Table 4 Stage-specific life table of H. dimidiata on R. padi at 28 ± 1 °C
Stage X | lx | Dx | lx | 100 qx | Sx | Tx | MSR | IM | Log lx | ex | k-values |
|---|---|---|---|---|---|---|---|---|---|---|---|
Egg | 100 | 15 | 87.5 | 15 | 0.75 | 415 | 0.22 | 6.91 | 2 | 4.15 | 0.125 |
1st instar | 75 | 11 | 69.5 | 14.67 | 0.85 | 327.5 | 0.18 | 5.82 | 1.88 | 4.37 | 0.069 |
2nd instar | 64 | 7 | 60.5 | 10.94 | 0.89 | 258 | 0.13 | 4.15 | 1.81 | 4.03 | 0.051 |
3rd instar | 57 | 6 | 54 | 10.53 | 0.89 | 197.5 | 0.12 | 3.92 | 1.76 | 3.46 | 0.048 |
4th instar | 51 | 4 | 49 | 7.84 | 0.92 | 143.5 | 0.09 | 2.98 | 1.71 | 2.81 | 0.035 |
Pre-pupa | 47 | 8 | 43 | 17.02 | 0.83 | 94.5 | 0.23 | 7.21 | 1.67 | 2.01 | 0.081 |
Pupa | 39 | 7 | 35.5 | 17.95 | 0.82 | 51.5 | 0.44 | 14.0 | 1.59 | 1.32 | 0.086 |
Adult | 32 | 32 | 16 | 1.51 | K = 0.495 |