The virulence of the entomopathogenic fungi on the predatory species, Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae) under laboratory conditions

Egyptian Journal of Biological Pest Control

Table 6 Population and reproductive measurements of Cryptolaemus montrouzieri females

Parameters	Control	B. bassiana	M. anisopliae
R ₀	338.82	155.99	115.55
T	43.76	60.95	76.78
r _m	0.13	0.08	0.06
λ	1.14	1.08	1.06
D _T	5.33	8.66	11.55
∑ M _x	574.90	431.39	360.40

R_o the final propagation rates; R_o = Σ l_xm_x, T average generation period; T = ln R_o/r_m; r_m the instinctive ability for the augmentation, r = ln R_o/T; λ the limited average of augmentation, λ = e^r; D_T twice the amount time, the number of days required by a population to double, D_T = ln2/r_m; ∑ M_x overall reproduction rate