摘要：
为了明确桃红颈天牛雌雄成虫之间的差异,利用图像处理技术和昆虫数学形态学手段,系统研究了雌雄成虫各形态学指标.结果表明,雌雄个体间在足间距和触角长度方面差异显著,而体长、前胸背板长和前胸背板宽等参数差异不显著.因此,个体大小(体长)不能单独作为区分其雌雄的参数.在成对性状比较上,桃红颈天牛左右鞘翅宽度在3个数据集(雌性、雄性和雌雄)中均存在显著差异,其他成对性状在不同数据集中的差异显著性不同.在参数比值上,桃红颈天牛雌雄成虫在鞘翅长/宽、触角各节/触角总长、前足腿节/前足长、中足各节/中足长等方面存在显著差异.此外,桃红颈天牛雌雄成虫身体两侧多个被测参数存在波动不对称性.因此,利用昆虫数学形态学技术可以区分桃红颈天牛雌雄成虫间的差异,并发现多个性状存在不对称性.%In order to clear the difference between female and male of peach longicorn beetle [Aromia bungii(Faldermann)] adults,morphological parameters of the beetle adults were obtained and analyzed by image processing techniques and insect mathematical morphology methods.The results indicated that the right-left-coxal cavity gaps and antenna length were significantly different between female and male adults,but not in terms of body length,pronotum length and width.Consequently,the individual size (body length) by oneself should not be the parameter in distinguishing female and male adults of the beetle.Significant differences emerged in the width of right and left elytra in three sets of data(female,male,female and male) by comparing paired characteristics,but the significance of other parameters was not same in different sets of data.In terms of parameter ratio,significant differences were found in such as elytra length/width,each segments/antenna length,pro-femur/propodium length,each parts/mesopodium length between two gender samples.In addition,many pairs of characteristics from female and male beetles hadfluctuating asymmetry in measured parameters.As a consequence,the difference between female and male adults of A.bungii can be distinguished by mathematical morphology,and the asymmetry of many parameters is found in this study.
