Table 11 Biological parameters of E. formosa on different nymphal instars of T. vaporariorum in different host–parasitoid proportion
Host–parasitoid ratio* | Developmental duration (days) (mean ± SE) of the parasitoid stage | ||
|---|---|---|---|
Egg–larval | Pupal | Egg–adult | |
5:1 | 7.6 ± 0.7 | 7.5 ± 0.9 | 15.1 ± 0.8 |
10:1 | 7.6 ± 0.6 | 7.8 ± 0.7 | 15.3 ± 0.1 |
20:1 | 7.7 ± 0.6 | 7.8 ± 0.8 | 15.4 ± 0.5 |
40:1 | 7.7 ± 0.6 | 7.5 ± 0.7 | 15.2 ± 0.3 |
80:1 | 7.6 ± 0.1 | 7.7 ± 0.2 | 15.3 ± 0.2 |
LSD(P=0.05) | NS | NS | NS |
F4, 24 | 0.08 | 0.18 | 0.54 |
P value | 0.988 | 0.947 | 0.707 |