Table 3 Population growth parameters of C. vestalis parasitizing different larval instars of P. xylostella

Net reproductive rate (R_o) (female progeny/female)

48.3 ± 3.8^a

16.5 ± 1.6^b

6.2 ± 1.9^c

True intrinsic rate of increase (r_m) (females/female/day)

0.207 ± 0.008^a

0.156 ± 0.004^b

0.096 ± 0.01^c

True generation time (T) (days)

18.8 ± 1.4^a

18.0 ± 1.1^a

18.9 ± 1.9^a

Finite rate of natural increase (λ) (females/day)

1.230 ± 0.02^a

1.168 ± 0.05^b

1.101 ± 0.08^c

Doubling time (DT) (days)

3.4 ± 0.3^a

4.5 ± 0.2^b

7.2 ± 0.5^c

Weekly multiplication rate (WM) (folds)

4.25 ± 0.48^a

2.97 ± 0.24^b

1.95 ± 0.26^c