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Lethal and sublethal effects of methoxyfenozide on the development, survival and reproduction of the fall armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae)

(2011) NEOTROPICAL ENTOMOLOGY. 40(1). p.129-137
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Abstract
The lethal and sublethal effects of the ecdysone agonist methoxyfenozide on the fall armyworm, Spodoptera frugiperda (J. E. Smith), were investigated by feeding a methoxyfenozide-treated diet to fifth instars until pupation in doses corresponding to the LC(10) and LC(25) for the compound. Larval mortality reached 8% and 26% in the low and high concentration groups, respectively, on the seventh day of the experiment. A progressive larval mortality of 12% for the LC(10) and 60% for the LC(25) was observed before pupation. Treated larvae exhibited lower pupal weights, higher pupal mortality, presence of deformed pupae, and more deformed adults than untreated larvae. The incorporation of methoxyfenozide into the diet had a significant effect on the timing of larval development. The development period for males and females was about seven days longer than the controls for both concentrations tested. In contrast, the compound affected neither pupae nor adult longevity. Finally, S. frugiperda adults that resulted from fifth instars treated with methoxyfenozide were not affected in their mean cumulative number of eggs laid per female (fecundity), nor percentages of eggs hatched (fertility), or the sex ratio. Our results suggest that the combination of lethal and sublethal effects of methoxyfenozide may have important implications for the population dynamics of the fall armyworm.
Keywords
insect growth regulator, Ecdysone agonist, reproductive parameter, ECDYSTEROID AGONIST RH-2485, BIORATIONAL INSECTICIDES, LITTORALIS LEPIDOPTERA, TEBUFENOZIDE RH-5992, ECDYSONE AGONISTS, CORN-BORER, SPINOSAD, PHARMACOKINETICS, TOXICITY, ICHNEUMONIDAE

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Chicago
Zarate, N, O Díaz, AM Martínez, JI Figueroa, MI Schneider, Guy Smagghe, E Viñuela, F Budia, and S Pineda. 2011. “Lethal and Sublethal Effects of Methoxyfenozide on the Development, Survival and Reproduction of the Fall Armyworm, Spodoptera Frugiperda (J. E. Smith) (Lepidoptera: Noctuidae).” Neotropical Entomology 40 (1): 129–137.
APA
Zarate, N., Díaz, O., Martínez, A., Figueroa, J., Schneider, M., Smagghe, G., Viñuela, E., et al. (2011). Lethal and sublethal effects of methoxyfenozide on the development, survival and reproduction of the fall armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae). NEOTROPICAL ENTOMOLOGY, 40(1), 129–137.
Vancouver
1.
Zarate N, Díaz O, Martínez A, Figueroa J, Schneider M, Smagghe G, et al. Lethal and sublethal effects of methoxyfenozide on the development, survival and reproduction of the fall armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae). NEOTROPICAL ENTOMOLOGY. 2011;40(1):129–37.
MLA
Zarate, N, O Díaz, AM Martínez, et al. “Lethal and Sublethal Effects of Methoxyfenozide on the Development, Survival and Reproduction of the Fall Armyworm, Spodoptera Frugiperda (J. E. Smith) (Lepidoptera: Noctuidae).” NEOTROPICAL ENTOMOLOGY 40.1 (2011): 129–137. Print.
@article{1901344,
  abstract     = {The lethal and sublethal effects of the ecdysone agonist methoxyfenozide on the fall armyworm, Spodoptera frugiperda (J. E. Smith), were investigated by feeding a methoxyfenozide-treated diet to fifth instars until pupation in doses corresponding to the LC(10) and LC(25) for the compound. Larval mortality reached 8\% and 26\% in the low and high concentration groups, respectively, on the seventh day of the experiment. A progressive larval mortality of 12\% for the LC(10) and 60\% for the LC(25) was observed before pupation. Treated larvae exhibited lower pupal weights, higher pupal mortality, presence of deformed pupae, and more deformed adults than untreated larvae. The incorporation of methoxyfenozide into the diet had a significant effect on the timing of larval development. The development period for males and females was about seven days longer than the controls for both concentrations tested. In contrast, the compound affected neither pupae nor adult longevity. Finally, S. frugiperda adults that resulted from fifth instars treated with methoxyfenozide were not affected in their mean cumulative number of eggs laid per female (fecundity), nor percentages of eggs hatched (fertility), or the sex ratio. Our results suggest that the combination of lethal and sublethal effects of methoxyfenozide may have important implications for the population dynamics of the fall armyworm.},
  author       = {Zarate, N and D{\'i}az, O and Mart{\'i}nez, AM and Figueroa, JI and Schneider, MI and Smagghe, Guy and Vi{\~n}uela, E and Budia, F and Pineda, S},
  issn         = {1519-566X},
  journal      = {NEOTROPICAL ENTOMOLOGY},
  language     = {eng},
  number       = {1},
  pages        = {129--137},
  title        = {Lethal and sublethal effects of methoxyfenozide on the development, survival and reproduction of the fall armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae)},
  url          = {http://dx.doi.org/10.1590/S1519-566X2011000100020},
  volume       = {40},
  year         = {2011},
}

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