Research Article

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.

GenerationsStages Mean SE (day)F Pdf
ControlLC10LC25

ParentAPOP2.13 ± 0.665.13 ± 1.117.73 ± 2.251.940.15582, 42
Oviposition11.26 ± 0.955.73 ± 1.134.06 ± 0.9014.14<0.00012, 42
Postoviposition0.86 ± 0.301.66 ± 0.391.73 ± 0.800.920.40572, 42
Male adult longevity20.07 ± 1.9817.46 ± 1.1415.73 ± 1.541.870.16622, 42
Female adult longevity14.26 ± 1.1612.53 ± 1.0513.53 ± 1.810.400.67592, 42

OffspringAPOP4.13 ± 0.786.45 ± 1.564.55 ± 1.671.260.29262, 48
TPOP13.17 ± 0.2622.63 ± 1.5121.33 ± 2.0448.78<0.00012, 48
Oviposition10.65 ± 0.897.18 ± 2.004.44 ± 1.495.480.00742, 48
Postoviposition2.06 ± 0.571.27 ± 0.351.33 ± 1.210.410.66362, 48
Male adult longevity16.60 ± 1.2713.50 ± 1.1820.71 ± 4.422.480.04212, 48
Female adult longevity16.62 ± 1.2014.90 ± 1.8710.33 ± 2.324.970.01112, 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.