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Welcome to our carnivorous plant speed contest! Four carnivorous genera qualified for our speed contest and they all give their best. Is Aldrovanda able to keep up even against the water resistance? How well does the famous Venus flytrap? Does the sundew that is usually regarded quite sedate have a chance at all in this competition? And what's the story with the southern bladderwort? Examined in detail with the help of time lapse as well as slow motion shots. English subtitles provided, enjoy! Special thanks go to Dr. Simon Poppinga and his team of the Plant Biomechanics Group of the University Freiburg as well as to Dr. Jan Schlauer for his kind support.
The catapults of the sundew Drosera glanduligera fling passing prey animals in a sensational manner onto the sticky trapping leaves. Already in 2012, we measured and published this enormous - 75 ms - speed for a capture event, in the labs of the Plant Biomechanics Group of the University Freiburg (Germany). In this film, we show again by measurements with Dr. Simon Poppinga at the labs of the bionics specialists in Freiburg, what an amazing force these catapults possess. A single catapult has an average weight of 0.15 mg. The rapidly flung fruit flies in our former experiments weigh 1.74 mg in average, which is about 12 times as much as one catapult. This result is quite amazing, but how efficient are these hydraulic powered tentacles really? Enjoy!