Impact of egg mass layers and scale thicknesses of the fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), on the parasitic performance of Trichogrammatoidea bactrae (Hymenoptera: Trichogrammatidae)

Egyptian Journal of Biological Pest Control

Table 2 Percentages of adults' emergences of Trichogrammatoidea bactrae from Spodoptera frugiperda egg masses on different layers’ and scales' thickness in non-choice and choice tests

Egg masses	Adult emergence (%)		t-test
Egg masses	Non-choice test	Choice test	P-value
One layer without scales	89.69 ± 0.61^cdB	92.49 ± 0.81^cdA	0.011
One layer with low scales' density	95.82 ± 0.98^aA	91.53 ± 2.81^bcdA	0.171
One layer with mid-scales' density	92.23 ± 1.85^bcA	90.95 ± 1.54^cdA	0.514
One layer with thick scales' density	87.94 ± 2.52^dA	88.23 ± 2.31^dA	0.933
Two layers with low scales' density	92.2 ± 1.62^bcdB	96.08 ± 0.87^abA	0.047
Two layers with mid-scales' density	96.36 ± 0.67 ^aA	94.82 ± 1.1^bcA	0.247
Two layers with thick scales' density	93.88 ± 1.37^abA	96.14 ± 0.37^bA	0.132
Three layers with low scales' density	88.71 ± 1.1^dB	98.03 ± 0.36^aA	< 0.0001
Three layers with mid-scales' density	91.71 ± 1.48^bcdA	94.42 ± 0.94^bcA	0.137
Three layers with thick scales' density	89.42 ± 1.23^cdA	90.13 ± 1.58^dA	0.727
F_(9,140)	4.456	4.409
P_ANOVA	< 0.0001	< 0.0001

Means ± SE sharing the same small letters in the same columns and same capital letters in the rows are statistically insignificant (P > 0.05)