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Table 2 Percentages of adults' emergences of T. bactrae from S. littoralis egg masses with different physical characteristics in a no-choice and choice tests

From: Efficacy of the parasitoid, Trichogrammatoidea bactrae Nagaraja (Hymenoptera: Trichogrammatidae) on the cotton leafworm, Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) egg masses

Egg masses No-choice Choice
Adult emergence percentage Overall average Adult emergence percentage Overall average
One layer with no scales 85.54 ± 1.81 Abc (60–100) 86.99 ± 1.92a 83.03 ± 4.88 Aab (50-100) 84.41 ± 2.92b
One layer with low scale density 89.61 ± 1.38 Aab (66.68–100) 89.42 ± 2.60 Aa (66.67–100)
One layer with mid scale density 87.02 ± 3.34 Aabc (60–96) 82.53 ± 4.04 Ab (66–100)
One layer with high scale density 85.79 ± 1.17 Abc (80–93.94) 82.65 ± 0.14 Ab (82–83.33)
Two layers with low scale density 91.43 ± 1.98 Aa (70–100) 87.28 ± 2.50a 91.14 ± 1.26 Aa (84.21–97.33) 88.99 ± 1.76a
Two layers with mid scale density 87.86 ± 2.02 Aabc (61.6–99.04) 86.11 ± 2.31 Aab (73.91–97.14)
Two layers with high scale density 82.55 ± 3.49 Abc (50–96.66) 89.71 ± 1.73 Aa (84–100)
Three layers with low scale density 82.22 ± 4.10 Ac (70–95.52) 75.3 ± 8.11a 70.20 ± 2.10 Bc (60–85) 59.51 ± 3.90c
Three layers with high scale density 75.63 ± 6.22 Ad (50–94.44) 52.82 ± 4.50 Bd (25–83.33)
  1. Means ± SE sharing the same small letters in the same columns and same capital letters in the rows are statistically insignificant
  2. P > 0.05. Numbers in parentheses represent the range