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为阐明西藏飞蝗Locusta migratoria tibetensis Chen散居型地理种群数量性状的地理变异,将散居型西藏飞蝗9个地理种群雌、雄个体的前翅长度(E)、后足股节长度(F)、头宽(C)、前翅长度与后足股节长度比值(E/F)、后足股节长度与头宽比值(F/C)5项形态特征参数进行系统聚类分析和主成分分析。结果表明,系统聚类分析和主成分分析结果有显著差异。应用这些参数对地理种群形态特征的地理变异进行分析时难以提供明确的结果,无法解释其形态特征变异与自然地理条件之间的关系,说明西藏飞蝗不同地理种群的散居型尚未形成自然类型。
In order to elucidate the geographical variation of the quantitative traits of diaspora Geographical Populations in Locusta migratoria tibetensis Chen in Tibet, the length of fore wing (E) Width (C), ratio of length of forewing to hind leg length (E / F), length of hindfoot and ratio of head width to width (F / C) were calculated by cluster analysis and principal component analysis. The results show that there are significant differences between the results of cluster analysis and principal component analysis. When these parameters are used to analyze the geographical variation of morphological characteristics of geographical populations, it is difficult to provide definite results. The relationship between morphological characteristics and natural geographical conditions can not be explained, indicating that the diaspore types of different geographical populations of migratory workers have not yet been formed into natural types.