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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)
Zarate, N; Díaz, O; Martínez, AM; Figueroa, JI; Schneider, MI; Smagghe, G; Viñuela, E; Budia, F; Pineda, S.
Afiliação
  • Zarate, N; Univ Michoacana de San Nicolás de Hidalgo. Instituto de Investigaciones Agropecuarias y Forestales. Tarímbaro. MX
  • Díaz, O; Univ Autónoma de San Luis Potosí. Facultad de Agronomía. San Luis Potosí. MX
  • Martínez, AM; Univ Michoacana de San Nicolás de Hidalgo. Instituto de Investigaciones Agropecuarias y Forestales. Tarímbaro. MX
  • Figueroa, JI; Univ Michoacana de San Nicolás de Hidalgo. Instituto de Investigaciones Agropecuarias y Forestales. Tarímbaro. MX
  • Schneider, MI; Centro de Estudios Parasitológicos y de Vectores. Buenos Aires. AR
  • Smagghe, G; Ghent Univ. Faculty of Bioscience Engineering. Lab of Agrozoology. Ghent. BE
  • Viñuela, E; Escuela Técnica Superior de Ingenieros Agrónomos. Madrid. ES
  • Budia, F; Escuela Técnica Superior de Ingenieros Agrónomos. Madrid. ES
  • Pineda, S; Univ Michoacana de San Nicolás de Hidalgo. Instituto de Investigaciones Agropecuarias y Forestales. Tarímbaro. MX
Neotrop. entomol ; 40(1): 129-137, Jan.-Feb. 2011. tab
Article em En | LILACS | ID: lil-578846
Biblioteca responsável: BR1.1
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 LC10 and LC25 for the compound. Larval mortality reached 8 percent and 26 percent in the low and high concentration groups, respectively, on the seventh day of the experiment. A progressive larval mortality of 12 percent for the LC10 and 60 percent for the LC25 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.
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Texto completo: 1 Índice: LILACS Assunto principal: Spodoptera / Hidrazinas / Hormônios Juvenis Limite: Animals Idioma: En Revista: Neotrop. entomol Assunto da revista: BIOLOGIA / ZOOLOGIA Ano de publicação: 2011 Tipo de documento: Article / Project document

Texto completo: 1 Índice: LILACS Assunto principal: Spodoptera / Hidrazinas / Hormônios Juvenis Limite: Animals Idioma: En Revista: Neotrop. entomol Assunto da revista: BIOLOGIA / ZOOLOGIA Ano de publicação: 2011 Tipo de documento: Article / Project document