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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
18/04/1991 |
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Data da última atualização: |
13/03/2017 |
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Autoria: |
MORAES, G. J. de; ALENCAR, J. A. de; WENZEL NETO, F.; MERGULHAO, S. M. R. |
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Afiliação: |
GILBERTO JOSE de MORAES, CNPMA; CPATSA; CPATSA; CPATSA. |
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Título: |
Explorations for natural enemies of the cassava green mite in Brazil. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
In: SYMPOSIUM INTERNATIONAL SOCIETY FOR TROPICAL ROOT CROPS, 8., 1988, Bangkok. Proceedings. Bangkok: International Society for Tropical Root Crops, [1990?]. p.351-353 |
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Idioma: |
Inglês |
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Conteúdo: |
The cassava green mite (Mononychellus tanajoa (Bondar)) is today one of the most important pests of cassava in Africa. Explorations for efficient natural enemies of that pest were initiated in Brazil in the beginning of 1988 through an agreement between Africa-wide Biological Control Programm/International Institute of Tropical Agriculture and the Empresa Brasileira de Pesquisa Agropecuaria (EMBRAPA). The work consists basically of two major components. The first refers to the identification of areas with consistently low infestations of the mite and determination of the natural enemies associated with it. The second refers to field estimations of the efficiency of the natural enemies found. Until now, the most widespread enemies detected were the predaceous Amblyseius idaeus (Denmark and Muma) and Amblyseius limonicus Garman and McGregor s.l., the former in drier and the latter in more humid places. |
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Palavras-Chave: |
Amblyseius limonicus; Natural enemy. |
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Thesagro: |
Mononychellus Tanajoa. |
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Thesaurus Nal: |
Acari; Amblyseius idaeus; biological control; Brazil; Manihot. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/157544/1/1990SP009-Moraes-Explorations-601.PDF
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Marc: |
LEADER 01729nam a2200241 a 4500
001 1009956
005 2017-03-13
008 1990 bl uuuu u00u1 u #d
100 1 $aMORAES, G. J. de
245 $aExplorations for natural enemies of the cassava green mite in Brazil.$h[electronic resource]
260 $aIn: SYMPOSIUM INTERNATIONAL SOCIETY FOR TROPICAL ROOT CROPS, 8., 1988, Bangkok. Proceedings. Bangkok: International Society for Tropical Root Crops, [1990?]. p.351-353$c1990
520 $aThe cassava green mite (Mononychellus tanajoa (Bondar)) is today one of the most important pests of cassava in Africa. Explorations for efficient natural enemies of that pest were initiated in Brazil in the beginning of 1988 through an agreement between Africa-wide Biological Control Programm/International Institute of Tropical Agriculture and the Empresa Brasileira de Pesquisa Agropecuaria (EMBRAPA). The work consists basically of two major components. The first refers to the identification of areas with consistently low infestations of the mite and determination of the natural enemies associated with it. The second refers to field estimations of the efficiency of the natural enemies found. Until now, the most widespread enemies detected were the predaceous Amblyseius idaeus (Denmark and Muma) and Amblyseius limonicus Garman and McGregor s.l., the former in drier and the latter in more humid places.
650 $aAcari
650 $aAmblyseius idaeus
650 $abiological control
650 $aBrazil
650 $aManihot
650 $aMononychellus Tanajoa
653 $aAmblyseius limonicus
653 $aNatural enemy
700 1 $aALENCAR, J. A. de
700 1 $aWENZEL NETO, F.
700 1 $aMERGULHAO, S. M. R.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
22/01/2020 |
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Data da última atualização: |
05/03/2024 |
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Tipo da produção científica: |
Nota Técnica/Nota Científica |
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Autoria: |
ASSALIN, M. R.; SANTOS, L. D. L. dos; SOUZA, D. R. C. de; ROSA, M. A.; DUARTE, R. C. R. M.; CASTANHA, R. F.; DONAIRE, P. P. R.; DURAN, N. |
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Afiliação: |
MARCIA REGINA ASSALIN, CNPMA; LUCAS D. L. DOS DANTOS, CNPMA; DEBORA RENATA CASSOLI DE S DUTRA, CNPMA; MARIA APARECIDA ROSA, CNPMA; RAFAELA C. R. M. DUARTE, CNPMA; RODRIGO FERNANDES CASTANHA, CNPMA; PATRICIA PULCINI ROSVALD DONAIRE, UNIVERSIDAD FEDERAL DO ABC/SP; NELSON DURA´N, UNICAMP/SP. |
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Título: |
Nanoformulation as a tool for improvement of thiamethoxam encapsulation and evaluation of ecotoxicological impacts. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Energy, Ecology and Environment, v. 4, n. 6. p. 310-317, 2019. |
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DOI: |
https://doi.org/10.1007/s40974-019-00138-1 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Huanglonbing, or citrus greening, is the most serious disease of citrus which cause large economic losses. One of the strategies to avoid the spread of the disease is the control of Diaphorina citri psyllid, its insect vector, by the application of insecticides. Development of nanoinsecticides, which are less harmful to the environment and more efficient (in terms of cost and performance) than the existing formulations, is a current challenge. In this work, nanocarriers composed of chitosan–tripolyphosphate (by ionic gelification approach) and poly-ε-caprolactone (PCL)–chitosan (by double-emulsion–solvent evaporation method) for thiametoxam insecticide were developed and characterized. Toxicological assessments using Raphidocelis subcapta, Artemia salina and Caernohabditis elegans were performed comparing PCL–chitosan nanoparticle and PCL–chitosan loaded thiamethoxam in comparison to commercial pesticide. The nanoparticles obtained from optimized conditions resulted in positive charged nanoparticles, with medium dispersity. The double-emulsion method resulted in smaller nanoparticles (313.5 ± 7 nm) and increased encapsulation efficiency (36.6 ± 0.2%) in comparison to chitosan–tripolyphosphate nanoparticles. The lower encapsulation efficiency was observed in chitosan–tripolyphosphate, impairing agricultural applications. The EC50 values (mg L⁻¹) of Raphidocelis subcapitata and C. elegans obtained for poly-ε-caprolactone with thiamethoxam were 56.15 (18.91–131.21) and 66.07 (1.20–274.14), respectively, and poly-ε-caprolactone without thiamethoxam 94.26 (22.42–166.10) and 214.63 (139.08–494.3), respectively. No toxicity was found in Artemia salina. Our results indicate that nanoparticles (with and without thiamethoxam) were more toxic to soil organisms (C. elegan) than commercial formulations. MenosAbstract: Huanglonbing, or citrus greening, is the most serious disease of citrus which cause large economic losses. One of the strategies to avoid the spread of the disease is the control of Diaphorina citri psyllid, its insect vector, by the application of insecticides. Development of nanoinsecticides, which are less harmful to the environment and more efficient (in terms of cost and performance) than the existing formulations, is a current challenge. In this work, nanocarriers composed of chitosan–tripolyphosphate (by ionic gelification approach) and poly-ε-caprolactone (PCL)–chitosan (by double-emulsion–solvent evaporation method) for thiametoxam insecticide were developed and characterized. Toxicological assessments using Raphidocelis subcapta, Artemia salina and Caernohabditis elegans were performed comparing PCL–chitosan nanoparticle and PCL–chitosan loaded thiamethoxam in comparison to commercial pesticide. The nanoparticles obtained from optimized conditions resulted in positive charged nanoparticles, with medium dispersity. The double-emulsion method resulted in smaller nanoparticles (313.5 ± 7 nm) and increased encapsulation efficiency (36.6 ± 0.2%) in comparison to chitosan–tripolyphosphate nanoparticles. The lower encapsulation efficiency was observed in chitosan–tripolyphosphate, impairing agricultural applications. The EC50 values (mg L⁻¹) of Raphidocelis subcapitata and C. elegans obtained for poly-ε-caprolactone with thiamethoxam were 56.15 (18.91–131.21) an... Mostrar Tudo |
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Palavras-Chave: |
Caernohabditis elegans; Ecotoxicity; Pesticide; Polymeric nanoparticles. |
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Thesagro: |
Greening; Impacto Ambiental; Inseticida. |
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Thesaurus NAL: |
Ecotoxicology; Encapsulation; Environmental impact; Insecticides; thiamethoxam. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02952naa a2200361 a 4500
001 2119220
005 2024-03-05
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s40974-019-00138-1$2DOI
100 1 $aASSALIN, M. R.
245 $aNanoformulation as a tool for improvement of thiamethoxam encapsulation and evaluation of ecotoxicological impacts.$h[electronic resource]
260 $c2019
520 $aAbstract: Huanglonbing, or citrus greening, is the most serious disease of citrus which cause large economic losses. One of the strategies to avoid the spread of the disease is the control of Diaphorina citri psyllid, its insect vector, by the application of insecticides. Development of nanoinsecticides, which are less harmful to the environment and more efficient (in terms of cost and performance) than the existing formulations, is a current challenge. In this work, nanocarriers composed of chitosan–tripolyphosphate (by ionic gelification approach) and poly-ε-caprolactone (PCL)–chitosan (by double-emulsion–solvent evaporation method) for thiametoxam insecticide were developed and characterized. Toxicological assessments using Raphidocelis subcapta, Artemia salina and Caernohabditis elegans were performed comparing PCL–chitosan nanoparticle and PCL–chitosan loaded thiamethoxam in comparison to commercial pesticide. The nanoparticles obtained from optimized conditions resulted in positive charged nanoparticles, with medium dispersity. The double-emulsion method resulted in smaller nanoparticles (313.5 ± 7 nm) and increased encapsulation efficiency (36.6 ± 0.2%) in comparison to chitosan–tripolyphosphate nanoparticles. The lower encapsulation efficiency was observed in chitosan–tripolyphosphate, impairing agricultural applications. The EC50 values (mg L⁻¹) of Raphidocelis subcapitata and C. elegans obtained for poly-ε-caprolactone with thiamethoxam were 56.15 (18.91–131.21) and 66.07 (1.20–274.14), respectively, and poly-ε-caprolactone without thiamethoxam 94.26 (22.42–166.10) and 214.63 (139.08–494.3), respectively. No toxicity was found in Artemia salina. Our results indicate that nanoparticles (with and without thiamethoxam) were more toxic to soil organisms (C. elegan) than commercial formulations.
650 $aEcotoxicology
650 $aEncapsulation
650 $aEnvironmental impact
650 $aInsecticides
650 $athiamethoxam
650 $aGreening
650 $aImpacto Ambiental
650 $aInseticida
653 $aCaernohabditis elegans
653 $aEcotoxicity
653 $aPesticide
653 $aPolymeric nanoparticles
700 1 $aSANTOS, L. D. L. dos
700 1 $aSOUZA, D. R. C. de
700 1 $aROSA, M. A.
700 1 $aDUARTE, R. C. R. M.
700 1 $aCASTANHA, R. F.
700 1 $aDONAIRE, P. P. R.
700 1 $aDURAN, N.
773 $tEnergy, Ecology and Environment$gv. 4, n. 6. p. 310-317, 2019.
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