Performance of Propylea japonica on different diets.

Life-table parameters (± SE) of P. japonica larvae when fed exclusively with aphids or pollen or when fed pollen during the first day of each larval staged and then subsequently received pollen and soybean aphids until development into the next instar. Number of replicates is given in parentheses. Different letters following means in the same row denote significant difference between treatments.aχ2 test (pupation rate: Bonferroni correction lead to adjusted α = 0.017).bMann-Whitney U-test (larval development time: Bonferroni correction lead to adjusted α = 0.017).cStudent’s t-test.