Shandong Institute of Pomology, Shandong Academy of Agricultural Sciences, Tai'an, Shandong 271000, China.
Key Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing 100083, China.
Environ Entomol. 2023 Jun 16;52(3):446-454. doi: 10.1093/ee/nvad034.
Conogethes punctiferalis is a serious pest in China affecting a wide variety of field crops, fruits, and forest trees. Many insects require supplemental nutrients after emergence to compensate for insufficient nutrients at the larval stage. In this study, to better understand the determinants of C. punctiferalis survival and reproduction, the impact of supplemental nutrition was examined. In particular, the effects of 11 treatments (5% sucrose, 10% sucrose, 15% sucrose, 5% sophora honey, 10% sophora honey, 15% sophora honey, 5% wild honey, 10% wild honey, 15% wild honey, distilled water, and blank control) on adult longevity and oviposition were evaluated, with detailed morphological analyses of ovarian development in the 10% sucrose, distilled water, and blank control groups. Conogethes punctiferalis required supplementary nutrition after emergence. Supplementary nutrition improved fecundity (number of eggs laid) and longevity, and 10% sucrose water had the greatest effects. The preoviposition period and oviposition period of C. punctiferalis females were longer, and the numbers of eggs in female ovarian tubes and eggs laid by females were higher in the 10% sucrose water group than in other groups. Females supplemented with distilled water laid a small number of eggs. Without nutrient supplementation, females did not lay eggs. In conclusion, supplemental nutrition was beneficial for ovarian development in female moths, prolonging the oviposition period and lifespan, and was an important factor affecting population dynamics. These results lay a foundation for further analyses of the nutritional requirements for C. punctiferalis in the field and provide a reference for indoor population feeding.
球果麦蛾是中国的一种严重害虫，影响着广泛的大田作物、水果和森林树木。许多昆虫在羽化后需要补充营养，以弥补幼虫期营养不足。在这项研究中，为了更好地了解球果麦蛾的生存和繁殖决定因素，研究了补充营养的影响。特别是，研究了 11 种处理方法（5%蔗糖、10%蔗糖、15%蔗糖、5%槐蜜、10%槐蜜、15%槐蜜、5%野蜂蜜、10%野蜂蜜、15%野蜂蜜、蒸馏水和空白对照）对成虫寿命和产卵的影响，并对 10%蔗糖、蒸馏水和空白对照组的卵巢发育进行了详细的形态分析。球果麦蛾羽化后需要补充营养。补充营养提高了繁殖力（产卵数）和寿命，10%蔗糖水的效果最大。球果麦蛾雌虫的预产卵期和产卵期较长，10%蔗糖水组雌虫卵巢管中的卵数和产卵数均高于其他组。补充蒸馏水的雌虫产卵数较少。没有营养补充，雌虫不产卵。总之，补充营养有利于雌蛾的卵巢发育，延长了产卵期和寿命，是影响种群动态的重要因素。这些结果为进一步分析球果麦蛾在田间的营养需求奠定了基础，并为室内种群饲养提供了参考。
