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二点委夜蛾(Athetis lepigone)自2005年在河北省夏玉米田被发现以来，已成为威胁我国玉米生产的主要害虫之一。本研究综合线粒体COⅠ基因与MaxEnt模型，分析其遗传分化格局及适生区分布。结果显示，黄淮平原(HUANGHPY)群体的遗传多样性最高；芬兰(FL)、巴基斯坦(BJST)、奥地利(AUST)、瑞典(SWED)群体与其他群体间遗传分化差异显著(Fst>0.25,P<0.05)。AMOVA分析表明，63.09%的遗传变异来源于群体间。系统发育和单倍型分析表明，BJST、韩国(HGWZ)群体与其他群体分离且部分存在基因交流。适生区预测显示其潜在分布远超当前发生区，包括中国、朝鲜、日本、韩国、俄罗斯西部、欧洲大部分国家及北美的美国与加拿大部分地区。本研究揭示了二点委夜蛾群体遗传分化与谱系地理格局，并对未来可能危害区域提出了防控预警。
Abstract：Athetis lepigone has become one of the major insect pests threatening maize production in China since its discovery in summer maize fields of Hebei Province in 2005. This study integrates mitochondrial COⅠ gene analysis with maximum entropy(MaxEnt) model to investigate the genetic differentiation patterns and suitable habitats of this pest. Results revealed that the Huang-Huai Plain(HUANGHPY) population exhibited the highest genetic diversity. Significant genetic differentiation(Fst>0.25, P<0.05) was observed for the Finland(FL), Pakistan(BJST), Austria(AUST), and Sweden(SWED) populations compared with other populations. AMOVA results indicated that 63.09% of genetic variation originated from inter-population differences. Phylogenetic and haplotype analyses demonstrated genetic segregation for the BJST and South Korea(HGWZ) populations relative to other populations, with evidence of partial gene flow. Suitable habitat prediction suggests that the potential distribution of this pest extends far beyond the current occurrence zones, encompassing China, North Korea, Japan, South Korea, western Russia, most European countries, and parts of North America(United States and Canada). This study elucidates the genetic differentiation and phylogeographic pattern of A. lepigone populations, while providing an early warning for potential infestation risks in newly identified suitable habitats.
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基本信息:
DOI：10.15914/j.cnki.wykx.2025008
中图分类号:S433.4
引用信息:
[1]张冰倩,刘雅文,李静.二点委夜蛾的谱系地理格局及适生区预测[J].武夷科学,2025,41(02):81-94.DOI:10.15914/j.cnki.wykx.2025008.
基金信息:
河北省省级科技计划资助(22326507D)