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  • 1
    Electronic Resource
    Electronic Resource
    The Development of Trypanosoma cruzi (Trypanosomatidae) in the Reduviid Bug Triatoma infestans (Insecta): Influence of Starvation (1998)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 45 (1998), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Fifth instars of Triatoma infestans with established Trypanosoma cruzi infections were dissected after different periods of starvation to determine the population density and the percentage of different developmental stages of T. cruzi in the small intestine and rectum of the bugs. After a short starvation period of 20 days, the population density in the small intestine was 20% (about 60,000) of the rectal population. The population in the small intestine was strongly reduced after an additional ten days of starvation, and no flagellates could be found there 60, 90 and 120 days after the last feeding. In the rectum, this reduction went down to 1% of the initial population, but a total elimination never occurred. Usually the remaining population contained more live than dead flagellates. Starvation also resulted in an increase in the rectum in the number and percentage of drop-like forms, intermediates between sphere- and epi- or trypomastigotes, from 1% initially to about 10% after 90 days of starvation. The percentage of spheromastigotes increased from 2% at 20 days after the last feeding to about 20% after an additional 40 and 70 days. Therefore, the spheromastigotes of T. cruzi seem to be induced by stress conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1998.tb05070.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Trypanosoma cruzi in the rectum of the bug Triatoma infestans : effects of blood ingestion of the vector and artificial diuresis (1997)
    Springer
    Parasitology research 83 (1997), S. 781-788 
    Details
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The population density and the percentage of different developmental stages of an established infection of Trypanosoma cruzi were determined at 40 days after the last feeding of the fourth instar in the rectum (lumen, anterior and posterior wall) of fed and unfed groups of fifth instars of Triatoma infestans. Additionally, the rectum and the Malpighian tubules were incubated in saline, inducing diuresis by addition of the diuretic hormone. The rectum contained an average of 200,000–400,000 T. cruzi. After feeding the percentages of spheromastigotes and drop-like intermediate stages were reduced from 〈7% and 15%, respectively, to 〈3%, but those of slender intermediate stages increased statistically significantly from 〈7% to 10%. After 4 h of diuresis the in-vitro-incubated isolated rectum with the four Malpighian tubules showed the same trends, indicating that diuresis rather than factors of the hemolymph or digestive products induces the development of metacyclic trypomastigotes of T. cruzi originating from epimastigotes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004360050339
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Presence of undigested haemoglobin in the small intestine and haemolymph ofTriatoma infestans (Reduvvidae) infected withBlastocrithidia triatomae (Trypanosomatidae) (1990)
    Springer
    Parasitology research 76 (1990), S. 724-725 
    Details
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00931095
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Die Chagas-Krankheit (1985)
    Weinheim : Wiley-Blackwell
    Biologie in unserer Zeit 15 (1985), S. 42-51 
    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.19850150206
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Auswirkungen von Parasiten auf das Verhalten ihrer Wirte (1989)
    Weinheim : Wiley-Blackwell
    Biologie in unserer Zeit 19 (1989), S. 196-202 
    Details
    ISSN: 0045-205X
    Keywords: Life and Medical Sciences
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: In den letzten Jahren fand man bei verschiedenen Tieren spektakuläre Verhaltensänderungen, die von Parasiten hervorgerufen wurden. Die erstaunlichen parasitogenen Änderungen des Wirtsverhaltens fördern fast immer den Übergang des Parasiten vom Zwischen- zum Endwirt. Häufig ist der Endwirt (per definitionem erfolgt in ihm die geschlechtliche Vermehrung des Parasiten) ein Allesfresser oder Räuber, d. h. der Parasit bewirkt, daß der Zwischenwirt, in dem er sich aufhält, vom Räuber erbeutet wird. Räuber versuchen bei der Jagd, mit möglichst wenig Energieaufwand Beute zu machen. Deshalb werden bevorzugt Tiere gejagt, die auffällig, verletzt, erkrankt oder geschwächt sind. Auffällig werden Zwischenwirte, wenn der Parasit die Tarnfärbung des Wirtes ausschaltet. Larvenstadien von Kratzern (Acanthocephalen) sind oft farbig und durch die Körperwand des Zwischenwirtes für den Räuber gut sichtbar, oder die Parasitierung führt zu einer auffälligen Körperfärbung des Zwischenwirtes selbst. Hierbei handelt es sich jedoch streng genommen nicht um Verhaltensänderungen, so daß ich solche Fälle nur bei wenigen Beispielen mit aufgeführt habe (siehe S. 199/Tabelle 1).
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/biuz.19890190605
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    Paper (German National Licenses)
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  • 6
    Book
    Book
    Arbeitsrechts-Handbuch : systematische Darstellung und Nachschlagewerk für die Praxis (2017)
    Details
    Title: Arbeitsrechts-Handbuch : systematische Darstellung und Nachschlagewerk für die Praxis
    Author: Schaub, Günter
    Contributer: Ahrendt, Martina , Koch, Ulrich , Linck, Rüdiger , Treber, Jürgen , Vogelsang, Hinrich , Anuschek, Tilman
    Edition: 17., neu bearbeitete Auflage
    Year of publication: 2017
    Pages: LXXXIII, 3057 Seiten
    ISBN: 978-3-406-71429-0 , 3-406-71429-3
    Type of Medium: Book
    Language: German
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    ZIB Catalog
    Zuse Institute Berlin get availability status
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