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| 1. |  | MESSIAS, M.; SOUZA, K. M. de O. L. de; SOARES, L. H. de B.; FERREIRA, E. P. de B.; REIS, V. M.; ZILLI, J. E. Desenvolvimento de inoculante líquido contendo Rhizobium tropici e bactérias promotoras de crescimento para a cultura do feijoeiro comum In: SEMANA CIENTÍFICA JOHANNA DÖBEREINER, 22., 2022, Seropédica. Bicentenário da Independência: 200 anos de ciência, tecnologia e inovação no Brasil: caderno de resumos... Seropédica: Embrapa Agrobiologia, 2022.| Biblioteca(s): Embrapa Agrobiologia. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
25/05/2009 |
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Data da última atualização: |
24/02/2010 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
OLIVEIRA-FILHO, E. C.; GRISOLIA, C. K.; PAUMGARTTEN, F. J. R. |
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Afiliação: |
Eduardo Cyrino Oliveira-Filho, CPAC; Cesar Koppe Grisolia, UnB; Francisco José Roma Paumgartten, Fiocruz. |
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Título: |
Effects of endosulfan and ethanol on the reproduction of the snail Biomphalaria tenagophila: a multigeneration study. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Chemosphere, v. 75, p. 398-404, 2009. |
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Idioma: |
Inglês |
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Conteúdo: |
Endosulfan (END) is an insecticide used in agriculture and as a wood preservative. Since END is practically insoluble in water, ethanol (ETOH) is often employed as a carrier solvent to spike in the test medium in aquatic toxicity assays. In this study were investigated the effects of END and ETOH on the reproduction of the freshwater snail Biomphalaria tenagophila exposed over three successive generations. END (0, 0.001, 0.01, 0.1 mg l -1) was dissolved in the medium water using ETOH (up to 19.8 mg L -1) as carrier solvent. ETOH (19.8, 198, 1980 mg L -1) alone was tested as well. Adult snails (Fo-generation) were exposed to END and ETOH for 8 weeks. The F1-generation continued to be exposed from embryo to reproductive maturity, while their descendants (F2) were exposed until day 10 after spawning. Effects on the fecundity (8-week production of eggs and egg-masses) of mature Fo and F1 snails were evaluated. Developmental toxicity was investigated in F1, and F2 embryos. END at the highest level tested (0.1 mg L -1) inhibited egg production by Fo and F1 snails. ETOH at levels >=198 mg L -1 also reduced fecundity of Fo and F1, an effect that was apparently aggravated by exposure over successive generations. END 0.1 mh L 1- increased mortality and malformations and decreased hatching among F1 embryos. ETOH drastically reduced the proportion of hatchings among F2 embryos. The study-derived NOECs (no-observed-effect-concentrations) for END was 0.01 mg L -1 (reduction in fecundity), and for ETOH were 19.8 mh L -1 for reduction in fecundity and <19.8 mg L -1 for developmental toxicity (hatching retardation). MenosEndosulfan (END) is an insecticide used in agriculture and as a wood preservative. Since END is practically insoluble in water, ethanol (ETOH) is often employed as a carrier solvent to spike in the test medium in aquatic toxicity assays. In this study were investigated the effects of END and ETOH on the reproduction of the freshwater snail Biomphalaria tenagophila exposed over three successive generations. END (0, 0.001, 0.01, 0.1 mg l -1) was dissolved in the medium water using ETOH (up to 19.8 mg L -1) as carrier solvent. ETOH (19.8, 198, 1980 mg L -1) alone was tested as well. Adult snails (Fo-generation) were exposed to END and ETOH for 8 weeks. The F1-generation continued to be exposed from embryo to reproductive maturity, while their descendants (F2) were exposed until day 10 after spawning. Effects on the fecundity (8-week production of eggs and egg-masses) of mature Fo and F1 snails were evaluated. Developmental toxicity was investigated in F1, and F2 embryos. END at the highest level tested (0.1 mg L -1) inhibited egg production by Fo and F1 snails. ETOH at levels >=198 mg L -1 also reduced fecundity of Fo and F1, an effect that was apparently aggravated by exposure over successive generations. END 0.1 mh L 1- increased mortality and malformations and decreased hatching among F1 embryos. ETOH drastically reduced the proportion of hatchings among F2 embryos. The study-derived NOECs (no-observed-effect-concentrations) for END was 0.01 mg L -1 (reduction in fecundity),... Mostrar Tudo |
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Palavras-Chave: |
Ecotoxicologia. |
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Thesagro: |
Inseticida. |
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Categoria do assunto: |
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Marc: |
LEADER 02144naa a2200169 a 4500
001 1558319
005 2010-02-24
008 2009 bl --- 0-- u #d
100 1 $aOLIVEIRA-FILHO, E. C.
245 $aEffects of endosulfan and ethanol on the reproduction of the snail Biomphalaria tenagophila$ba multigeneration study.
260 $c2009
520 $aEndosulfan (END) is an insecticide used in agriculture and as a wood preservative. Since END is practically insoluble in water, ethanol (ETOH) is often employed as a carrier solvent to spike in the test medium in aquatic toxicity assays. In this study were investigated the effects of END and ETOH on the reproduction of the freshwater snail Biomphalaria tenagophila exposed over three successive generations. END (0, 0.001, 0.01, 0.1 mg l -1) was dissolved in the medium water using ETOH (up to 19.8 mg L -1) as carrier solvent. ETOH (19.8, 198, 1980 mg L -1) alone was tested as well. Adult snails (Fo-generation) were exposed to END and ETOH for 8 weeks. The F1-generation continued to be exposed from embryo to reproductive maturity, while their descendants (F2) were exposed until day 10 after spawning. Effects on the fecundity (8-week production of eggs and egg-masses) of mature Fo and F1 snails were evaluated. Developmental toxicity was investigated in F1, and F2 embryos. END at the highest level tested (0.1 mg L -1) inhibited egg production by Fo and F1 snails. ETOH at levels >=198 mg L -1 also reduced fecundity of Fo and F1, an effect that was apparently aggravated by exposure over successive generations. END 0.1 mh L 1- increased mortality and malformations and decreased hatching among F1 embryos. ETOH drastically reduced the proportion of hatchings among F2 embryos. The study-derived NOECs (no-observed-effect-concentrations) for END was 0.01 mg L -1 (reduction in fecundity), and for ETOH were 19.8 mh L -1 for reduction in fecundity and <19.8 mg L -1 for developmental toxicity (hatching retardation).
650 $aInseticida
653 $aEcotoxicologia
700 1 $aGRISOLIA, C. K.
700 1 $aPAUMGARTTEN, F. J. R.
773 $tChemosphere$gv. 75, p. 398-404, 2009.
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