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| 4. |  | SANTANA, C. M. M. de; OLIVEIRA, M. E. A.; MOURA, A. F.; REIS, M. M. dos; NASCIMENTO, M. do P. S. C. B. Quebra de impermeabilidade de sementes de Piptadenia moniliformis Nenth. (Angico-de-bezerro), Samanea saman (Jacq.) Merr. (Bordao-de-velho) e Caesalpinia ferrea Mart. ex tul., (Pau-ferro). In: PLANTAS DO NORDESTE WORKSHOP GERAL, 1., 1996, Recife. Anais... Kew: Royal Botanic Gardens, 1999. p. 118.| Biblioteca(s): Embrapa Meio-Norte. |
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| 5. | | NASCIMENTO, M. do P. S. C. B. do; NASCIMENTO, H. T. S. do; OLIVEIRA, M. E. A.; CARVALHO, J. H. de; ALCOFORADO FILHO, F. G.; SANTANA, C. M. M. de. Levantamento preliminar, identificacao botanica e valor nutritivo de plantas forrageiras nativas da Bacia do Parnaiba. In: PLANTAS DO NORDESTE WORKSHOP GERAL, 1., 1996, Recife. Anais... Kew: Royal Botanic Gardens, 1999. p. 22-32.| Biblioteca(s): Embrapa Meio-Norte. |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
04/05/2016 |
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Data da última atualização: |
23/03/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
BUCH, A. C.; NIEMEYER, J. C.; CORREIA, M. E. F.; SILVA FILHO, E. V. |
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Afiliação: |
ANDRESSA CRISTHY BUCH, UFF; JÚLIA CARINA NIEMEYER, UFSC; MARIA ELIZABETH FERNANDES CORREIA, CNPAB; EMMANOEL VIEIRA SILVA FILHO, UFF. |
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Título: |
Ecotoxicity of mercury to Folsomia candida and Proisotoma minuta (Collembola: isotomidae) in tropical soil: baseline for ecological risk assessment |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Ecotoxicology and Environment Safety, v. 127, p. 22-29, 2016 |
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ISSN: |
0147-6513 |
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DOI: |
10.1016/j.ecoenv.2016.01.009 |
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Idioma: |
Português |
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Conteúdo: |
Mercury (Hg) is a highly toxic nonessential trace metal. Despite its natural occurrence in the Earth's Crust, its concentrations have been steadily increasing in the environment due to anthropogenic sources. Recent studies have showed great concern about soil fauna, once the potential adverse effects of mercury concentrations in the environment of these invertebrates are still poorly understood, especially when linked to forest soils and tropical biota. Different collembolan species can show distinct toxicity effects to the contaminants, impairing its developing lifelong and affecting its diversity and abundance in the environment. Laboratory studies were performed to evaluate the ecotoxicity of Hg(II) to collembolan species collected in Brazil, Proisotoma minuta (autochthonous) and Folsomia candida (allochthonous), as a tool to predict effects in ecological risk assessment of tropical regions. Behavioral, acute and chronic tests were carried under temperatures of 20 °C and 24 °C using two test soils, natural and artificial, spiked with increasing mercury concentrations. F. candida was more sensitive to mercury contamination than P. minuta, presenting the most restrictive values of EC50 and LC50. Reproduction was a considerably more sensitive endpoint than avoidance and mortality. The 28-day lower EC50 values were found in chronic tests for F. candida in natural soil to 24 °C (3.32 mg Hg kg?1), while for P. minuta was in tropical artificial soil to 20 °C (4.43 mg Hg kg?1). There were similarity for each collembolan species to respond at the Hg(II) effects when exposed at 20 °C and 24 °C. F. candida can be suitable as a bioindicator species to mercury ecotoxicity tests in tropical forest soils. MenosMercury (Hg) is a highly toxic nonessential trace metal. Despite its natural occurrence in the Earth's Crust, its concentrations have been steadily increasing in the environment due to anthropogenic sources. Recent studies have showed great concern about soil fauna, once the potential adverse effects of mercury concentrations in the environment of these invertebrates are still poorly understood, especially when linked to forest soils and tropical biota. Different collembolan species can show distinct toxicity effects to the contaminants, impairing its developing lifelong and affecting its diversity and abundance in the environment. Laboratory studies were performed to evaluate the ecotoxicity of Hg(II) to collembolan species collected in Brazil, Proisotoma minuta (autochthonous) and Folsomia candida (allochthonous), as a tool to predict effects in ecological risk assessment of tropical regions. Behavioral, acute and chronic tests were carried under temperatures of 20 °C and 24 °C using two test soils, natural and artificial, spiked with increasing mercury concentrations. F. candida was more sensitive to mercury contamination than P. minuta, presenting the most restrictive values of EC50 and LC50. Reproduction was a considerably more sensitive endpoint than avoidance and mortality. The 28-day lower EC50 values were found in chronic tests for F. candida in natural soil to 24 °C (3.32 mg Hg kg?1), while for P. minuta was in tropical artificial soil to 20 °C (4.43 mg Hg kg?1). T... Mostrar Tudo |
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Palavras-Chave: |
Autochthonous species; Ecotoxicological tests; Invertebrates soil fauna; Springtail; Trace metal. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/142782/1/Ecotoxicityofmercuryto-Folsomiacandida.pdf
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Marc: |
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022 $a0147-6513
024 7 $a10.1016/j.ecoenv.2016.01.009$2DOI
100 1 $aBUCH, A. C.
245 $aEcotoxicity of mercury to Folsomia candida and Proisotoma minuta (Collembola$bisotomidae) in tropical soil: baseline for ecological risk assessment
260 $c2016
520 $aMercury (Hg) is a highly toxic nonessential trace metal. Despite its natural occurrence in the Earth's Crust, its concentrations have been steadily increasing in the environment due to anthropogenic sources. Recent studies have showed great concern about soil fauna, once the potential adverse effects of mercury concentrations in the environment of these invertebrates are still poorly understood, especially when linked to forest soils and tropical biota. Different collembolan species can show distinct toxicity effects to the contaminants, impairing its developing lifelong and affecting its diversity and abundance in the environment. Laboratory studies were performed to evaluate the ecotoxicity of Hg(II) to collembolan species collected in Brazil, Proisotoma minuta (autochthonous) and Folsomia candida (allochthonous), as a tool to predict effects in ecological risk assessment of tropical regions. Behavioral, acute and chronic tests were carried under temperatures of 20 °C and 24 °C using two test soils, natural and artificial, spiked with increasing mercury concentrations. F. candida was more sensitive to mercury contamination than P. minuta, presenting the most restrictive values of EC50 and LC50. Reproduction was a considerably more sensitive endpoint than avoidance and mortality. The 28-day lower EC50 values were found in chronic tests for F. candida in natural soil to 24 °C (3.32 mg Hg kg?1), while for P. minuta was in tropical artificial soil to 20 °C (4.43 mg Hg kg?1). There were similarity for each collembolan species to respond at the Hg(II) effects when exposed at 20 °C and 24 °C. F. candida can be suitable as a bioindicator species to mercury ecotoxicity tests in tropical forest soils.
653 $aAutochthonous species
653 $aEcotoxicological tests
653 $aInvertebrates soil fauna
653 $aSpringtail
653 $aTrace metal
700 1 $aNIEMEYER, J. C.
700 1 $aCORREIA, M. E. F.
700 1 $aSILVA FILHO, E. V.
773 $tEcotoxicology and Environment Safety$gv. 127, p. 22-29, 2016
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Embrapa Agrobiologia (CNPAB) |
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