Morphological discrimination of geographical populations of Macrosiphoniella sanborni (Gillette, 1908) (Hem.: Aphididae) in Iran
Morphological discrimination of geographical populations of Macrosiphoniella sanborni (Gillette, 1908) (Hem.: Aphididae) in Iran
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发表时间：
2009
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影响因子：
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通讯作者：
S. M. Madjdzadeh;M. Mehrparvar
中科院分区：
文献类型：
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作者：
S. M. Madjdzadeh;M. Mehrparvar
为了分析蚜虫的种群变异和种间鉴别力，经常对不同类群的蚜虫进行多变量形态计量学研究，这些研究涉及到对蚜虫形态有重要影响的寄主植物、温度和地理等因素。菊花蚜虫Macrosiphoniella sanborni（半翅目：蚜虫科）是世界各地栽培菊花上广泛分布的害虫。本文对11个居群的21个形态性状进行了研究。对从伊朗几个地理位置收集的sanborni进行了检查。多变量形态计量技术，典型变量分析（CVA）和聚类分析，以确定这些群体是否可以可靠的形态区分。结果显示了人口之间的这种歧视。克尔曼沙阿种群（位于伊朗西部）与其他种群明显分离，表明存在一个形态上不同的群体。可以得出结论，地理障碍和气候条件的存在是造成种群之间差异的最重要因素。其他补充研究，如遗传学调查，将提供一个更好的理解种群结构的进化意义。
Multivariate morphometric studies are often carried out on different aphid taxa in order to analyze population variation and species discrimination in relation with different factors such as host plant, temperature and geography, which have significant effect on aphid morphology. The chrysanthemum aphid, Macrosiphoniella sanborni (Hemiptera: Aphididae), is a widespread pest on cultivated chrysanthemum throughout the world. In the present study 21 morphological characters in 11 populations of M. sanborni collected from several geographic locations in Iran were examined. Multivariate morphometric techniques, canonical variates analysis (CVA) and cluster analysis were used to determine whether these populations can be reliably morphologically discriminated. The results showed such discrimination between populations. The Kermanshah population (located in western Iran) clearly separated from other populations, indicating the presence of a morphologically distinct group. It could be concluded that presence of a geographic barrier and climatic conditions are among the most important factors which contribute to the differentiation between populations. Other complimentary studies such as genetic investigation will provide a better understanding of the evolutionary implications of the population structure.