International Carnivorous Plant Society

Carnivorous Plant Newsletter Archive

 

Catapults into a deadly trap: The unique prey capture mechanism of Drosera glanduligera

Hartmeyer, Siegfried R.H. and Irmgard Hartmeyer and Tom Masselter and Robin Seidel and Thomas Speck and Simon Poppinga

Carniv. Pl. Newslett. 42(1):4-14
Published March 2013

https://doi.org/10.55360/cpn421.sh574

Download PDF

Summary

Active trapping mechanisms constitute some of the most spectacular examples for how carnivorous plants catch their prey. Recently, we showed that the Pimpernel Sundew (Drosera glanduligera Lehm.) possesses active combined catapult-flypaper- traps which work with a sophisticated two-step mechanism: after mechanical stimulation, elongated marginal snap-tentacles at the trap periphery rapidly fling the prey, often with its dorsal side first, onto sticky glue-tentacles on the leaf blade within less than 1/10 second. Subsequently, stimulated mechanically by the impact, slower glue-tentacles lift the prey into a deeply concave leaf-center where digestion takes place. The snap-tentacles have been analyzed in respect to their kinematics, functional morphology and anatomy, and our observations confirm a complex adaptation to carnivory.

Keywords: catapult-flypaper-trap, cultivation, Drosera glanduligera, functional morphology, plant biomechanics, snap-tentacles

Article Citation

Hartmeyer, Siegfried R.H. and Irmgard Hartmeyer and Tom Masselter and Robin Seidel and Thomas Speck and Simon Poppinga. 2013. Catapults into a deadly trap: The unique prey capture mechanism of Drosera glanduligera. Carniv. Pl. Newslett. 42(1):4-14. https://doi.org/10.55360/cpn421.sh574

Page views: 407

 

©International Carnivorous Plant Society      
www.carnivorousplants.org

This page is maintained by John Brittnacher.
Please contact us at our membership website, icps.clubexpress.com.