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首页> 外文期刊>Journal of Economic Entomology >Geographical Variations in the Life Histories of Rhopalosiphum padi (Hemiptera: Aphididae) in China
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Geographical Variations in the Life Histories of Rhopalosiphum padi (Hemiptera: Aphididae) in China

机译：胭脂红凤凰（Hemiptera：蚜虫）生命历史的地理变异

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摘要

Population dynamics of an insect can be affected by its life-history traits. Understanding of the life-history variations among geographical populations of an insect pest is important for developing the corresponding control strategies in different regions. Rhopalosiphum padi is a cosmopolitan cereal pest, and life-history traits identification of R. padi from different geographical regions is rare. Here, we experimentally evaluated variations in the life histories and life-table parameters of R. padi populations from six widely ranging geographical regions, including Baoding (HB), Xianyang (SX), Nanyang (HN), Wuhan (HW), Beibei (CB), and Guiyang (GG), in China. Total longevity was similar for HB, CB, and GG populations and generally shorter than that of the SX, HN, and HW populations. The age at first reproduction of HB and HW populations was significantly different from that of the other four populations. Mean fecundity of the SX population was significantly higher than that of the other five populations, and the mean fecundity of the GG population was the lowest. Principal component analysis (PCA) also showed that the life-history and life-table parameters of R. padi differed among the six geographical populations. According to PCA results, the HW population was in one cluster; the GG population was in another cluster; the SX, HN, and CB populations were in one cluster; and the HB population differed from the above three clusters. The complexity of local genetic adaptation in aphids was discussed. The current results will likely be of importance to management practices and population dynamics forecasting of R. padi.
机译：昆虫的种群动态会受到其生活史特征的影响。了解害虫地理种群间的生活史差异对不同地区制定相应的防治策略具有重要意义。稻纵卷叶螟是一种世界性的禾谷害虫，不同地理区域稻纵卷叶螟的生活史特征鉴定比较少见。在这里，我们通过实验评估了中国保定（HB）、咸阳（SX）、南阳（HN）、武汉（HW）、北碚（CB）和贵阳（GG）等六个地理区域的帕迪雷氏菌种群的生活史和生命表参数的变化。HB、CB和GG群体的总寿命相似，通常短于SX、HN和HW群体。HB和HW群体的首次生殖年龄与其他四个群体显著不同。SX群体的平均繁殖力显著高于其他五个群体，GG群体的平均繁殖力最低。主成分分析（PCA）还表明，在六个地理种群中，R.padi的生活史和生命表参数存在差异。根据主成分分析结果，HW人群处于一个聚类中；GG人群在另一个集群中；SX、HN和CB群体在一个集群中；HB人群与上述三类人群不同。讨论了蚜虫局部遗传适应的复杂性。目前的研究结果可能对帕迪雷伯菌的管理实践和种群动态预测具有重要意义。

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