Egg parasitoids belonging to the genus Trichogramma (Hymenoptera: Trichogrammatidae) are important natural enemies that have been successfully used in biological control programs and mostly reared on the Mediterranean flour moth, Ephestia kuehniella (Zeller) (Lepidoptera: Pyralidae). Host quality is a crucial factor that can determine parasitoid fitness. Laboratory studies were carried out to evaluate the effects of 3 different larval diets CY diet (95% cornmeal + 5% yeast), CBGY diet (53.3% cornmeal + 26.7% wheat bran + 15% glycerine + 5% yeast), and WBGY diet (53.3% wheat flour + 26.7% wheat bran + 15% glycerine + 5% yeast) on some demographic parameters of E. kuehniella. Moreover, the performance of the species Trichogramma evanescens Westwood reared on the E. kuehniella eggs reared on the 3 artificial diets were determined. For the E. kuehniella rearing, the CY diet had a higher fecundity and greater emergence ratios. Nevertheless, CY diet also provided shorter developmental time, greater fecundity, and relatively higher female ratios of subsequent generations of the parasitoids. The results suggest that the CY diet could be considered as a standard diet for the multigenerational rearing of T. evanescens.

中文翻译：

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寄主饮食对卵类寄生性寄生虫Trichogramma evanescens Westwood（膜翅目：Trichogrammatidae）的适应性的作用

属于蠕形螨属（膜翅目：Trichogrammatidae）的卵寄生虫是重要的天敌，已成功地用于生物防治计划中，并且大多饲养在地中海粉蛾Epshestia kuehniella（Zeller）（鳞翅目：Pyralidae）上。宿主质量是决定寄生性寄生虫适应性的关键因素。进行了实验室研究，以评估3种不同的幼虫饮食CY饮食（95％玉米粉+ 5％酵母），CBGY饮食（53.3％玉米粉+ 26.7％麦麸+ 15％甘油+ 5％酵母）和WBGY饮食的影响（53.3％的小麦粉+ 26.7％的麦麸+ 15％的甘油+ 5％的酵母）在大肠埃希氏菌的某些人口统计参数上。此外，确定了在3种人工饮食下饲养的库氏大肠杆菌卵上饲养的黑眼线虫物种的性能。对于E。在库氏菌饲养中，CY饮食具有较高的繁殖力和较高的出苗率。然而，CY饮食还提供了更短的发育时间，更大的繁殖力以及相对更高的后代寄生虫的雌性比例。结果表明，CY饮食可被认为是evascenss多代饲养的标准饮食。