in plaice. Mortality was apparently unrelated to any of the parameters investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1995.tb01867.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A STUDY OF SOME ASPECTS OF THE PLAY AND LANGUAGE OF YOUNG CHILDREN WITH DELAYED SPEECH (1968)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of child psychology and psychiatry 9 (1968), S. 0 
    Details
    ISSN: 1469-7610
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-7610.1968.tb02206.x
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  • 3
    Electronic Resource
    Electronic Resource
    Bleeding in human volunteers from the bite of the American medicinal leech Macrobdella decora compared with its European counterpart Hirudo medicinalis (1991)
    Springer
    Comparative clinical pathology 1 (1991), S. 214-216 
    Details
    ISSN: 1433-2981
    Keywords: Hirudin ; Hirudo medicinalis ; Leech ; Macrobdella decora ; Prolonged bleeding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In this paper the effectiveness of the so-called American medicinal leech Macrobdella decora in overcoming human haemostasis is compared to that of the European medicinal leach Hirudo medicinalis. Thrombin-clotting times indicated that M. decora prevents coagulation of human blood by means of anti-thrombin activity. Our findings suggest that its role is similar to that of hirudin. In human volunteers, the duration of bleeding from the bite of M. decora (mean = 73 min; n = 18) is significantly shorter than H. medicinalis (mean = 600 min; n = 15). The mean concentration of anti-thrombin units in each specimen of M. decora and H. medicinalis is 100 and 285 AT-U, respectively. These findings support the concept that H. medicinalis is more advanced in terms of haematophagous predation. Despite similar feeding durations by both species of leech (means = 68 min and 70.5 min by M. decora and H. medicinalis, respectively), the mean increase in body weight of M. decora was only 58% compared to 460% in H. medicinalis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00235373
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  • 4
    Electronic Resource
    Electronic Resource
    The leech as a tool for studying comparative haematology (1992)
    Springer
    Comparative clinical pathology 2 (1992), S. 75-78 
    Details
    ISSN: 1433-2981
    Keywords: Bleeding ; Fish ; Frog ; Haemostasis ; Hirudin ; Leech ; Platelet ; Thrombocyte
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The bite of the North American leech Macrobdella decora results in much less prolonged bleeding in fish (8 min; control = 1 min) and amphibians (11.5 min; control = 1.5 min) than in mammals (humans) (73 min; control = 6 min). Coagulation of blood flowing from leech bite wounds is initially prolonged in frogs (4.3 min; control = 2 min) and humans (5.8 min; control = 2.5 min), but gradually returns to normal during the first 10 min after the termination of feeding. Although duration of feeding is similar in fish (mean = 62 min), amphibian (mean = 79 min) and human (mean = 68 min) hosts, the gain in body weight of leeches feeding on fish (mean = 11%) and amphibians (mean = 14%) is much less than those feeding on humans (mean = 58%). Bleeding in a frog heavily infected with the intrathrombocytic yeast Thrombocytozoons ranarum was abnormal from control incisions (〉20 min) and from a leech bite wound (〉140 min) suggesting impairment of thrombocyte function. This comparative approach to leech — host haematology offers a methodology into understanding the biological context in which the leech antithrombin (hirudin) evolved, as well as the evolution of vertebrate haemostatic mechanisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00186263
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  • 5
    Electronic Resource
    Electronic Resource
    Sea-level fluctuations during the last glacial cycle (2003)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 423 (2003), S. 853-858 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The last glacial cycle was characterized by substantial millennial-scale climate fluctuations, but the extent of any associated changes in global sea level (or, equivalently, ice volume) remains elusive. Highstands of sea level can be reconstructed from dated fossil coral reef terraces, and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature01690
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    Paper (German National Licenses)
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