| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Meio Ambiente. |
|
Data corrente: |
03/08/2017 |
|
Data da última atualização: |
23/10/2017 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
CLEMENTE, Z.; CASTRO, V. L. S. S. de; FRANQUI, L.; SILVA, C. A.; MARTINEZ, D. S. T. |
|
Afiliação: |
ZAIRA CLEMENTE, CNPEM; VERA LUCIA SCHERHOLZ S DE CASTRO, CNPMA; LIDIANE FRANQUI, CNPEM; CRISTIANE A SILVA, CNPEM; DIEGO STEFANI TEODORO MARTINEZ, CNPEM. |
|
Título: |
Nanotoxicity of graphene oxide: assessing the influence of oxidation debris in the presence of humic acid. |
|
Ano de publicação: |
2017 |
|
Fonte/Imprenta: |
Environmental Pollution, v. 225, p. 118-128, 2017. |
|
DOI: |
http://dx.doi.org/10.1016/j.envpol.2017.03.033 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract: This study sought to evaluate the toxicological effects of graphene oxide (GO) through tests with Danio rerio (zebrafish) embryos, considering the influence of the base washing treatment and the interaction with natural organic matter (i.e., humic acid, HA). A commercial sample of GO was refluxed with NaOH to remove oxidation debris (OD) byproducts, which resulted in a base washed GO sample (bw-GO). This process decreased the total oxygenated groups in bw-GO and its stability in water compared to GO. When tested in the presence of HA, both GO and bw-GO stabilities were enhanced in water. Although the embryo exposure showed no acute toxicity or malformation, the larvae exposed to GO showed a reduction in their overall length and acetylcholinesterase activity. In the presence of HA, GO also inhibited acid phosphatase activity. Our findings indicate a mitigation of material toxicity after OD removal. The difference in the biological effects may be related to the materials? bioavailability and biophysicochemical interactions. This study reports for the first time the critical influence of OD on the GO material biological reactivity and HA interaction, providing new data for nanomaterial environmental risk assessment and sustainable nanotechnology. |
|
Palavras-Chave: |
Biomarker; Nanoecotoxicology; Zebrafish. |
|
Thesagro: |
Composto químico; Matéria orgânica; Peixe de água doce; Toxidez. |
|
Thesaurus Nal: |
embryotoxicity; nanotechnology. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02151naa a2200289 a 4500
001 2073578
005 2017-10-23
008 2017 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.envpol.2017.03.033$2DOI
100 1 $aCLEMENTE, Z.
245 $aNanotoxicity of graphene oxide$bassessing the influence of oxidation debris in the presence of humic acid.$h[electronic resource]
260 $c2017
520 $aAbstract: This study sought to evaluate the toxicological effects of graphene oxide (GO) through tests with Danio rerio (zebrafish) embryos, considering the influence of the base washing treatment and the interaction with natural organic matter (i.e., humic acid, HA). A commercial sample of GO was refluxed with NaOH to remove oxidation debris (OD) byproducts, which resulted in a base washed GO sample (bw-GO). This process decreased the total oxygenated groups in bw-GO and its stability in water compared to GO. When tested in the presence of HA, both GO and bw-GO stabilities were enhanced in water. Although the embryo exposure showed no acute toxicity or malformation, the larvae exposed to GO showed a reduction in their overall length and acetylcholinesterase activity. In the presence of HA, GO also inhibited acid phosphatase activity. Our findings indicate a mitigation of material toxicity after OD removal. The difference in the biological effects may be related to the materials? bioavailability and biophysicochemical interactions. This study reports for the first time the critical influence of OD on the GO material biological reactivity and HA interaction, providing new data for nanomaterial environmental risk assessment and sustainable nanotechnology.
650 $aembryotoxicity
650 $ananotechnology
650 $aComposto químico
650 $aMatéria orgânica
650 $aPeixe de água doce
650 $aToxidez
653 $aBiomarker
653 $aNanoecotoxicology
653 $aZebrafish
700 1 $aCASTRO, V. L. S. S. de
700 1 $aFRANQUI, L.
700 1 $aSILVA, C. A.
700 1 $aMARTINEZ, D. S. T.
773 $tEnvironmental Pollution$gv. 225, p. 118-128, 2017.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio Ambiente (CNPMA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Algodão. |
|
Data corrente: |
14/01/2020 |
|
Data da última atualização: |
20/01/2020 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
SILVA, C. S. B. D.; PRICE, B. E.; SOOHOO-HUI, A.; WALTON, V. M. |
|
Afiliação: |
CHERRE SADE BEZERRA DA SILVA, CNPA; Briana E. Price, Department of Horticulture, Oregon State University; Alexander Soohoo-Hui, Department of Horticulture, Oregon State University; Vaughn M. Walton, Department of Horticulture, Oregon State University. |
|
Título: |
Factors affecting the biology of Pachycrepoideus vindemmiae (Hymenoptera: Pteromalidae), a parasitoid of spotted-wing drosophila (Drosophila suzukii). |
|
Ano de publicação: |
2019 |
|
Fonte/Imprenta: |
Plos One, v. 14, n. 7, e0218301, July 2019. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Pachycrepoideus vindemmiae is a wasp that parasitizes and host-feeds on pupae of the invasive spotted-wing drosophila (SWD, Drosophila suzukii). Few studies have addressed interactions between these two species and little is known about the potential of this parasitoid as a biocontrol agent of SWD and the different variables that may affect it. Here, we investigated the impact of extrinsic and intrinsic factors on life-history traits of P. vindemmiae. Both constant (entire adulthood) and limited (30 minutes) supplies of water + honey, honey, or host increased parasitoid survival compared to controls (water or fasting). Water + honey caused the highest parasitoid survivals (35?60 days), independent of supply period, sex, and host availability. Females were intrinsically more resistant to water- and honey-deprivation than males, and host-feeding elevated such resistance even higher. Constant honey supply (either with or without water) supported the highest host-killing capacities (= capacity to kill hosts) (ca. 600 SWD pupae/wasp). However, in young females (4?9 days old), the impact of honey availability (with or without water) was insignificant while water deprivation (either with or without honey) caused the highest host-killing potential. This indicates that although sugar becomes a critical nutritional resource as females age, young females depend more on water than sugar to reproduce. Neither water nor honey affected the sex ratio of young females, but when we considered the entire adulthood, the availability of honey caused the lowest proportion of females (0.50), independent of water availability. Neither water nor honey affected parasitoid emergence rate (0.97), independent of female age. Based on survival and host-killing capacity, we conclude that P. vindemmiae has a tremendous biocontrol potential against SWD. Both limited and constant supply of water, sugar, and host increase parasitoid survival, while constant supply of water and/or honey enhance its host-killing potential and decrease sex ratio depending on maternal age. MenosPachycrepoideus vindemmiae is a wasp that parasitizes and host-feeds on pupae of the invasive spotted-wing drosophila (SWD, Drosophila suzukii). Few studies have addressed interactions between these two species and little is known about the potential of this parasitoid as a biocontrol agent of SWD and the different variables that may affect it. Here, we investigated the impact of extrinsic and intrinsic factors on life-history traits of P. vindemmiae. Both constant (entire adulthood) and limited (30 minutes) supplies of water + honey, honey, or host increased parasitoid survival compared to controls (water or fasting). Water + honey caused the highest parasitoid survivals (35?60 days), independent of supply period, sex, and host availability. Females were intrinsically more resistant to water- and honey-deprivation than males, and host-feeding elevated such resistance even higher. Constant honey supply (either with or without water) supported the highest host-killing capacities (= capacity to kill hosts) (ca. 600 SWD pupae/wasp). However, in young females (4?9 days old), the impact of honey availability (with or without water) was insignificant while water deprivation (either with or without honey) caused the highest host-killing potential. This indicates that although sugar becomes a critical nutritional resource as females age, young females depend more on water than sugar to reproduce. Neither water nor honey affected the sex ratio of young females, but when we considered... Mostrar Tudo |
|
Thesaurus NAL: |
Drosophila; Pachycrepoideus vindemmiae; Parasitoids; Water. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/208775/1/Factors-affecting-the-biology-of-Pachyc.pdf
|
|
Marc: |
LEADER 02724naa a2200205 a 4500
001 2118757
005 2020-01-20
008 2019 bl uuuu u00u1 u #d
100 1 $aSILVA, C. S. B. D.
245 $aFactors affecting the biology of Pachycrepoideus vindemmiae (Hymenoptera$bPteromalidae), a parasitoid of spotted-wing drosophila (Drosophila suzukii).$h[electronic resource]
260 $c2019
520 $aPachycrepoideus vindemmiae is a wasp that parasitizes and host-feeds on pupae of the invasive spotted-wing drosophila (SWD, Drosophila suzukii). Few studies have addressed interactions between these two species and little is known about the potential of this parasitoid as a biocontrol agent of SWD and the different variables that may affect it. Here, we investigated the impact of extrinsic and intrinsic factors on life-history traits of P. vindemmiae. Both constant (entire adulthood) and limited (30 minutes) supplies of water + honey, honey, or host increased parasitoid survival compared to controls (water or fasting). Water + honey caused the highest parasitoid survivals (35?60 days), independent of supply period, sex, and host availability. Females were intrinsically more resistant to water- and honey-deprivation than males, and host-feeding elevated such resistance even higher. Constant honey supply (either with or without water) supported the highest host-killing capacities (= capacity to kill hosts) (ca. 600 SWD pupae/wasp). However, in young females (4?9 days old), the impact of honey availability (with or without water) was insignificant while water deprivation (either with or without honey) caused the highest host-killing potential. This indicates that although sugar becomes a critical nutritional resource as females age, young females depend more on water than sugar to reproduce. Neither water nor honey affected the sex ratio of young females, but when we considered the entire adulthood, the availability of honey caused the lowest proportion of females (0.50), independent of water availability. Neither water nor honey affected parasitoid emergence rate (0.97), independent of female age. Based on survival and host-killing capacity, we conclude that P. vindemmiae has a tremendous biocontrol potential against SWD. Both limited and constant supply of water, sugar, and host increase parasitoid survival, while constant supply of water and/or honey enhance its host-killing potential and decrease sex ratio depending on maternal age.
650 $aDrosophila
650 $aPachycrepoideus vindemmiae
650 $aParasitoids
650 $aWater
700 1 $aPRICE, B. E.
700 1 $aSOOHOO-HUI, A.
700 1 $aWALTON, V. M.
773 $tPlos One$gv. 14, n. 7, e0218301, July 2019.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Algodão (CNPA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
