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Altersabhängige Veränderung von Immunsystem und Verhalten weiblicher Tupajas (Tupaia belangeri)

Altersabhängige Veränderung von Immunsystem und Verhalten weiblicher Tupajas (Tupaia belangeri)

          
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About the Book

Diplomarbeit aus dem Jahr 2006 im Fachbereich Biologie - Zoologie, Note: 1,3, Universität Bayreuth (Lehrstuhl für Tierphysiologie), Sprache: Deutsch, Abstract: In der vorliegenden Arbeit wurde untersucht, ob es bei Tupaia belangeri (Spitzhörnchen) Veränderungen von Verhalten und im Immunsystem im Alter gibt. In einem ersten Versuch wurden unter Standard Laborbedingungen (Heimatkäfig) gehaltene, zwischen 3 Monaten und 7 Jahren alte, Tiere untersucht. Hierfür wurden Verhaltensaufzeichnungen der Hellphase (12h) per Video für eine spätere Auswertung erstellt. Für die Bestimmung von Hormonen und Immunparametern wurde den Tieren zwei Stunden vor Beginn der Aktivitätsphase Blut entnommen. In einem weiteren Versuch wurden dieselben Individuen für 2 Stunden in eine ihnen unbekannte Umgebung gebracht, um zu erforschen, ob die Tiere verschiedenen Alters unterschiedlich in Verhalten und Physiologie auf diese leichte Belastung reagieren. Während der Zeit in der neuen Umgebung (Versuchsräume) wurden wiederum Verhaltensaufzeichnungen angefertigt und im Anschluss eine Blutabnahme durchgeführt. Zusätzlich wurden 2 Wochen vor diesem Versuch Vorwerte zu dieser Tageszeit bestimmt, um über individuelle Veränderungen Aussagen treffen zu können. Die wichtigsten Befunde sind: -Die Aktivität nimmt mit zunehmendem Alter ab. -Körpermasse und Nahrungsaufnahme ändern sich nicht im Alter. -Die Funktionalität und Anteile der Zellen des spezifischen Immunsystems nehmen bei Tupajas mit zunehmendem Alter ab. -Die morgendlichen Glucokortikoidkonzentrationen im Serum nehmen mit dem Alter ab. -Auf eine leichte Belastung reagieren alte und junge Tiere mit vergleichbarem Verhalten; ältere Tiere explorieren im Unterschied weniger das neue Umfeld. -Die Glucokortikoidausschüttung auf eine Belastung hin nimmt mit zunehmendem Alter der Tiere ab.


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Product Details
  • ISBN-13: 9783638951302
  • Publisher: Grin Verlag
  • Binding: Paperback
  • Language: German
  • Returnable: N
  • Spine Width: 6 mm
  • Width: 148 mm
  • ISBN-10: 3638951308
  • Publisher Date: 18 Jun 2008
  • Height: 210 mm
  • No of Pages: 92
  • Series Title: German
  • Weight: 131 gr


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