Department of Functional Morphology and Biomechanics, Zoological Institute, Christian-Albrechts-Universität zu Kiel, Kiel, Germany.
Arthropod Struct Dev. 2012 Mar;41(2):145-53. doi: 10.1016/j.asd.2011.10.001. Epub 2012 Jan 29.
Larvae of the sawfly Rhadinoceraea micans adhere properly to the anti-adhesive surface of their host plant Iris pseudacorus by using three pairs of thoracic legs, seven pairs of abdominal prolegs, and pygopodia, all provided with various smooth adhesive pads. Their attachment performance to smooth flat hydrophilic and hydrophobic glass and Plexiglas surfaces was studied in centrifugal force experiments. Obtained safety factors on Plexiglas were up to 25 in friction, and 8 in adhesion. Although larvae attached significantly stronger to the hydrophilic glass, they attached well also to the hydrophobic one. Pygopodia are suggested to dominate attachment force generation in the centrifugal force experiment. Transverse body position on the centrifuge drum was significantly advantageous for friction force generation than was longitudinal body position. Results are discussed in the context of the sawfly biology and provide a profound base for further detailed studies on biomechanics of sawfly larvae-plant interactions.
叶蜂幼虫通过使用三对胸足、七对腹足和肛足，以及各种光滑的附肢垫，正确地附着在它们的寄主植物鸢尾的非粘性表面上。在离心力实验中，研究了它们在光滑平整的亲水和疏水玻璃以及有机玻璃表面上的附着性能。在有机玻璃上获得的安全系数在摩擦方面高达 25，在附着力方面高达 8。虽然幼虫在亲水玻璃上附着得更牢，但它们在疏水玻璃上也能很好地附着。在离心力实验中，建议肛足主导附着力的产生。在离心桶上横向的身体位置比纵向的身体位置更有利于产生摩擦力。结果在叶蜂生物学的背景下进行了讨论，并为进一步研究叶蜂幼虫与植物相互作用的生物力学提供了坚实的基础。
