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Spermien suchen Eizelle

Wie nun gelingen kann, dass Spermien die Eizelle auch finden, war ein Thema des dies academicus.

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Podcast downloaden (25.5 MB)

Mit Hilfe chemischer Substanzen werden die Spermien angelockt; sie orientieren sich an dem chemischen Gradienten, der von einem Lockstoff gebildet wird. Diesen Prozess nennt man Chemotaxis. Ca2+-Ionen spielen eine wichtige Rolle.
Die Veranstaltung mit Prof. Dr. Benjamin Kaupp beschreibt auch, wie die Lockstoffe detektiert und in ein elektrisches Signal umgewandelt werden und wie das Schlagmuster des
Spermium-Schwanzes die Navigation regelt.

last modified 2012-09-08 01:20

     
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