02384naa a2200313 a 450000100080000000500110000800800410001902400380006010000190009824502080011726000090032552013260033465000170166065000180167765000160169565000140171165000140172565000130173965000260175265000130177865300210179165300250181270000170183770000130185470000200186770000180188770000190190577301460192418610142018-06-04       2010    bl uuuu     u00u1 u    #d7 a10.1080/03601234.2010.4934932DOI1 aTAVARES, W. S.  aSelective effects of natural and synthetic insecticides on mortality of Spodoptera frugiperda (LepidopterabNoctuidae) and its predator Eriopis connexa (Coleoptera: Coccinellidae).h[electronic resource]  c2010  aSpodoptera frugiperda Smith (Lepidoptera: Noctuidae) is a serious pest of corn in several American countries. It is mainly controlled with synthetic insecticides. The objectives of this study were to evaluate the effects of the natural products, neem oil and pyroligneous extract, and the synthetic insecticide, lufenuron, at 2.50mL water (0.25 %) on the mortality of 2-, 4- and 6-day-old caterpillars of S. frugiperda, and their selectivities against fourth instar larvae of Eriopis connnexa Germar (Coleoptera: Coccinellidae). Four- and 6-day-old S. frugiperda caterpillars showed higher mortality after exposure to neem oil (83.33 ± 0.83 and 89.58 ± 0.90 %, respectively) and lufenuron (95.83 ± 0.96 and 85.41 ± 0.83 %), compared to pyroligneous extract (68.75 ± 0.69 and 31.25 ± 0.31 %). The deleterious effect of pyroligneous extract was higher in 2- (83.33 ± 0.83 % mortality) and 4-day-old (68.75 ± 0.69 %) S. frugiperda caterpillars than in 6-day-old caterpillars (31.25 ± 0.31 %). Larval mortality of the predator E. connexa was lower with neem oil and pyroligneous extract (25.00 ± 0.33 %) than with lufenuron (91.66 ± 1.22 %). Neem oil is thus recommended for control of S. frugiperda because of its high toxicity, combined with its relatively low toxicity to larvae of the natural enemy E. connexa.  aazadirachtin  aCoccinellidae  aLepidoptera  alufenuron  amortality  aneem oil  aSpodoptera Frugiperda  aZea Mays  aEriopis connnexa  aPyroligneous extract1 aCOSTA, M. A.1 aCRUZ, I.1 aSILVEIRA, R. D.1 aSERRAO. J. E.1 aZANUNCIO, J. C  tJournal of Environmental Science and Health. Part B. Pesticides, Food Contaminants and Agricultural, New Yorkgv. 45, n. 6, p. 557-561, 2010.