TABLE 1.

Dose-mortality responses of neonate S. frugiperda and T. ni larvae infected orally with OBs of wt AcMNPV or ie-2 mutant viruses^a

Host and virus	LC50b (OBs/ml)	95% Fiducial limit		Slope (mean ± SE)	Heterogeneity factorc
		Upper	Lower
S. frugiperda
wt AcMNPV	2.6 × 105	4.2 × 105	1.5 × 105	1.148 ± 0.177	0.31
vie2d(94-274)	3.9 × 108	9.9 × 108	2.5 × 108	1.131 ± 0.224	0.34
vie2d(94-173)	3.1 × 108	5.2 × 108	2.0 × 108	1.142 ± 0.193	0.30
vie2d(215-274)	1.2 × 109	1.9 × 109	0.5 × 109	0.756 ± 0.210	0.12
T. ni
wt AcMNPV	1.4 × 104	1.8 × 104	1.0 × 104	2.941 ± 0.514	0.40
vie2d(94-274)	1.3 × 106	1.9 × 106	0.9 × 106	1.554 ± 0.225	0.42
vie2d(94-173)	1.8 × 106	2.8 × 106	0.8 × 106	1.715 ± 0.386	0.79
vie2d(215-274)	3.1 × 106	4.2 × 106	2.3 × 106	1.926 ± 0.249	0.16

^aSix groups of neonates (less than 12 h old) were allowed to feed on diet contaminated with various concentrations of OBs per ml for 24 h and then transferred to uncontaminated diet. The number of dead larvae at 10 days p.i. was used to determine the LC₅₀. 

^bValues were calculated by probit analysis. 

^cχ² divided by the degrees of freedom (POLO-PC; LeOra Software).