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Table 1 Duration of adult longevity and total life span (d), sex ratio (female ratio) and fecundity (eggs) of sequential generations of Trichogramma embryophagum reared on Sitotroga cerealella eggs

From: How long-term mass rearing affects the quality of the Trichogramma embryophagum (Hartig) (Hymenoptera: Trichogrammatidae) reared on Sitotroga cerealella (Olivier) eggs

No. generation Number of individuals Adult longevity (Female) Adult longevity (Male) Total life span (Female) Oviposition days Sex ratio % (Female/total) Fecundity
5 76 7.98 ± 0.36a 6.54 ± 0.40a 18.40 ± 0.38a 5.83 ± 0.19a 63.16 60.50 ± 2.35a
10 69 7.32 ± 0.42ab 6.07 ± 0.48ab 18.22 ± 0.38a 5.30 ± 0.28ab 59.42 52.71 ± 2.81b
15 64 7.08 ± 0.37abc 6.04 ± 0.51ab 17.83 ± 0.40ab 4.89 ± 0.25bc 56.25 43.97 ± 1.99c
20 71 6.54 ± 0.38bc 5.31 ± 0.46bc 16.95 ± 0.41bc 4.51 ± 0.21c 54.93 35.72 ± 2.02d
25 74 6.22 ± 0.31 cd 5.24 ± 0.31bc 16.68 ± 0.41cde 4.36 ± 0.19c 55.41 29.66 ± 1.59e
28 67 5.45 ± 0.31de 4.45 ± 0.42c 16.13 ± 0.32cde 3.78 ± 0.17d 56.71 27.76 ± 1.59ef
30 72 5.68 ± 0.21de 4.66 ± 0.37c 15.92 ± 0.26de 3.74 ± 0.09d 51.39 26.81 ± 1.21ef
32 75 5.55 ± 0.23de 4.22 ± 0.39c 15.82 ± 0.24e 3.55 ± 0.13d 50.67 24.89 ± 1.02 fg
34 76 5.50 ± 0.31de 4.42 ± 0.32c 15.74 ± 0.24e 3.75 ± 0.18d 50.00 22.66 ± 1.27gh
37 71 5.43 ± 0.28de 4.38 ± 0.32c 15.51 ± 0.25e 3.69 ± 0.16d 52.11 20.43 ± 1.30 h
40 73 5.19 ± 0.40e 4.22 ± 0.33c 15.35 ± 0.42e 3.53 ± 0.16d 49.31 19.24 ± 1.88 h
  1. The means marked by the same letters within the same column are not significantly different (Paired-bootstrap test, P < 0.05)