Table 2 Stage-specific life table of H. dimidiata on R. padi at 20 ± 1 °C
Stage X | lx | Dx | lx | 100qx | Sx | Tx | MSR | IM | Log lx | ex | k-values |
|---|---|---|---|---|---|---|---|---|---|---|---|
Egg | 100 | 11 | 94.5 | 11 | 0.89 | 535 | 0.13 | 7.42 | 2 | 5.35 | 0.051 |
1st instar | 89 | 12 | 83 | 13.48 | 0.87 | 440.5 | 0.16 | 8.96 | 1.95 | 4.95 | 0.063 |
2nd instar | 77 | 4 | 75 | 5.19 | 0.95 | 357.5 | 0.06 | 3.20 | 1.89 | 4.64 | 0.023 |
3rd instar | 73 | 6 | 70 | 8.22 | 0.92 | 282.5 | 0.09 | 5.13 | 1.86 | 3.87 | 0.043 |
4th instar | 67 | 3 | 65.5 | 4.48 | 0.96 | 212.5 | 0.04 | 2.51 | 1.83 | 3.17 | 0.02 |
Pre-pupa | 64 | 5 | 61.5 | 7.81 | 0.92 | 147.0 | 0.09 | 4.87 | 1.81 | 2.30 | 0.036 |
Pupa | 59 | 3 | 57.5 | 5.08 | 0.95 | 85.5 | 0.11 | 6.00 | 1.77 | 1.45 | 0.022 |
Adult | 56 | 56 | 28 | 1.75 | K = 0.258 |