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Long-term effects of methoxyfenozide on the adult reproductive processes and longevity of Spodoptera exigua (Lepidoptera: Noctuidae)

(2011) JOURNAL OF ECONOMIC ENTOMOLOGY. 104(4). p.1229-1235
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Abstract
The long-term effects of methoxyfenozide on the longevity and reproductive processes of beet armyworm, Spodoptera exigua (Hubner) (Lepidoptera: Noctuidae), adults were assessed after exposure by ingestion. Methoxyfenozide significantly reduced adult male longevity compared with females by 1.1 and 1.5 d at 75 and 150 mg (AI)/liter, respectively. Fecundity decreased by > 60% with both concentrations at 72 and 96 h after treatment, but at 48 h, no significant effect was observed. The carbohydrate, protein, and lipid content in the eggs were determined as representatives of the biochemical effects of methoxyfenozide associated with the disruption of reproductive processes. The content of carbohydrates in the eggs laid 48 h at treatment was similar to that of controls, but it increased by approximate to 1.5 and 2-fold in eggs laid after 72 and 96 h, respectively, compared with controls (15 mu g per egg). Protein content was reduced approximate to 2.5 and approximate to 3-fold for each treatment concentration, respectively, compared with the controls (25 and 23 mu g per egg for 75 and 150 mg [AI]/liter, respectively) in eggs collected 72 and 96 h after treatment. Lipid content significantly decreased by approximate to 1.6-fold in both treatment concentrations in eggs collected at 48 and 96 h after treatment compared with the controls (24 and 21 mu g per egg for 48 and 96, respectively), but it was similar to controls (approximate to 19 mu g per egg) at 72 h (approximate to 15 mu g per egg) for both concentrations. The biochemical effects of methoxyfenozide on S. exigua egg formation detected in this work are consistent with the reduction in fertility observed, as reported previously.
Keywords
PHARMACOKINETICS, TOXICITY, TORTRICIDAE, Spodoptera exigua, methoxyfenozide, carbohydrates, proteins, lipids, ECDYSTEROID AGONISTS TEBUFENOZIDE, CODLING MOTH LEPIDOPTERA, INSECT GROWTH-REGULATOR, ECDYSONE AGONIST, LITTORALIS LEPIDOPTERA, OVARIAN DEVELOPMENT, TENEBRIO-MOLITOR

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Chicago
Luna, Juan-Carlos, Virginia-Angélica Robinson, Ana-Mabel Martínez, Marcela-Inés Schneider, José-Isaac Figueroa, Guy Smagghe, Elisa Viñuela, Flor Budia, and Samuel Pineda. 2011. “Long-term Effects of Methoxyfenozide on the Adult Reproductive Processes and Longevity of Spodoptera Exigua (Lepidoptera: Noctuidae).” Journal of Economic Entomology 104 (4): 1229–1235.
APA
Luna, J.-C., Robinson, V.-A., Martínez, A.-M., Schneider, M.-I., Figueroa, J.-I., Smagghe, G., Viñuela, E., et al. (2011). Long-term effects of methoxyfenozide on the adult reproductive processes and longevity of Spodoptera exigua (Lepidoptera: Noctuidae). JOURNAL OF ECONOMIC ENTOMOLOGY, 104(4), 1229–1235.
Vancouver
1.
Luna J-C, Robinson V-A, Martínez A-M, Schneider M-I, Figueroa J-I, Smagghe G, et al. Long-term effects of methoxyfenozide on the adult reproductive processes and longevity of Spodoptera exigua (Lepidoptera: Noctuidae). JOURNAL OF ECONOMIC ENTOMOLOGY. 2011;104(4):1229–35.
MLA
Luna, Juan-Carlos, Virginia-Angélica Robinson, Ana-Mabel Martínez, et al. “Long-term Effects of Methoxyfenozide on the Adult Reproductive Processes and Longevity of Spodoptera Exigua (Lepidoptera: Noctuidae).” JOURNAL OF ECONOMIC ENTOMOLOGY 104.4 (2011): 1229–1235. Print.
@article{1901260,
  abstract     = {The long-term effects of methoxyfenozide on the longevity and reproductive processes of beet armyworm, Spodoptera exigua (Hubner) (Lepidoptera: Noctuidae), adults were assessed after exposure by ingestion. Methoxyfenozide significantly reduced adult male longevity compared with females by 1.1 and 1.5 d at 75 and 150 mg (AI)/liter, respectively. Fecundity decreased by {\textrangle} 60\% with both concentrations at 72 and 96 h after treatment, but at 48 h, no significant effect was observed. The carbohydrate, protein, and lipid content in the eggs were determined as representatives of the biochemical effects of methoxyfenozide associated with the disruption of reproductive processes. The content of carbohydrates in the eggs laid 48 h at treatment was similar to that of controls, but it increased by approximate to 1.5 and 2-fold in eggs laid after 72 and 96 h, respectively, compared with controls (15 mu g per egg). Protein content was reduced approximate to 2.5 and approximate to 3-fold for each treatment concentration, respectively, compared with the controls (25 and 23 mu g per egg for 75 and 150 mg [AI]/liter, respectively) in eggs collected 72 and 96 h after treatment. Lipid content significantly decreased by approximate to 1.6-fold in both treatment concentrations in eggs collected at 48 and 96 h after treatment compared with the controls (24 and 21 mu g per egg for 48 and 96, respectively), but it was similar to controls (approximate to 19 mu g per egg) at 72 h (approximate to 15 mu g per egg) for both concentrations. The biochemical effects of methoxyfenozide on S. exigua egg formation detected in this work are consistent with the reduction in fertility observed, as reported previously.},
  author       = {Luna, Juan-Carlos and Robinson, Virginia-Ang{\'e}lica and Mart{\'i}nez, Ana-Mabel and Schneider, Marcela-In{\'e}s and Figueroa, Jos{\'e}-Isaac and Smagghe, Guy and Vi{\~n}uela, Elisa and Budia, Flor and Pineda, Samuel},
  issn         = {0022-0493},
  journal      = {JOURNAL OF ECONOMIC ENTOMOLOGY},
  language     = {eng},
  number       = {4},
  pages        = {1229--1235},
  title        = {Long-term effects of methoxyfenozide on the adult reproductive processes and longevity of Spodoptera exigua (Lepidoptera: Noctuidae)},
  url          = {http://dx.doi.org/10.1603/EC10450},
  volume       = {104},
  year         = {2011},
}

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