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 3 Percentages of Trichogrammatoidea bactrae females emerged from Spodoptera frugiperda egg masses on different layers’ and scales' thickness in non-choice and choice tests

Egg masses	Female (%)		t-test
Egg masses	Non-choice test	Choice test	P-value
One layer without scales	74.5 ± 2.02^aA	67.75 ± 1.12^bB	0.011
One layer with low scales' density	69.8 ± 1.87^abB	77.18 ± 1.55^aA	0.007
One layer with mid-scales' density	71.00 ± 0.93^abA	75.75 ± 3.06^aA	0.164
One layer with thick scales' density	62.00 ± 2.11^cB	74.00 ± 2.79^aA	0.003
Two layers with low scales' density	70.1 ± 1.12^abA	72.27 ± 1.72^aA	0.304
Two layers with mid-scales' density	70.9 ± 0.98^abB	76.57 ± 1.68^aA	0.01
Two layers with thick scales' density	69.7 ± 1.53 ^abB	76.75 ± 1.60^aA	0.005
Three layers with low scales' density	67.8 ± 2.07^bcB	77.00 ± 0.40^aA	0.001
Three layers with mid-scales' density	68.4 ± 1.54^bA	73.18 ± 1.78^aA	0.057
Three layers with thick scales' density	69.2 ± 1.31^bB	76.14 ± 1.26^aA	0.001
F_(9,100)	3.865	2.583
P_ANOVA	0.0003	0.01

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