Research Article
Effects of Pyriproxyfen on Life Table Indices of Plutella xylostella in Multigenerations
Table 3
The effects of pyriproxyfen on the developmental period of 3rd instar larvae of P. xylostella in two subsequent generations.
| Treatments | Developmental time (mean SE) (day) | | | df | Control | LC10 | LC25 |
| Egg | 2.18 ± 0.03 | 3.31 ± 0.04 | 3.54 ± 0.05 | 313.34 | <0.0001 | 2, 281 | Larva 1 | 2.98 ± 0.05 | 2.84 ± 0.14 | 2.48. ± 0.14 | 7.01 | 0.0012 | 2, 151 | Larva 2 | 1.61 ± 0.08 | 2.18 ± 0.19 | 2.00 ± 0.20 | 3.83 | 0.0244 | 2, 122 | Larva 3 | 1.25 ± 0.07 | 1.88 ± 0.24 | 1.85 ± 0.25 | 6.03 | 0.0032 | 2, 114 | Larva 4 | 1.51 ± 0.06 | 3.25 ± 0.20 | 2.25 ± 0.37 | 37.65 | <0.0001 | 2, 101 | All larvae | 7.44 ± 0.23 | 9.88 ± 0.28 | 8.31 ± 0.53 | 22.29 | <0.0001 | 2, 99 | Prepupa | 0.40 ± 0.06 | 0.26 ± 0.08 | 0.25 ± 0.11 | 1.04 | 0.3559 | 2, 99 | Pupa | 3.70 ± 0.10 | 4.42 ± 0.17 | 4.46 ± 0.40 | 6.69 | 0.0019 |
2, 94 | Pre adult stages | 13.61 ± 0.19 | 18.11 ± 0.42 | 16.60 ± 0.77 | 52.37 | <0.0001 | 2, 94 | Total life span (male) | 30.78 ± 1.26 | 31.78 ± 1.09 | 23.71 ± 1.92 | 4.94 | 0.0114 | 2, 48 | Total life span (female) | 31.30 ± 1.18 | 32.90 ± 2.15 | 27.44 ± 2.23 | 1.72 | 0.1910 | 2, 48 |
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indicates that means marked with the same letters within a row are not significantly different (Tukey’s test; P < 0.05).
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