Table 3.
Effect of sublethal concentrations of fenoxycarb on pre-oviposition, oviposition, post-oviposition periods and adult longevity of P. xylostella in parents and offspring
Generations | Stages | Mean ± SE (day)a |
F | P | dft,e | ||
---|---|---|---|---|---|---|---|
Control | LC10 | LC25 | |||||
Parent | APOPb | 2.13 ± 0.66 b | 7.53 ± 1.80 a | 8.33 ± 2.14 a | 5.40 | 0.0082 | 2, 42 |
Oviposition | 11.26 ± 0.95 a | 7.46 ± 1.04 b | 3.26 ± 1.13 c | 14.63 | <0.0001 | 2, 42 | |
Post-Oviposition | 0.86 ± 0.30 a | 1.46 ± 0.40 a | 0.80 ± 0.38 a | 1.01 | 0.3719 | 2, 42 | |
Male longevity | 20.07 ± 1.98 a | 18.27 ± 1.79 a | 17.00 ± 2.13 a | 0.61 | 0.5477 | 2, 42 | |
Female longevity | 14.26 ± 1.16 a | 16.46 ± 1.39 a | 12.40 ± 2.22 a | 1.51 | 0.2326 | 2, 42 | |
Offspring | APOPb | 4.13 ± 0.78 a | 2.70 ± 0.46 a | 2.75 ± 1.61 a | 3.06 | 0.0534 | 2, 67 |
TPOPc | 13.17 ± 0.26 b | 16.79 ± 0.32 a | 17.31 ± 1.06 a | 27.37 | <0.0001 | 2, 67 | |
Oviposition | 10.65 ± 0.89 a | 10.37 ± 1.35 a | 9.43 ± 0.93 a | 0.27 | 0.7608 | 2, 67 | |
Post-oviposition | 2.06 ± 0.57 a | 1.29 ± 0.43 a | 1.25 ± 0.44 a | 1.02 | 0.3675 | 2, 67 | |
Male longevity | 16.60 ± 1.27 a | 14.65 ± 1.32 ab | 11.76 ± 1.33 b | 4.34 | 0.0168 | 2, 70 | |
Female longevity | 16.62 ± 1.20 a | 14.33 ± 1.52 ab | 11.17 ± 1.50 b | 3.48 | 0.0366 | 2, 67 |
aMeans followed by the same letters within a row are not significantly different (Tukey's test; P < 0.05).
bAdult pre-oviposition period, time between adult emergence and first oviposition.
cTotal pre-oviposition period, time from birth to first reproduction in female.