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Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
Data corrente: |
10/12/2014 |
Data da última atualização: |
10/12/2014 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
CASTRO, M. P.; MORAES, F. R. de; FUJIMOTO, R. Y.; CRUZ, C. da; BELO, M. A. de A.; MORAES, J. R. E. de. |
Afiliação: |
RODRIGO YUDI FUJIMOTO, CPATC. |
Título: |
Acute Toxicity by Water Containing Hexavalent or Trivalent Chromium in Native Brazilian Fish, Piaractus mesopotamicus: Anatomopathological Alterations and Mortality. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Bulletin of Environmental Contamination and Toxicology, California, v. 92, p. 213-219, 2014. |
DOI: |
10.1007/s00128-013-1174-5 |
Idioma: |
Inglês |
Conteúdo: |
This study evaluated the toxicity of hexavalent and trivalent compounds of chromium to the pacu, Piaractus mesopotamicus, in acute exposures of 96 h through mortality and histopathological responses. Hexavalent otassium dichromate was more toxic than trivalent compounds of chromium chloride, chromium oxide and chromium carbochelate. Sufficient mortalities occurred only with potassium dichromate to yield an LC50 value at 124.2 mg L-1. Hexavalent chromium caused reversible and irreversible lesions, which may affect organ functionality. Histopathological evaluation showed that trivalent chromium caused lesions of lower severity. Pacu subjected to different concentrations of chromium carbochelate showed no histopathological changes in the kidneys, liver, skin and gills, being similar to those of the control fish. Among the three sources of Cr3?, only chromium chloride at 200 mg L-1 resulted in mortality, which reached 100 % within the first 18 h. These findings confirm that trivalent chromium, when administered within recommended levels, may be used safely in aquaculture. |
Thesaurus NAL: |
chromium; histopathology; Piaractus mesopotamicus; toxicity. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/113507/1/art-10.1007-s00128-013-1174-5-buletim-contamination.pdf
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Marc: |
LEADER 01919naa a2200241 a 4500 001 2002178 005 2014-12-10 008 2014 bl uuuu u00u1 u #d 024 7 $a10.1007/s00128-013-1174-5$2DOI 100 1 $aCASTRO, M. P. 245 $aAcute Toxicity by Water Containing Hexavalent or Trivalent Chromium in Native Brazilian Fish, Piaractus mesopotamicus$bAnatomopathological Alterations and Mortality.$h[electronic resource] 260 $c2014 520 $aThis study evaluated the toxicity of hexavalent and trivalent compounds of chromium to the pacu, Piaractus mesopotamicus, in acute exposures of 96 h through mortality and histopathological responses. Hexavalent otassium dichromate was more toxic than trivalent compounds of chromium chloride, chromium oxide and chromium carbochelate. Sufficient mortalities occurred only with potassium dichromate to yield an LC50 value at 124.2 mg L-1. Hexavalent chromium caused reversible and irreversible lesions, which may affect organ functionality. Histopathological evaluation showed that trivalent chromium caused lesions of lower severity. Pacu subjected to different concentrations of chromium carbochelate showed no histopathological changes in the kidneys, liver, skin and gills, being similar to those of the control fish. Among the three sources of Cr3?, only chromium chloride at 200 mg L-1 resulted in mortality, which reached 100 % within the first 18 h. These findings confirm that trivalent chromium, when administered within recommended levels, may be used safely in aquaculture. 650 $achromium 650 $ahistopathology 650 $aPiaractus mesopotamicus 650 $atoxicity 700 1 $aMORAES, F. R. de 700 1 $aFUJIMOTO, R. Y. 700 1 $aCRUZ, C. da 700 1 $aBELO, M. A. de A. 700 1 $aMORAES, J. R. E. de 773 $tBulletin of Environmental Contamination and Toxicology, California$gv. 92, p. 213-219, 2014.
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