Nierenentwicklung bei Mollusca und Sipuncula - ist die Mollusken-Niere unabhängig erworben?

• Antragsteller: Dr. Bernhard Ruthensteiner
• Fachliche Zuordnung: Evolutionäre Zell- und Entwicklungsbiologie der Tiere
• Förderung: Förderung von 2008 bis 2012
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 72988980

• Erstellungsjahr: 2012

Zusammenfassung der Projektergebnisse

Nephrogenesis of members of four molluscan „classes“ was investigated by TEM and 3D reconstruction. Three species (Wirenia argentea, (Solenogastres), Antalis entails (Scaphopoda) and Mytilus galloprovincialis (Bivalvia) undergo a protonephridial stage during metanephridial development, while in Lepidochitona corrugata (Polyplacophora) the kidney arise as outgrowths of the pericardial anlage. No ground pattern for molluscan nephrogenesis can be postulated and a considerable range of different development modes occurs in the Mollusca. We propose the serial homology of protenephridia and the metanephridial system within the Mollusca. Because there are no principal differences in nephrogenesis between molluscs and annelids, the homology of molluscan and annelidan metanephridial system seems likely. We propose the presence of (functional) protonephridial organs in certain adult molluscs.

Projektbezogene Publikationen (Auswahl)

• Development of Molluscan Excretory Systems with Emphasis on Polyplacophora. Generierung, Analyse und Visualisierung morphologischer Datensätze - 3. Graduiertenforum der Fachgruppe Morphologie, 21.-24. Oktober 2010, Universität Wien – Programm & Abstracts:
  Baeumler, N., Haszprunar, G., Ruthensteiner, B.
  
• Development of the Excretory System in a Polyplacophoran. In: Tropical Natural History. Supplement 3. 17th World Congress of Malacology, 18-24 July 2010, Phuket, Thailand, Abstracts, Ed. Somsak Panha, Department of Biology, Faculty of Science, Chulalongko
  Baeumler, N., Haszprunar, G. & Ruthensteiner, B.
  
• Rehabilitation of the Nephrocoel Theory? The Example of Mytilus. Generierung, Analyse und Visualisierung morphologischer Datensätze - 3. Graduiertenforum der Fachgruppe Morphologie, 21.-24. Oktober 2010, Universität Wien – Programm & Abstracts: 37
  Baeumler, N., Haszprunar, G., Ruthensteiner, B.
  
• Rehabilitation of the Nephrocoel Theory? The Example of Mytilus. In: Tropical Natural History. Supplement 3. 17th World Congress of Malacology, 18-24 July 2010, Phuket, Thailand, Abstracts, Ed. Somsak Panha, Department of Biology, Faculty of Science, Chul
  Baeumler, N., Haszprunar, G. & Ruthensteiner, B.
  
• Development of the Excretory System in the Polyplacophoran Mollusc, Lepidochitona corrugata: The Protonephridium. Journal of Morphology. 272: 972–986
  Baeumler, N., Haszprunar, G., and Ruthensteiner, B.
  
• Highly variable patterns in development of the metanephridial and coelomic system in molluscs. Zitteliana. B30: 44
  Ruthensteiner, B., Haszprunar, G., Baeumler, N.
  
• Larval and adult excretory systems in molluscs - how do they compare? 4. Graduiertenforum der Fachgruppe Morphologie der Deutschen Zoologischen Gesellschaft 21.-23. Oktober 2011, Abstracts (& Programm): 17
  Baeumler, N. Haszprunar, G. & Ruthensteiner, B.
  
• Overlap in appearance of the protonephridia and the metanephridial system in a mollusc. Zitteliana. B30: 10
  Baeumler, N. Haszprunar, G., Ruthensteiner, B.