Experimental Analysis of Adhesion of Chrysolina Polita (Chrysomelidae: Coleoptera) on a Variety of Surfaces
Experimental Analysis of Adhesion of Chrysolina Polita (Chrysomelidae: Coleoptera) on a Variety of Surfaces
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发表时间：
1980-10
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通讯作者：
N. Stork
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作者：
N. Stork
1.对Chrysolina polita（L.）在玻璃、有机玻璃和布上记录，并相对于体重作图。在许多雌性中，卵的额外重量可能是拉力对雌性产生影响的主要原因。随着体重的增加，体重不会显着增加，而男性的体重则会显着增加。2.玻璃和有机玻璃上的拉力显着相关，但在一般情况下，都没有显着相关的布上。这是因为在玻璃和有机玻璃上的牵引力是由粘性刚毛实现的，而在布上则是由跗爪实现的。3.对14个个体的粘附刚毛计数表明，雌性、雄性和雌性（组合）的攀缘刚毛数、雄性的雄性刚毛数和雄性的粘附刚毛总数均随体重的增加而显著增加。4.在雌性、雄性和雌性（组合）中，拉力随着粘附刚毛总数的增加而增加。多元回归分析证实了拉力是粘附刚毛数量的函数的观点。5.钩、吸力、静电力和咬合在很大程度上是不可信的，刚毛和底层之间的分子粘附，以及可能的薄流体层的内聚力和表面张力，被证实是C.光滑表面上最可能的粘附模式。波利塔和大多数甲虫。6.提出叶甲的主要脱离力可能是叶片和树枝的拖曳力和鞭梢效应。估计所需的风速，以消除甲虫从玻璃和布的阻力单独计算。
1.Pulling forces of Chrysolina polita (L.) on glass, perspex and cloth have been recorded and are plotted against body weight. The additional weight of eggs in many of the females is probably the main reason that, in females, pulling forces do. not increase significantly with body weight, whereas those of males do. 2.Pulling forces on glass and perspex are significantly correlated but, in general, neither are significantly correlated with those on cloth. This is because traction on glass and perspex is achieved by the adhesive setae, and on cloth by the tarsal claws. 3.Counts of the adhesive setae in 14 individuals indicate that numbers of climbing setae in females and males and females (combined), male setae in males, and the total number of adhesive setae in males, all show a significant increase with body weight. 4.Pulling force increases with the total number of adhesive setae in females, and males and females (combined).Multiple regression analysis confirms the view that pulling force is a function of the number of adhesive setae. 5.Hooks, suction, electrostatic forces and seizure are largely discredited, and molecular adhesion between the setae and the substratum, and possibly the cohesive forces and surface tension of a thin fluid layer, are confirmed as the most likely modes of adhesion on smooth surfaces in C. polita and most beetles. 6.It is proposed that the main forces of detachment acting on a leaf beetle are probably drag and the whiplash effect of the leaves and branches. Estimates for the wind speeds required to remove beetles from glass and cloth by drag forces alone are calculated.