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Table 3 Effects of gamma irradiation of S. cerealella eggs (different rates) on T. evanescens parasitism, emergence rate and sex-ratio (F1 generation)

From: Cold storage and gamma irradiation of Sitotroga cerealella Olivier eggs (Lepidoptera: Gelechiidae) in relation to the success of parasitism by Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae)

Dose (Gy)

No. of exposed eggs (mean ± S.E)

% of parasitism

% of emergence

% sex- ratio (female)

Control

6123.3 ± 0.33

96.80 ± 0.06a

98.0 ± 0.07a

94.00 ± 0.33a

40 GY

5511.7 ± 0.88

96.70 ± 0.52a

97.5 ± 0.07a

92.33 ± 0.33a

60 GY

4897.7 ± 0.33

96.10 ± 0.37a

97.20 ± 0.62a

85.30 ± 0.58ab

80 GY

4797.3 ± 0.67

95.90 ± 0.58a

97.13 ± 0.62a

84.6 ± 0.57ab

100 GY

4285.0 ± 0.10

95.24 ± 0.95a

96.57 ± 0.57a

81.67 ± 0.58b

P

 

0.2919ns

0.5172ns

0.0115

F

1.43608

0.865078

5.74014

df

14

14

14

  1. a, b, & c: There is no significant difference (P > 0.05) between any two means, within the same column have the same superscript letter.