关键词: 黑点切叶野螟（Herpetogramma basalis）, 人工饲料, 空心莲子草（Alternanthera philoxeroides）, 生长发育, 繁殖

Abstract: To solve the seasonal shortage of natural diet of biocontrol insect,the development and reproduction of Herpetogramma basalis on artificial diets were studied under laboratory conditions,compared with the natural diet Alternanthera philoxeroides,the most important host plant of biocontrol insect H. basalis. The results indicated that H. basalis could be successfully reared on all three artificial diets. But most developmental and reproductive index showed significant differences among artificial diets and natural diets. Under the three artificial diets,the larval duration was prolonged,the emergence rate decreased,the adult life shortened,and the female fecundity decreased. Under artificial diets Ⅰand Ⅱ,the survival rate of larvae decreased and the pupal stage prolonged obviously. The pupal weight and hatching rate were significantly decreased under diet Ⅰ. The pupation rate and sex ratio had no significant difference compared with the control. In summary,artificial diet Ⅲ was the best one in this study and it should be optimized in subsequent studies to ensure that more suitable artificial diet could be provided during the natural feed shortage period of the biocontrol insect.

Key words: Herpetogramma basalis, artificial diet, Alternanthera philoxeroides, development, reproduction