基于几何形态测量学的几种蜻蜓翅的形态分析

运用几何形态测量学技术对蜻蜓前后翅进行量化分析,并结合主成分分析法和聚类分析法探讨浙江临海地区常见的4种蜻蜓前后翅的翅型和翅脉变异规律,进而揭示其形态相似形关系.结果表明,异色多纹蜻和红蜻翅的形态相似度最高,而黄蜻与其他几种蜻蜓的差异最大;差异的部位主要在翅痣、翅结区域、径脉域、径脉与中脉之间、肘脉域以及靠近翅基部的臀脉域等区域;异色多纹蜻和红蜻的关系最近,而黄蜻与其他几种蜻蜓的亲缘关系最远.几何测量学可用于蜻蜓种类的划分.

Using Geometric Morphometric Techniques to Analyze Wing Variation of Common Dragonflies

This study uses geometric morphometric techniques to analyze the wing morphological characteristics of four common species of dragonflies in Linhai, Zhejiang Province, and to discuss the variation regulation of wing shape and venation. The study also explores the phylogenetic relationships among the four species. The results of principal component analysis （PCA） show the fore and hind wings of the four species of dragonflies Deielia phaon and Crocothernis servilia have high similarity in the shape of fore and hind wings. However, Pantala flavescens species is significantly different from the other types of dragonflies. The main wing difference can be shown by the wing type mesh contour map, which includes the pterostigma, nodus, radius area, cubitus area, and anal area near the base of the wing. Clustering analysis provides further evidence for the morphological relationship among dragonflies. Based on clustering results, it is determined that D. phaon and C. servilia have the closest phylogenetic relationship. Meanwhile, P. flavescens has the farthest relationship with the other dragonflies. Trithemis aurora is very different in terms of its fore and hind wings.