Biology of the Mealybug Phenacoccus madeirensis and its interaction with the host plant
MetadataShow full item record
The biology of the mealybug, Phenacoccus madeirensis Green, was studied in various temperature regimes, and in the combinations of elevated carbon dioxide (CO2) levels and temperature. The total duration of development of female P. madeirensis was 30 days at 25 C, 46 days at 20 C, and 66 days at 15 C. Males had longer duration of development than females. Survival rates of both males and females were not influenced by temperature. A female produced more than 280 eggs in every temperature regime. In an environment of elevated CO2 levels and temperature, the development of P. madeirensis was temperature-dependent. Duration of development was shortened in higher temperature. Elevated CO2 levels had no effect on the development of P. madeirensis. The effects of feeding by P. madeirensis on the whole-plant gas exchange of chrysanthemum were also studied. Mealybug population of less than 100 individuals did not cause noticeable damage to host plant gas exchange processes.