Helicoverpa armigera is a pest of several crops causing significant economic impact. We evaluated the insect development on different vegetative and reproductive structures of cotton, maize, and soybean compared to artificial diet. One hundred individuals were evaluated per structure (cotton leaves and bolls; maize leaves, grains, and silk; soybean leaves and pods) and artificial diet. Centesimal analyses were performed on quantifiable nutrient contents in diets. The viability of immatures (eggs, larvae, and pupae) ranged from 30% on maize leaf to 74% on cotton bolls, while on the artificial diet, it was 70%. Maize, cotton, and soybean leaves provided viability of 30, 37, and 42%, respectively, revealing these leaves tissues are less favorable to the development of H. armigera immatures compared to ‘reproductive tissues’. Centesimal composition of diets compared 14 common components in all diets, which correlated significantly with larval and pupal stages and/or pupal weight. Of the 12 dietary components that significantly affected larval development time, half were negatively correlated, indicating a decrease in developmental time from their increments. In general, when insects were confined separately to substrates, the artificial diet was the most suitable for H. armigera development compared to the evaluated natural diets. However, in natural conditions, the variability of available hosts must be considered. In addition, it is acceptable for moths to select more suitable hosts for oviposition, while their larvae move to other more suitable tissues of the same plant or even migrate to other plants.

中文翻译：

---

营养成分在棉铃虫 (Hübner) (鳞翅目：夜蛾科) 对人工饲料和自然宿主的发育和生存中的作用

棉铃虫是一种对多种作物造成重大经济影响的害虫。我们评估了与人工饲料相比，棉花、玉米和大豆的不同营养和生殖结构上的昆虫发育。每个结构（棉叶和棉铃；玉米叶、谷物和丝绸；大豆叶和豆荚）和人工饮食评估了 100 个人。对饮食中可量化的营养成分进行百分位数分析。未成熟幼虫（卵、幼虫和蛹）的存活率从玉米叶的 30% 到棉铃的 74% 不等，而人工饲料则为 70%。玉米、棉花和大豆叶片的活力分别为 30%、37% 和 42%，表明这些叶片组织不利于棉铃虫与“生殖组织”相比，未成熟。饮食的百分组成比较了所有饮食中的 14 种常见成分，这与幼虫和蛹阶段和/或蛹重量显着相关。在显着影响幼虫发育时间的 12 种膳食成分中，有一半呈负相关，表明发育时间随着它们的增加而减少。一般来说，当昆虫被单独限制在基质中时，人工饲料最适合棉铃虫与评估的天然饮食相比的发展。然而，在自然条件下，必须考虑可用宿主的可变性。此外，飞蛾可以选择更适合产卵的宿主，而它们的幼虫则移动到同一植物的其他更合适的组织，甚至迁移到其他植物。