Lethal and sublethal effects of cypermethrin and methoxyfenozide on the larvae ofRachiplusia nu(Guenee) (Lepidoptera: Noctuidae)

Autor:	Federico Rimoldi, Alicia Estela Ronco, Marilina Noelia Fogel, Marcela Inés Schneider
Rok vydání:	2012
Předmět:	Larva biology business.industry fungi Pest control biology.organism_classification Cypermethrin Lepidoptera genitalia Toxicology chemistry.chemical_compound Rachiplusia nu chemistry Instar Noctuidae Animal Science and Zoology PEST analysis business Developmental Biology
Zdroj:	Invertebrate Reproduction & Development. 56:200-208
ISSN:	2157-0272 0792-4259
DOI:	10.1080/07924259.2011.591177
Popis:	Rachiplusia nu is a defoliator lepidopteran species considered a potential pest in soybean and other crops. Cypermethrin is the main insecticide used in Argentina. Worldwide trends in pest control promote the use of insecticides with high specificity like methoxyfenozide; however, their usage in South America is still incipient. The effectiveness of cypermethrin and methoxyfenozide was studied on fifth larval instar of R. nu under chronic exposure in laboratory conditions. Four dilutions (between 10% and 80%) of the maximum field recommended concentration for each insecticide were assessed. Methoxyfenozide caused 100% larval mortality in all tested concentrations, while at tested cypermethrin concentrations, larval mortalities were between 75% and 98%. Cypermethrin treatments showed higher mean survival time values than methoxyfenozide. Both insecticides inhibited larval growth according to weight loss assessment. Cypermethrin also inhibited diet consumption during the first 24-h exposure.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1b2b70eec19da65b7a48d6dc1bc1cec2 https://doi.org/10.1080/07924259.2011.591177 Zobrazit plný text záznamu