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Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.

Die neurobiologische Konsequenz des Räuberns oder Grasens

Tübinger Forscher vergleichen die Verschaltungen im Nervensystem zweier Wurmarten

(PresseBox) (München, )
Forscher um Ralf Sommer vom Tübinger Max-Planck-Institut für Entwicklungsbiologie haben erstmals neuronale Korrelate für unterschiedliche Verhaltensweisen nachgewiesen, indem sie die Muster der synaptischen Verbindungen, die sogenannten Connectome, in zwei nahrungsökologisch unterschiedlichen Wurmarten miteinander verglichen haben. Sie verglichen das Schlund-Nervensystem von Caenorhabditis elegans, einem reinen Bakterienfresser, mit dem von Pristionchus pacificus, einem fakultativ räuberischen Allesfresser, und entdeckten große Unterschiede in der Verschaltung der Neurone.

Eine überaus spannende Frage ist jene, inwieweit sich bestimmte Verhaltensweisen in den synaptischen Verschaltungen zwischen Nervenzellen widerspiegeln. Die Beantwortung dieser Frage bedarf eines vergleichenden Ansatzes, welcher bisher selbst bei einem so überschaubaren Organismus wie dem Fadenwurm an
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