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Introducing the Catapult-Flypaper-Trap


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We are happy to introduce the catapult-flypaper-trap in PLOS ONE and on YouTube:


... and I was not quite sure in which topic I should post this: "Sundews" or "Spring traps" ;-)).

We show the first experimental evidence for the role of catapulting tentacles in prey capture of a carnivorous plant and introduce a new active trapping mechanism: The catapult-flypaper-trap. This video documents our (Irmgard and Siegfried R. H. Hartmeyer) collaboration with the Plant Biomechanics Group of the Botanic Garden of the Albert-Ludwigs-University Freiburg (Germany) in 2012, providing all necessary information to handle the sophisticated cultivation of Drosera glanduligera and to understand how this unique sundew from southern Australia uses its amazing combined catapult-flypaper trapping mechanism. Prey animals walking near the edge of the sundew trigger a touch-sensitive snap-tentacle which swiftly catapults them upside down onto adjacent sticky glue-tentacles. By acting like a band-conveyor, the glue-tentacles lift the prey into the concave leaf-center within two minutes where digestion takes place, well protected from kleptoparasites. This is the first detailed documentation and analysis of the prey-catching, functional morphology, and kinematics of such catapulting tentacles, and highlights a unique and surprisingly complex mechanical adaptation to carnivory.

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Great info, Siggi. I already knew the D. glanduligera, because some time ago i created a topic about it on a forum of carnivorous plants in Brazil, but even so I am fascinated with the speed at which your traps are triggered at the slightest touch of the prey.

I don't know if there in Europe it is common in cultivation, but here in my country, i do not know who owns. In any case, thank you so much for sharing this information on CPUK.

Best regards,


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Thank you for the kind feedback. The world-wide press reaction on the catapult-flypaper-trap is overwhelming, even after not just yet 48 hours. Provided with data by Simon Poppinga from the University Freiburg, we are able to provide a topic press-coverage on our website. However, I still don't know what they write in Russian and Greek letters ;-).


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I open the PLoS ONE site this morning, and bam, featured image: a drosera!! Congratulations, and thank you: it's really great to see carnivorous plants being the hot topic in one of the most influential scientific journals worldwide!

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Thanks for your kind feedback. @Andreas Eils: Yes, that is really correct ;-). I was just informed about a Twitter news by Victoria Costello, tweeting for @plos, regarding a "knee bend" of their server after publication.

Ha! Our site slowdown blamed on mega-popularity of PLOSONE's carnivorous plant bit.ly/RlVHLu and Cannibis papers bit.ly/S3Oy53


An recommendable blog was also released at Ryan Kitko's site:


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