Assessment of the Lethal and Parasitism Effects of Helicoverpa armigera Nucleopolyhedrovirus (HaNPV) on Trichogramma chilonis (Ishii) (Hymenoptera: Trichogrammatidae)
Muhammad Ashraf Khan1, Hizbullah Khan1, Abid Farid2
... treated with water. The parasitism rates by female parasitic wasps emerged from host eggs treated at x dose when parasitoid was during egg, larval, and pupal stages were 21.6, 26.5, and 25.1%, respectively; the 2x dose resulted in parasitism (mean) of 23.1, 27.6, and 26.1 when parasitoids were treated in egg, larval, and pupal stages, respectively, while, 0.5x dose led to 21.0, 25.9, 27.7, mean para...
Solenopsis invicta Suppress Native Ant by Excluding Mutual Exploitation from the Invasive Mealybug, Phenacoccus solenopsis
Ai Ming Zhou1,2, Guang Wen Liang2, Ling Zeng2, Yong Yue Lu2 and Yi Juan Xu2*
...antly increased, and the parasitism of mealybug was obviously decreased, both in fire ant-infested plots and in fire ant-free plots. Colony growth rate of mealybug in fire ant-infested plots was greater than fire ant-free plots. These results suggest that S. invicta suppresses the exploitation of honeydew-producing hemipterans by ghost ant and occupies most of the honeydew resource.