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Table 4 Sublethal effects of LC30 values of five Bt strains/Cry proteins on certain biological aspects of Tribolium castaneum

From: Efficiency of Bacillus thuringiensis strains and their Cry proteins against the Red Flour Beetle, Tribolium castaneum (Herbst.) (Coleoptera: Tenebrionidae)

Biological aspectsBt strains/Cry protein
20140919KYYT015
Cry3Aa
20150420LHMT145
Cry37Aa
20141126CLLT002
Cry22Aa
20131204YWYT028
Cry51Aa
20140728LTT243
Cry3Ba
Control
Total eggs laid by T. castaneum
female during two weeks
418.66 ± 7.78F520.16 ± 8.97E581.5 ± 8.97D650.16 ± 4.07C693.33 ± 5.50B846.66 ± 7.08A
Percent decrease in egg numbers50.5538.5631.3123.2018.10
Total eggs hatching per female
during two weeks
329.50 ± 8.40F426.16 ± 5.98E481.16 ± 4.44D555.66 ± 4.32C622.50 ± 4.63B804.16 ± 8.10A
Hatchability rate of eggs78.70 %81.92 %82.7485.4689.7894.98 %
Pre-oviposition period (day)6.83 ± 0.75A6.12 ± 0.75AB5.60 ± 0.89BC5.33 ± 1.03BCD4.16 ± 0.75CD4.66 ± 0.51CD
Incubation period of eggs (day)3.50 ± 0.54C4.50 ± 0.54B5.16 ± 0.98AB5.83 ± 0.98A6.00 ± 0.75A5.16 ± 0.75AB
Larval stage duration (day)21.16 ± 1.03C22.16 ± 2.99BC23.83 ± 1.04AB25.50 ± 1.04A25.83 ± 1.21A24.66 ± 0.81A
Pupal stage duration (day)3.83 ± 0.75D4.50 ± 0.83BCD5.33 ± 1.03ABC5.83 ± 0.75AB6.33 ± 0.51A4.83 ± 0.75C
Total development period of
immature stages (day)
28.6631.1633.9937.1638.1334.65
  1. Means followed by the same letter in a row are not significantly different at 0.05 level of probability
  2. Letters above each treatment indicate significance between various Bt strains and control. Treatments with the same letter are not significantly different