1998
DOI: 10.1590/s0100-736x1998000200002
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Valores de DL50 em peixes e no rato tratados com pó de raízes de Derris spp e suas implicações ecotoxicológicas

Abstract: Os "timbós verdadeiros" (plantas do gênero Derris), originários da Amazônia Brasileira, tem demonstrado importância crescente por produzirem uma classe de compostos flavonoídicos relacionados à rotenona, que possuem atividade tóxica para peixes e mamíferos. Neste estudo foi determinado a dose letal 50% (DL50) do extrato alcoólico do pó de Derris spp para três espécies de peixes filogeneticamente diferentes e um mamífero roedor (rato). As DL50 de 2,6 microgramas/ml para Collosoma macropomum (tambaqui), 4,8 micr… Show more

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Cited by 10 publications
(12 citation statements)
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References 8 publications
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“…The tested product Arrast ® is formulated with an extract of the plant Deguelia utilis (Leguminosae: Papilionoideae) containing rotenone. Rotenone is reported to cause inhibition of the mitochondrial respiratory chain, reducing oxygen consumption (MASCARO et al, 1998) and the production of ATP (adenosine triphosphate, C 10 H 16 N 5 O 13 P 3 ), which is necessary for the metabolism and development of insects. It was observed that different concentrations of Rotenat ® , formulated Table 3 -Placement of organic supplies sprayed on the egg parasitoid Telenomus podisi into IOBC survival side-effect classes.…”
Section: Sprayed Pupae -----1 Day After Adult Emergence -----------5 mentioning
confidence: 99%
“…The tested product Arrast ® is formulated with an extract of the plant Deguelia utilis (Leguminosae: Papilionoideae) containing rotenone. Rotenone is reported to cause inhibition of the mitochondrial respiratory chain, reducing oxygen consumption (MASCARO et al, 1998) and the production of ATP (adenosine triphosphate, C 10 H 16 N 5 O 13 P 3 ), which is necessary for the metabolism and development of insects. It was observed that different concentrations of Rotenat ® , formulated Table 3 -Placement of organic supplies sprayed on the egg parasitoid Telenomus podisi into IOBC survival side-effect classes.…”
Section: Sprayed Pupae -----1 Day After Adult Emergence -----------5 mentioning
confidence: 99%
“…O ganho de peso menor, durante o período das águas, de aproximadamente 10 kg dos animais tratados com rotenona em relação aos controles e tratados com fipronil, nas três avaliações testadas, apesar da baixa toxicidade dessa molécula para mamíferos (MASCARO et al, 1998), indica um possível efeito negativo do extrato da planta Lonchocarpus nicou. No pastejo contínuo, o grupo tratado estrategicamente contra endo e ecto parasitos (C 4 ) ganhou significativamente mais peso (23 kg) que o grupo controle (C 1 ), mas, no pastejo rotacionado, o grupo (R 3 ) tratado estrategicamente contra endoparasitos não teve ganho de peso superior ao grupo controle (R 1 ), devido ao efeito negativo do tratamento acaricida com o extrato de Lonchocarpus nicou no período chuvoso (Tabela 3).…”
Section: Ensaio a Campo -Parasitismo E Ganho De Pesounclassified
“…It is the most studied among the isoflavonoids and the most powerful of them, killing animals primarily by inhibiting the mitochondrial respiratory chain, and fishes show to be highly susceptible (Mascaro et al, 1998). According to Corrêa (2006), the roots of this plant, when crushed and stirred in water produce a milky juice with a very strong and peculiar smell, and, under the action of this juice, even very dilute, fishes lose their balance, emerge stunned to the surface, and, thus, they are easily caught.…”
Section: Major Chemical Classes Of Timbó Species With Bioinsecticide mentioning
confidence: 99%
“…The genus Derris (Fabaceae) is found in the literature as a reference of ichthyotoxic plant with action over mosquitoes, and this fact is due to the presence of flavonoid and rotenoid compounds, mainly rotenone and degueline, present in the root (Lima, 1987;Mascaro et al, 1998). This genus is often found out in the Amazon region and it has FIGURE 1.…”
Section: Major Chemical Classes Of Timbó Species With Bioinsecticide mentioning
confidence: 99%
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