Monitoring adult populations of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae), a major agricultural pest, provides data useful for its control. Food attractants, considered as adult insect behavior regulators based on the preference of an herbivorous pest for food sources or their volatiles, also have great potential for monitoring populations. To study the feasibility of monitoring the population dynamics and reproductive development of H. armigera in the field using food attractants, we quantitatively analyzed reproductive organ development of adults in a laboratory population as a way to predict the reproductive development of adults trapped using food attractants in the field in 2019 and 2020. The adults trapped using food attractants had obvious generational changes and the same trends in variation for females and males. The extent of ovarian development in trapped females tended to increase within each generation, and the major axis length of testis in trapped males tended to decrease. Reproductive developmental status of trapped adults also differed significantly among months. This study shows that by trapping H. armigera with food attractants, the population dynamics of adults in the field can be monitored, and reproductive anatomy can also be used to monitor adult reproductive status. These approaches are a new way to forecast the population dynamics of this pest.

中文翻译：

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田间诱食棉铃虫（鳞翅目：夜蛾科）种群动态及生殖发育分析

监测棉铃虫（Hübner）（鳞翅目：夜蛾科）的成年种群，这是一种主要的农业害虫，可提供对其控制有用的数据。食物引诱剂，被认为是基于草食性害虫对食物来源或其挥发物的偏好的成虫行为调节剂，也具有监测种群的巨大潜力。为了研究利用诱食剂监测田间棉铃虫种群动态和生殖发育的可行性，我们定量分析了实验室人群中成虫的生殖器官发育情况，以此来预测使用诱食剂捕获的成虫的生殖发育。 2019 年和 2020 年的田间。使用诱食剂诱捕的成虫世代变化明显，雌雄变异趋势相同。受困雌性卵巢发育程度逐代增加，受困雄性睾丸长轴长度呈递减趋势。被困成人的生殖发育状况在几个月之间也存在显着差异。本研究表明，通过诱食诱食棉铃虫，可以监测田间成虫的种群动态，也可以利用生殖解剖学来监测成虫的生殖状况。这些方法是预测这种害虫种群动态的新方法。用食物引诱剂的棉铃虫，可以监测田间成虫的种群动态，也可以用生殖解剖学来监测成虫的生殖状况。这些方法是预测这种害虫种群动态的新方法。用食物引诱剂的棉铃虫，可以监测田间成虫的种群动态，也可以用生殖解剖学来监测成虫的生殖状况。这些方法是预测这种害虫种群动态的新方法。