Population parameters and growth of Myzus persicae Sulzer (Hemiptera: Aphididae) under elevated CO₂ concentrations in the air

Abstract

The effects of three different CO2 concentrations (400, 600, and 1000 ppm) on the population parameters and growth of the green peach aphid, Myzus persicae, were examined. Raw life history data from M. persicae were analyzed using an age‐stage, two‐sex life table to take into account the viable development rate among individuals. The population projections of M. persicae indicate the stage structure and variability of the population growth under different CO2 concentrations based on an age‐stage, two‐sex life table analysis. Significantly longer oviposition duration and higher fecundity were observed under elevated CO2 (600 and 1000 ppm) than those under ambient CO2 (400 ppm). Furthermore, the M. persicae population reared under elevated CO2 concentrations showed higher intrinsic and finite rates of population increase than under ambient CO2 concentrations. These results indicate that the population parameters and growth of M. persicae were positively influenced in the fecundity by elevated CO2 concentrations relative to the ambient CO2. These findings indicate that it is basically remained to understand the direct effects of CO2 elevation on the host plants, and the interaction between the host plants and M. persicae in the same CO2 concentration for establishing more realistic population growth model systems for M. persicae in the aerial environment rising CO2 concentration level.