Table 5 Demographic parameters of F1 and F4 generations of M. persicae following exposure to sublethal dose of pyrethroids.

From: Evaluation of Insecticides induced hormesis on the demographic parameters of Myzus persicae and expression changes of metabolic resistance detoxification genes

Parameters

Original

Bootstrap (±SE)

Control

Deltamethrin

Lambda Cyhalothrin

Control

Deltamethrin

Lambda Cyhalothrin

F1

F4

F1

F4

F1

F4

F1

F4

r (/day)a

0.304

0.291

0.278

0.287

0.285

0.303 ± 0.006

0.291 ± 0.006

0.278 ± 0.004*

0.286 ± 0.007

0.285 ± 0.006*

λ (/day)b

1.35

1.34

1.32

1.33

1.33

1.35 ± 0.008

1.34 ± 0.008

1.32 ± 0.006*

1.33 ± 0.009

1.33 ± 0.008*

T (days)c

11.7

12.1

13.0

12.4

12.4

11.7 ± 0.123

12.1 ± 0.116*

13.0 ± 0.120*

12.4 ± 0.162*

12.4 ± 0.138*

Ro (offspring/individual)d

35.4

34.3

37.8

35.0

34.6

35.3 ± 2.06

34.3 ± 2.19

37.7 ± 1.85

35.0 ± 2.37

34.6 ± 2.20

GRR (offspring/individual)e

43.0

41.7

43.0

47.0

44.0

43.0 ± 0.78

41.7 ± 0.757

43.0 ± 0.564

47.0 ± 1.13*

44.0 ± 0.929

  1. Data presented in table are mean ± SE, while the symbol (*) is used to denote significant difference (P < 0.05). aIntrinsic rate of increase; bFinite rate of increase; cGeneration time; dNet reproductive rate; eGross reproductive rate.
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