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Table 1 Changes in morphobiological parameters (mean ± SD) of the predator C. montrouzieri for 12 inbreeding generations using three genetic improved lines

From: A selection index of multiple quantitative traits of the predator Cryptolaemus montrouzieri (Mulsant) (Coleoptera: Coccinellidae) through 12 inbreeding generations

Parameter Generations Control line First genetic improved line
(Fec.)
Second genetic improved line
(PPLI)
Third genetic improved line
(LdP)
Female length (mm) Po 4.58 ± 0.41 a A 4.51 ± 0.48 b A 4.64 ± 0.26 a A 4.49 ± 0.50 a A
F1 4.32 ± 0.53 ab B 4.68 ± 0.25 b A 4.33 ± 0.37 b B 4.27 ± 0.44 ab B
F3 4.13 ± 0.56 bc B 4.90 ± 0.25 a A 3.95 ± 0.55 c B 3.99 ± 0.39 bc B
F6 3.97 ± 0.50 c B 4.91 ± 0.31 a A 3.86 ± 0.66 c B 3.81 ± 0.41 c B
F9 3.90 ± 0.39 c B 4.93 ± 0.27 a A 3.94 ± 0.37 c B 3.93 ± 0.31 c B
F12 3.81 ± 0.45 c B 4.94 ± 0.26 a A 3.89 ± 0.48 c B 3.83 ± 0.44 c B
ID%/parameter response for each line at the end of 12th − 16.81 + 9.53 − 16.16 − 14.70
Fecundity Po 134.97 ± 31.68 a A 138.20 ± 21.88 f A 131.40 ± 39.76 a A 149.70 ± 35.89 a A
F1 126.87 ± 33.43 a B 157.83 ± 15.03 d A 124.67 ± 34.47 ab B 128.53 ± 39.12 b B
F3 107.83 ± 22.46 b B 171.90 ± 14.13 c A 108.23 ± 36.47 bc B 113.83 ± 25.77 bcB
F6 94.77 ± 15.77 bc B 182.90 ± 13.50 b A 99.23 ± 24.70 c B 98.47 ± 19.73 c B
F9 87.90 ± 13.32 cd B 187.93 ± 13.25 ab A 96.77 ± 24.81 c B 97.17 ± 22.10 c B
F12 78.07 ± 12.75 d C 194.80 ± 15.45 a A 95.07 ± 16.86 c B 95.37 ± 16.13 c B
ID%/parameter response for each line at the end of 12th − 42.28 + 40.96 − 27.65 − 36.29
Reproduction Po 121.97 ± 32.73 a A 126.43 ± 23.94 d A 117.80 ± 39.16 a A 137.90 ± 38.78 a A
F1 113.63 ± 34.44 a B 142.67 ± 17.88 c A 110.80 ± 35.31 ab B 113.77 ± 41.07 b B
F3 93.57 ± 21.84 b B 157.33 ± 14.63 b A 92.97 ± 37.79 bc B 96.40 ± 29.99 bc B
F6 80.03 ± 15.85 bc B 165.77 ± 14.42 ab A 82.15 ± 28.02 c B 78.50 ± 26.83 c B
F9 73.20 ± 14.92 c B 166.67 ± 14.96 ab A 80.53 ± 24.87 c B 76.73 ± 20.75 c B
F12 64.73 ± 11.71 c C 174.20 ± 13.96 a A 78.03 ± 17.89 75.40 ± 17.78 c B
ID%/parameter response for each line at the end of 12th generation − 46.93 + 37.78 − 33.76 − 45.32
% Survival rate Po 89.74 ± ±3.79 a A 91.12 ± 3.86 a A 88.63 ± 7.57 a A 91.24 ± 5.22 a A
F1 88.75 ± 4.09 a A 90.21 ± 3.95 a A 87.90 ± 6.82 a A 87.12 ± 6.76 ab A
F3 86.41 ± 4.54 ab A 91.5 ± 3.23 a A 84.53 ± 7.66 ab A 83.62 ± 8.75 bc A
F6 84.19 ± 5.36 b B 90.61 ± 3.48 a A 82.15 ± 9.32 b BC 78.13 ± 12.32 c C
F9 83.04 ± 7.81 b B 88.68 ± 4.56 a A 82.55 ± 6.55 b B 78.82 ± 8.02 c B
F12 82.87 ± 6.82 b B 89.22 ± 5.62 a A 81.71 ± 7.42 b B 78.38 ± 9.42 c B
ID%/parameter response for each line at the end of 12th − 7.66 − 2.09 − 7.81 − 14.09
Preying potential of 3rd larval instar (P. citri nymphs/day) Po 27.06 ± 3.45 a A 24.69 ± 3.45 a A 24.20 ± 3.41 d A 27.73 ± 2.23 a A
F1 25.32 ± 2.78 ab A 23.33 ± 2.55 ab B 25.46 ± 2.92 cd A 26.42 ± 3.10 ab A
F3 23.77 ± 2.86 bc B 21.88 ± 2.41 bc C 27.03 ± 2.20 bc A 24.78 ± 3.45 abc B
F6 22.29 ± 3.06 cd B 20.52 ± 3.35 c C 28.04 ± 1.73 b A 24.67 ± 3.42 abc B
F9 21.80 ± 3.44 cd C 20.72 ± 3.17 c C 28.18 ± 1.83ab A 23.80 ± 2.40 c B
F12 21.42 ± 3.25 d C 20.78 ± 2.42 c C 29.72 ± 1.36 a A 24.05 ± 2.70 c B
ID%/parameter response for each line at the end of 12th generation − 20.84 − 15.84 + 22.81 − 13.27
Preying potential of female (P. citri nymphs/day) Po 37.54 ± 7.83 a A 35.82 ± 3.74 a A 36.31 ± 5.89 a A 35.82 ± 3.74 a A
F1 35.28 ± 3.80 ab A 34.21 ± 4.85 a A 35.68 ± 4.02 a A 35.43 ± 4.28 a A
F3 33.38 ± 3.20 bc BC 31.07 ± 4.73 b C 36.40 ± 4.38 a A 34.30 ± 3.96 ab AB
F6 32.40 ± 3.10 bcd B 26.48 ± 4.90 c C 36.83 ± 5.26 a A 32.48 ± 3.45 bc B
F9 31.85 ± 3.04 cd B 26.33 ± 4.41 c C 36.39 ± 4.37 a A 31.62 ± 3.84 c B
F12 29.39 ± 3.19 d B 25.86 ± 4.64 c C 36.61 ± 4.38 a A 31.76 ± 1.43 bc B
ID%/parameter response for each line at the end of 12th generation − 21.71 − 27.81 + 0.83 − 11.33
Larval developmental period (Ll–L4) Po 14.87 ± 2.08 a A 13.87 ± 2.30 a A 13.63 ± 1.77 a A 12.17 ± 1.70 c B
F1 13.97 ± 1.69 ab A 13.53 ± 1.61 ab A 12.93 ± 1.78 ab A 13.77 ± 1.76 b A
F3 13.53 ± 1.61 bc B 13.20 ± 1.69 ab BC 12.17 ± 1.34 b C 14.80 ± 1.69 ab A
F6 12.93 ± 1.66 bc B 12.40 ± 1.45 b B 12.23 ± 1.50 b B 14.83 ± 1.15 ab A
F9 12.70 ± 1.90 bc B 12.37 ± 1.52 b B 12.20 ± 1.37 b B 14.73 ± 1.05 ab A
F12 12.63 ± 1.61 c B 12.33 ± 1.54 b B 12.33 ± 1.40 b B 15.07 ± 1.55 a A
ID%/parameter response for each line at the end of 12th generation − 15.06 − 11.10 − 9.54 + 23.83
Developmental period
(Egg-adult)/days
Po 30.53 ± 2.21 a A 30.30 ± 2.22 a A 29.10 ± 2.60 b A 29.63 ± 2.06 b A
F1 30.77 ± 2.11 a A 30.80 ± 1.99 a A 29.53 ± 2.32 b A 30.23 ± 2.30 ab A
F3 30.23 ± 1.77 a A 30.20 ± 2.70 a A 29.97 ± 1.83 ab A 31.23 ± 2.13 a A
F6 30.17 ± 1.84 a A 30.77 ± 2.62 a A 30.43 ± 1.76 ab A 31.27 ± 2.08 a A
F9 30.10 ± 2.40 a A 31.00 ± 1.31 a A 31.20 ± 1.88 a A 31.13 ± 1.66 a A
F12 30.13 ± 2.69 a A 31.10 ± 1.27 a A 31.27 ± 2.32 a A 31.43 ± 1.43 a A
ID%/parameter response for each line at the end of 12th generation − 1.31 + 2.64 + 7.46 + 6.07
  1. N = 30. Means followed by the same small letter in a column are not significantly different at 1% level of probability. Means followed by the same capital letter in a row are not significantly different at 1% level of probability