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	Provedor de dados Anais da SEB (2) Autor Humeres,Eduardo (2) Da Cruz,Ivana B. M. (1) Da Cruz,Ivana B.M. (1) Oliveira,Alice K. (1) Oliveira,Alice K. de (1) Palavra-chave Insecta (2) Insecticide (2) Toxicity (2) Fruit-fly (1) South American fruit fly (1) Tipo do documento Info:eu-repo/semantics/article (2) Ano 1999 (1) 1997 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Toxicity of fenthion to Anastrepha fraterculus (Wied.) (Diptera:Tephritidae): dose response analysis Anais da SEB Da Cruz,Ivana B. M.; Humeres,Eduardo; Oliveira,Alice K.. Three toxicological bioassays were performed in two F1 south Brazilian field populations of Anastrepha fraterculus (Wied.). Lethal doses of fenthion (50% and 90%) were estimated in two bioassays, with oral administration, and with residual contact bioassay. Results of topical bioassays using fenthion diluted in alcohol, acetone or water were inconsistent. Samples treated with acetone or alcohol diluents presented high mortality (>10%), while the samples treated with water diluent showed a non linear response between dose and mortality. The residual contact bioassay was significatively more toxic when compared to a feeding bioassay, occurring equal slopes in males and females in the populations analysed. Additional test showed that insects did not... Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; South American fruit fly; Insecticide; Toxicity. Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591997000300009 Age and time exposure-related toxicity of fenthion to male and female Anastrepha fraterculus (Wied.) (Diptera: Tephritidae) Anais da SEB Humeres,Eduardo; Da Cruz,Ivana B.M.; Oliveira,Alice K. de. Effect of age, sex and time exposure of Anastrepha fraterculus (Wied.) to toxicity of fenthion was evaluated. The age of the flies was important to the appearance of the first intoxication symptoms; males and females of reproductive ages (30 and 60 days-old, respectively) were less susceptible to insecticide than flies in the remainder ages (four and 120 days-old). The effect of body weight on insect intoxication was not detected. LT 50 biossay with fenthion (varying from 3-7 minutes) showed a lower susceptibility of males than females at all ages. Adults of both sexes and 30 days-old submitted to continuous and discontinuous exposure to fenthion did not show toxic cumulative effect of the insecticide. The statistical analysis suggests a possible general... Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Fruit-fly; Insecticide; Toxicity. Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591999000200011 Registros recuperados: 2 Primeira ... 1 ... Última

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