一个简单的发育模型再现了复杂的昆虫翅膀脉序模式。
A simple developmental model recapitulates complex insect wing venation patterns.
机构信息
Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138.
Department of Molecular Genetics and Cell Biology, University of Chicago, Chicago, IL 60637;
出版信息
Proc Natl Acad Sci U S A. 2018 Oct 2;115(40):9905-9910. doi: 10.1073/pnas.1721248115. Epub 2018 Sep 17.
Insect wings are typically supported by thickened struts called veins. These veins form diverse geometric patterns across insects. For many insect species, even the left and right wings from the same individual have veins with unique topological arrangements, and little is known about how these patterns form. We present a large-scale quantitative study of the fingerprint-like "secondary veins." We compile a dataset of wings from 232 species and 17 families from the order Odonata (dragonflies and damselflies), a group with particularly elaborate vein patterns. We characterize the geometric arrangements of veins and develop a simple model of secondary vein patterning. We show that our model is capable of recapitulating the vein geometries of species from other, distantly related winged insect clades.
昆虫的翅膀通常由称为翅脉的加厚支柱支撑。这些翅脉在昆虫中形成各种不同的几何图案。对于许多昆虫物种，即使是来自同一个体的左右翅膀，其翅脉也具有独特的拓扑排列，而对于这些模式如何形成，人们知之甚少。我们对指纹状的“二级脉”进行了大规模的定量研究。我们编译了一个来自 232 个物种和 17 个科的数据集，这些物种来自蜻蜓目（蜻蜓和豆娘目），这是一个具有特别精细的翅脉模式的群体。我们描述了翅脉的几何排列，并开发了一个二级脉模式的简单模型。我们表明，我们的模型能够重现来自其他远缘翅类昆虫的物种的脉几何形状。
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