Holznahrung Und Symbiose by Paul Buchner at Bookstore UAE
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Holznahrung Und Symbiose

Holznahrung Und Symbiose


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About the Book

I) Einer meiner Schiiler, Herr Zacharias, hat neuerdings die Pupiparensymbiose eingehend untersucht und damit eine will- kommene Erganzung unserer Kenntnisse der Symbiosen bei Blut- saugern geliefert. Interessanterweise hat sich eine weitgehende Konvergenz auch der symbiontischen Einrichtungen mit denen der Glossinen ergeben, die in okologischer Hinsicht eine so auffallende Parallele bieten. Wie dort ist der vVohnsitz in der Larve und Imago ein verschiedener; zumeist sind es Darmepithelzellen, die von Bak- terien besiedelt werden, nur bei der Schwalbenlaus fanden sich selbstandige voluminose Organe, die den Darm riickwarts umgreifen. Die Ubertragung auf die Nachkommenschaft geht in einer ganz neuartigen \Veise vor sich, wenn die im Mutterleib ja in der Einzahl sich entwickelnden Larven auf dem Umweg iiber die diesen ein Nahr- sekret liefernden "Mi1chdriisen" mit den Symbionten versorgt wer- den. \Vegen weiterer Einzelheiten und beziiglich der interessanten Frage, inwieweit die Symbionten der Blutsauger mit den Rickettsien in Beziehung stehen, muB auf die demnachst in der Zeitschrift fiir Morphologie und Okologie erscheinende Arbeit verwiesen werden. 2) Uber den augenblicklichen Stand unserer Kenntnisse von den Leuchtsymbiosen orientiert ein bei Jul. Springer 1926 erschienener Vortrag "Tierisches Leuchten und Symbiose". Seitdem hat sich auf diesem Gebiet nichts \Vesentliches geandert. 3) Wallin, Ivan E.: Symbionticism and the origin of species. London 1927. Eine eingehende Darlegung und Widerlegung der \Vallinschen Ideen wiirde hier zu weit fiihren. Wir werden uns an anderer Stelle ausfiihrlicher dazu auBern.


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Product Details
  • ISBN-13: 9783642895852
  • Publisher: Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
  • Binding: Paperback
  • Height: 216 mm
  • No of Pages: 64
  • Series Title: German
  • Sub Title: Vortrag Gehalten Auf Dem X. Internationalen Zoologentag Zu Budapest Am 8. September 1927
  • Width: 140 mm
  • ISBN-10: 3642895859
  • Publisher Date: 01 Jan 1928
  • Edition: 1928 ed.
  • Language: German
  • Returnable: N
  • Spine Width: 4 mm
  • Weight: 141 gr


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