Effects of Pyriproxyfen on Life Table Indices of Plutella xylostella in Multigenerations
Table 4
The effects of sublethal concentrations of pyriproxyfen on preoviposition, ovipostion, and postoviposition periods and adult longevity of P. xylostella in parent and offspring generations.
Generations
Stages
Mean SE (day)
F
P
df
Control
LC10
LC25
Parent
APOP
2.13 ± 0.66
5.13 ± 1.11
7.73 ± 2.25
1.94
0.1558
2, 42
Oviposition
11.26 ± 0.95
5.73 ± 1.13
4.06 ± 0.90
14.14
<0.0001
2, 42
Postoviposition
0.86 ± 0.30
1.66 ± 0.39
1.73 ± 0.80
0.92
0.4057
2, 42
Male adult longevity
20.07 ± 1.98
17.46 ± 1.14
15.73 ± 1.54
1.87
0.1662
2, 42
Female adult longevity
14.26 ± 1.16
12.53 ± 1.05
13.53 ± 1.81
0.40
0.6759
2, 42
Offspring
APOP
4.13 ± 0.78
6.45 ± 1.56
4.55 ± 1.67
1.26
0.2926
2, 48
TPOP
13.17 ± 0.26
22.63 ± 1.51
21.33 ± 2.04
48.78
<0.0001
2, 48
Oviposition
10.65 ± 0.89
7.18 ± 2.00
4.44 ± 1.49
5.48
0.0074
2, 48
Postoviposition
2.06 ± 0.57
1.27 ± 0.35
1.33 ± 1.21
0.41
0.6636
2, 48
Male adult longevity
16.60 ± 1.27
13.50 ± 1.18
20.71 ± 4.42
2.48
0.0421
2, 48
Female adult longevity
16.62 ± 1.20
14.90 ± 1.87
10.33 ± 2.32
4.97
0.0111
2, 48
A: means marked with the same letters within a row are not significantly different (Tukey’s test; P < 0.05). B: adult preoviposition period, time between adult emergence and first oviposition. C: total preoviposition period, time from birth to first reproduction in female.