Table 2 Population growth parameters of S. pyrastri on cabbage aphid, B. brassicae
Population growth parameters | Mean ± SE |
|---|---|
Gross reproductive rate (offspring per individual) (GRR) | 18.01 ± 4.64 |
Net reproductive rate (Ro) | 15.10 ± 4.19 |
Intrinsic rate of increase (r) | 0.093 ± 0.011 |
Finite rate of increase (day−1) (λ) | 1.098 ± 0.012 |
True generation time (days) (T) | 28.62 ± 0.28 |
Doubling time (days) (DT) | 7.37 ± 1.18 |