Effect of cold storage temperature on quality of the parasitoid, Trichogrammatoidea bactrae Nagaraja (Hymenoptera: Trichogrammatidae)

Egyptian Journal of Biological Pest Control

Table 10 Percentages of Trichogrammatoidea bactrae females in parental and F₁ generations after storage of parasitoid pupae at different low temperatures

Storage period (weeks)	Females (%)
	(a) Parental generation			(b) F₁ progeny
	4 °C	7 °C	10 °C	4 °C	7 °C	10 °C
Control	86.89 ± 0.84A			89.37 ± 0.68A
1	84.00 ± 1.37Aa	71.12 ± 1.37Cb	85.89 ± 1.00Aa	89.25 ± 1.89Aa	67.5 ± 0.96Db	90.12 ± 1.37Aa
2	82.44 ± 0.72Ba	70.00 ± 2.64Cb	83.44 ± 0.46ABa	89.62 ± 1.02Aa	71.75 ± 1.61BCb	88.87 ± 1.17Aa
3	81.22 ± 0.75Cab	78.12 ± 1.52Bb	82.89 ± 0.95Ba	89.50 ± 0.80Aa	74.00 ± 0.33Bc	86.00 ± 0.27Bb
4	76.67 ± 1.12Db	66.75 ± 1.47Dc	79.11 ± 0.46CDa	81.50 ± 1.03Ba	69.62 ± 1.31Cc	76.37 ± 0.92Db
5	81.33 ± 0.23Ca	71.25 ± 0.36Cc	79.00 ± 1.11CDb	64.00 ± 2.72Cc	71.00 ± 0.65Cb	79.37 ± 0.62Ca
6	75.44 ± 0.29Eb	70.00 ± 0.00CDc	80.00 ± 0.41Ca	58.75 ± 1.42Db	71.87 ± 0.85BCa	76.62 ± 2.07Da
7	81.33 ± 0.32Ca	66.75 ± 3.25Dc	80.11 ± 0.41Cb	51.50 ± 0.42Ec	71.25 ± 1.30Cb	80.25 ± 1.36Ca
8	78.33 ± 1.23Da	65.12 ± 3.31DEb	77.89 ± 0.88Da	–	71.37 ± 0.62Cb	86.87 ± 0.29Ba
9	58.89 ± 0.22Fa	65.00 ± 0.50Ea	63.25 ± 0.16Eb	–	57.87 ± 1.90E	–

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