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Table 3 Parasitism parameters 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

Net parasitism rate (c0) (hosts/parasitoid)

Transition rate values (Qp)

Stable parasitism rate (ψ) (host/parasitoid)

Finite parasitism rate (ω) (host/parasitoid)

5

38.21 ± 3.65a

1

0.348 ± 0.016a

0.468 ± 0.026a

10

31.32 ± 3.53ab

1

0.317 ± 0.017ab

0.417 ± 0.027ab

15

24.73 ± 2.96bc

1

0.298 ± 0.018bc

0.386 ± 0.028bc

20

19.62 ± 2.36 cd

1

0.284 ± 0.017bcd

0.363 ± 0.026bcd

25

16.43 ± 1.93de

1

0.267 ± 0.016cde

0.335 ± 0.023cde

28

15.75 ± 1.90def

1

0.261 ± 0.016cde

0.326 ± 0.023cde

30

13.78 ± 1.68efg

1

0.254 ± 0.017cde

0.316 ± 0.024cde

32

12.61 ± 1.53efg

1

0.249 ± 0.017de

0.309 ± 0.024de

34

11.33 ± 1.45 fg

1

0.243 ± 0.018de

0.299 ± 0.025de

37

10.65 ± 1.37 g

1

0.238 ± 0.017de

0.292 ± 0.024e

40

9.75 ± 1.48 g

1

0.226 ± 0.018e

0.274 ± 0.026e

  1. The means marked by the same letters within the same column are not significantly different (Paired-bootstrap test, P < 0.05)