Efficacy of climatic change on the development of two strains of stalk borer, Ostrinia nubilalis (Lepidoptera: Crambidae), treated with challenger/silica nanoparticles

Bulletin of the National Research Centre

Table 3 Life table parameters for Ostrinia nubilalis under different constant temperature

Temp.	Intrinsic rate (r_m)	Net reproductive rate (R₀) Female/female/egg	Generation time (day)	Finite rate of increase Female/female/egg	Doubling time (day)
Sharqia
15 °C	0.02 ± 0.003	55.11 ± 1.218	180.10 ± 1.893	0.99 ± 0.066	43.01 ± 0.881
25 °C	0.10 ± 0.017	49.95 ± 1.020	166.90 ± 1.613	1.10 ± 0.083	40.00 ± 0.832
35 °C	0.09 ± 0.015	109.99 ± 2.456	70.54 ± 0.903	1.12 ± 0.044	19.92 ± 0.350
45 °C	0.14 ± 0.007	259.77 ± 2.193	59.61 ± 0.645	1.22 ± 0.124	8.66 ± 0.194
Qena
15 °C	0.154 ± 0.008	170.03 ± 1.109	70.10 ± 0.692	1.00 ± 0.0318	9.20 ± 0.411
25 °C	0.123 ± 0.006	165.44 ± 1.222	69.90 ± 0.738	1.016 ± 0.105	9.90 ± 0.236
35 °C	0.100 ± 0.016	120.43 ± 1.024	66.66 ± 0.925	1.029 ± 0.026	11.40 ± 0.232
v45 °C	0.910 ± 0.052	100.22 ± 1.156	54.40 ± 1.294	1.066 ± 0.032	13.20 ± 0.314