| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Agrobiologia. |
|
Data corrente: |
27/06/1995 |
|
Data da última atualização: |
27/06/1995 |
|
Autoria: |
SHEN, S. C.; WANG, S. P.; YU, G. Q.; ZHU, J. B. |
|
Título: |
Expression of the nodulation and nitrogen fixation genes in Rhizobium meliloti during development. |
|
Ano de publicação: |
1989 |
|
Fonte/Imprenta: |
Genome, v.31, p.354-360, 1989. |
|
Idioma: |
Português |
|
Palavras-Chave: |
RIZOBIO. |
|
Thesagro: |
Genética; Rhizobium Meliloti. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 00499naa a2200181 a 4500
001 1614402
005 1995-06-27
008 1989 bl --- 0-- u #d
100 1 $aSHEN, S. C.
245 $aExpression of the nodulation and nitrogen fixation genes in Rhizobium meliloti during development.
260 $c1989
650 $aGenética
650 $aRhizobium Meliloti
653 $aRIZOBIO
700 1 $aWANG, S. P.
700 1 $aYU, G. Q.
700 1 $aZHU, J. B.
773 $tGenome$gv.31, p.354-360, 1989.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agrobiologia (CNPAB) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Cerrados. |
|
Data corrente: |
24/05/2019 |
|
Data da última atualização: |
24/05/2019 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
OLIVEIRA FILHO, E. C. de; LOPES, R. M.; PAUMGARTTEN, F. J. R. |
|
Afiliação: |
EDUARDO CYRINO DE OLIVEIRA FILHO, CPAC; RENATO MATOS LOPES, FIOCRUZ; FRANCISCO JOSE ROMA PAUMGARTTEN, FIOCRUZ. |
|
Título: |
Comparative study on the susceptibility of freshwater species to copper-based pesticides. |
|
Ano de publicação: |
2004 |
|
Fonte/Imprenta: |
Chemosphere, v. 56, n. 4, p. 369-374, July 2004 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract Copper compounds have been intentionally introduced into water bodies as aquatic plant herbicides, algicides and molluscicides. Copper-based fertilizers and fungicides have been widely used in agriculture as well. Despite the fact that copper is an essential element for all biota, elevated concentrations of this metal have been shown to affect a variety of aquatic organisms. Nonetheless, comparative studies on the susceptibility of different freshwater species to copper compounds have seldom been performed. This study was conducted to compare toxicity of copper-based pesticides (copper oxychloride, cuprous oxide and copper sulfate) to different freshwater target (Raphidocelis subcapitata, a planktonic alga and Biomphalaria glabrata, a snail) and non-target (Daphnia similis, a planktonic crustacean and Danio rerio, a fish) organisms. Test water parameters were as follows: pH=7.4 ± 0.1; hardness 44 ± 1 mg/l as CaCO3; DO 8?9 mg/l at the beginning and >4 mg/l at the end; temperature, fish and snails 25 ± 1 °C, Daphnia 20 ± 2 °C, algae 24 ± 1 °C. D. similis (immobilization), 48-h EC50s (95% CLs) ranging from 0.013 (0.011?0.016) to 0.043 (0.033?0.057) mg Cu/l, and R. subcapitata (growth inhibition), 96-h IC50s from 0.071 (0.045?0.099) to 0.137 (0.090?0.174) mg Cu/l, were the most susceptible species. B. glabrata (lethality), 48-h LC50s from 0.179 (0.102?0.270) to 0.854 (0.553?1.457) mg Cu/l, and D. rerio (lethality), 48-h LC50s 0.063 (0.045?0.089), 0.192 (0.133?0.272) and 0.714 (0.494?1.016) mg Cu/l, were less susceptible than Daphnia to copper-based pesticides. Findings from the present study therefore suggest that increased levels of copper in water bodies is likely to adversely affect a variety of aquatic species. MenosAbstract Copper compounds have been intentionally introduced into water bodies as aquatic plant herbicides, algicides and molluscicides. Copper-based fertilizers and fungicides have been widely used in agriculture as well. Despite the fact that copper is an essential element for all biota, elevated concentrations of this metal have been shown to affect a variety of aquatic organisms. Nonetheless, comparative studies on the susceptibility of different freshwater species to copper compounds have seldom been performed. This study was conducted to compare toxicity of copper-based pesticides (copper oxychloride, cuprous oxide and copper sulfate) to different freshwater target (Raphidocelis subcapitata, a planktonic alga and Biomphalaria glabrata, a snail) and non-target (Daphnia similis, a planktonic crustacean and Danio rerio, a fish) organisms. Test water parameters were as follows: pH=7.4 ± 0.1; hardness 44 ± 1 mg/l as CaCO3; DO 8?9 mg/l at the beginning and >4 mg/l at the end; temperature, fish and snails 25 ± 1 °C, Daphnia 20 ± 2 °C, algae 24 ± 1 °C. D. similis (immobilization), 48-h EC50s (95% CLs) ranging from 0.013 (0.011?0.016) to 0.043 (0.033?0.057) mg Cu/l, and R. subcapitata (growth inhibition), 96-h IC50s from 0.071 (0.045?0.099) to 0.137 (0.090?0.174) mg Cu/l, were the most susceptible species. B. glabrata (lethality), 48-h LC50s from 0.179 (0.102?0.270) to 0.854 (0.553?1.457) mg Cu/l, and D. rerio (lethality), 48-h LC50s 0.063 (0.045?0.089), 0.192 (0.133?0.272) and... Mostrar Tudo |
|
Palavras-Chave: |
Toxicidade. |
|
Thesagro: |
Alga; Cobre; Ecologia Aquatica; Fungicida; Herbicida; Poluição da Água. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/197726/1/1-s2.0-S0045653504002942-main.pdf
|
|
Marc: |
LEADER 02412naa a2200229 a 4500
001 2109297
005 2019-05-24
008 2004 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA FILHO, E. C. de
245 $aComparative study on the susceptibility of freshwater species to copper-based pesticides.$h[electronic resource]
260 $c2004
520 $aAbstract Copper compounds have been intentionally introduced into water bodies as aquatic plant herbicides, algicides and molluscicides. Copper-based fertilizers and fungicides have been widely used in agriculture as well. Despite the fact that copper is an essential element for all biota, elevated concentrations of this metal have been shown to affect a variety of aquatic organisms. Nonetheless, comparative studies on the susceptibility of different freshwater species to copper compounds have seldom been performed. This study was conducted to compare toxicity of copper-based pesticides (copper oxychloride, cuprous oxide and copper sulfate) to different freshwater target (Raphidocelis subcapitata, a planktonic alga and Biomphalaria glabrata, a snail) and non-target (Daphnia similis, a planktonic crustacean and Danio rerio, a fish) organisms. Test water parameters were as follows: pH=7.4 ± 0.1; hardness 44 ± 1 mg/l as CaCO3; DO 8?9 mg/l at the beginning and >4 mg/l at the end; temperature, fish and snails 25 ± 1 °C, Daphnia 20 ± 2 °C, algae 24 ± 1 °C. D. similis (immobilization), 48-h EC50s (95% CLs) ranging from 0.013 (0.011?0.016) to 0.043 (0.033?0.057) mg Cu/l, and R. subcapitata (growth inhibition), 96-h IC50s from 0.071 (0.045?0.099) to 0.137 (0.090?0.174) mg Cu/l, were the most susceptible species. B. glabrata (lethality), 48-h LC50s from 0.179 (0.102?0.270) to 0.854 (0.553?1.457) mg Cu/l, and D. rerio (lethality), 48-h LC50s 0.063 (0.045?0.089), 0.192 (0.133?0.272) and 0.714 (0.494?1.016) mg Cu/l, were less susceptible than Daphnia to copper-based pesticides. Findings from the present study therefore suggest that increased levels of copper in water bodies is likely to adversely affect a variety of aquatic species.
650 $aAlga
650 $aCobre
650 $aEcologia Aquatica
650 $aFungicida
650 $aHerbicida
650 $aPoluição da Água
653 $aToxicidade
700 1 $aLOPES, R. M.
700 1 $aPAUMGARTTEN, F. J. R.
773 $tChemosphere$gv. 56, n. 4, p. 369-374, July 2004
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Cerrados (CPAC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
