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Table 1 Effect of using cold-stored S. cerealella eggs on the efficacy of Trichogramma evanescens

From: Effect of different cold storage periods of rearing host eggs on the performance of the parasitoid Trichogramma evanescens (Westwood) (Hymenoptera: Trichogrammatidae)

Cold storage periods Number of parasitized eggs/female % parasitism % emergence % females Female longevity (days)
Control 48.44 ± 0.58a 96.44 ± 5.08a 96.92 ± 6.47a 70.04 ± 1.68a 4.36 ± 0.64a
5 days 45.04 ± 0.95b 90.08 ± 0.87b 94.85 ± 2.19a 65.91 ± 0.66b 4.04 ± 0.68ab
10 days 42.86 ± 4.33c 85.72 ± 1.11c 84.91 ± 5.03c 62.92 ± 0.89c 3.84 ± 0.68b
15 days 30.62 ± 1.27d 61.24 ± 1.51d 80.48 ± 0.66d 60.85 ± 1.21d 3.44 ± 0.69c
20 days 24.54 ± 1.44e 49.08 ± 2.03e 61.17 ± 1.54e 51.64 ± 2.50e 2.8 ± 0.51d
30 days 10.22 ± 4.65f 20.44 ± 1.47f 50.73 ± 4.17f 48.46 ± 7.16f 2.48 ± 0.41d
  1. Means followed by the same letter, in the same column, are not significantly different. (Duncan’s multiple range tests) (Duncan 1955)