Self-righting physiology of the ladybird beetle Coccinella septempunctata on surfaces with variable roughness.
Self-righting physiology of the ladybird beetle Coccinella septempunctata on surfaces with variable roughness.
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瓢虫甲虫 Coccinella septempunctata 在不同粗糙度表面上的自恢复生理学。
DOI：
10.1016/j.jinsphys.2021.104202
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发表时间：
2021-02
影响因子：
2.2
通讯作者：
Jianing Wu
中科院分区：
文献类型：
--
作者：
Jie Zhang;Jing Li;Chujun Li;Zhigang Wu;Haizhao Liang;Jianing Wu
像蟑螂和蝗虫这样的昆虫会迅速地自我调整，以减少被捕食者攻击的机会。与这些昆虫相比，瓢虫的腿更短，隐藏在高度圆顶的鞘翅内，因此如果使用腹部伸展和/或腿摆动的策略，自我扶正是一个很大的挑战。具体地说，瓢虫生活在地面上的环境与集群的植被，所以他们很容易从各种自然基质，如土壤，树皮和树叶自我权利。然而，在这种复杂的环境下，多个表面的自我扶正策略仍然是难以捉摸的。在这个结合实验和理论研究，我们研究和量化的自我扶正生理瓢虫（瓢虫）表面粗糙度不同。大多数瓢虫在15.00 s内自我扶正，使用腿或翅膀策略在3次尝试内的成功率为~100.00%，并且自我扶正策略与表面粗糙度密切相关。在较粗糙的板（Ra= 124.62 μm）上的扶正通过摆动腿以将突起附接并钩在粗糙表面上来进行。然而，如果在光滑的表面（Ra= 6.69 μm）上发生自翻正，则鞘翅和后翅都会展开，以改变身体的方向来翻转。在考虑表面粗糙度影响的基础上，通过数学模型分析了自回正机理，揭示了爪与表面微结构的接触状态对自回正所需力臂的影响，从而导致二元策略选择.我们的量化的自我扶正在不同的表面不仅加深了理解瓢虫的自我扶正，但可能会启发新的手段来评估其环境适应性。
Insects such as cockroaches and locusts self-right swiftly to reduce chances of being attacked by predators. Compared to these insects, ladybirds have shorter legs hidden inside highly domed elytra so self-righting is of great challenge if using strategies of abdominal arching and/or leg swinging. Specifically, ladybirds live in over-ground environment with clusters of vegetation so they are prone to self-right from various natural substrates, such as soil, bark, and leaves. However, self-righting strategies under such complicated environment packed with multiple surfaces remain elusive. In this combined experimental and theoretical study, we examined and quantified self-righting physiology of ladybirds (Coccinella septempunctata) on surfaces with varying roughness. Most ladybirds self-right in 15.00 s with a success rate of ~100.00% within 3 attempts using either legged or winged strategies, and the self-righting strategy is strongly associated with the surface roughness. Righting on a coarser board (Ra= 124.62 μm) is performed by swinging the legs to attach and hook the protrusions on the rough surface. However, if self-righting occurs on a smooth surface (Ra= 6.69 μm), both the elytra and hind wings deploy to alter the body orientation to roll over. Considering the effect of surface roughness, we analyzed the self-righting mechanism by a mathematical model, and uncovered that contact status between the claw and surface microstructures affected the arm of force required to self-right, which leads to the binary strategic selection. Our quantification of self-righting on diverse surfaces not only deepens understanding of ladybird’s self-righting but may inspire new means of evaluating its environmental adaptability.
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影响因子：
9.2
作者：
Tuthill, John C.;Wilson, Rachel I.
通讯作者：
Wilson, Rachel I.
影响因子：
2
作者：
M. Evans
通讯作者：
M. Evans
影响因子：
2.5
作者：
D. Penn;H. Brockmann
通讯作者：
D. Penn;H. Brockmann
DOI：
--
发表时间：
1987-11
期刊：
The Journal of experimental biology
影响因子：
--
作者：
F. Delcomyn
通讯作者：
F. Delcomyn
DOI：
--
发表时间：
2002-08
期刊：
The Journal of experimental biology
影响因子：
--
作者：
Z. Dai;S. Gorb;U. Schwarz
通讯作者：
Z. Dai;S. Gorb;U. Schwarz