Toxicidade aguda e efeitos histopatológicos do herbicida diquat na brânquia e no fígado da tilápia nilótica (Oreochromis niloticus)
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4025/actascibiolsci.v30i1.1462 http://hdl.handle.net/11449/1244 |
Resumo: | The lethal concentration of 50% (LC (I) and the histopathologic effects of diquat herbicide on Nile tilapia (Oreochromis niloticus) fish were evaluated in three experiments. The fishes were exposed to concentrations of 0, 25, 30, 35, 40, 45, 50, 55 and 60 rug diquat L-1, and gill and liver histology were evaluated in the surviving fishes. The estimated LC (I) (50-96h) of diquat was 37.28 mg L-1, with lower limits of 33.12 mg L-1 and upper limits of 41.44 mg L-1. In the treatment with 30, 35 and 40 mg L-1, signs of apical fusion of the secondary lamellae were observed; with 45 and 50 mg L-1, congestion of the primary lamellae was observed; in the treatment with 55 mg L-1, congestion of blood vessels on secondary lamellae took place. The livers of fishes in treatments with 0, 25, 30 and 35 mg L-1showed cordonal organization of hepatocytes. In the treatments with 40 and 45 mg L-1, hypertrophy of hepatocytes took place; with 50 and 55 mg L-1, cell fusion and the presence of vacuoles inside hepatocytes were observed. Diquat presented low risk of toxicity for nile tilapia, as the more severe histopathologic alterations occurred only in higher concentrations. |
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Toxicidade aguda e efeitos histopatológicos do herbicida diquat na brânquia e no fígado da tilápia nilótica (Oreochromis niloticus)Acute toxicity and histopathologic effects of diquat herbicide on the gill and liver of Nile tilapia (Oreochromis niloticus).The lethal concentration of 50% (LC (I) and the histopathologic effects of diquat herbicide on Nile tilapia (Oreochromis niloticus) fish were evaluated in three experiments. The fishes were exposed to concentrations of 0, 25, 30, 35, 40, 45, 50, 55 and 60 rug diquat L-1, and gill and liver histology were evaluated in the surviving fishes. The estimated LC (I) (50-96h) of diquat was 37.28 mg L-1, with lower limits of 33.12 mg L-1 and upper limits of 41.44 mg L-1. In the treatment with 30, 35 and 40 mg L-1, signs of apical fusion of the secondary lamellae were observed; with 45 and 50 mg L-1, congestion of the primary lamellae was observed; in the treatment with 55 mg L-1, congestion of blood vessels on secondary lamellae took place. The livers of fishes in treatments with 0, 25, 30 and 35 mg L-1showed cordonal organization of hepatocytes. In the treatments with 40 and 45 mg L-1, hypertrophy of hepatocytes took place; with 50 and 55 mg L-1, cell fusion and the presence of vacuoles inside hepatocytes were observed. Diquat presented low risk of toxicity for nile tilapia, as the more severe histopathologic alterations occurred only in higher concentrations.Nucleo de Estudos e Pesquisas Ambientais em Matologia, Departamento de Biologia Aplicada a Agropecuaria, Universidade Estadual Paulista, Via de Acesso Paulo Donato Castelanni, s/n, 14884-900, Jaboticabal, São PauloNucleo de Estudos e Pesquisas Ambientais em Matologia, Departamento de Biologia Aplicada a Agropecuaria, Universidade Estadual Paulista, Via de Acesso Paulo Donato Castelanni, s/n, 14884-900, Jaboticabal, São PauloUniversidade Estadual Paulista (Unesp)Peixoto Henares, Matheus Nicolinoda Cruz, ClaudineiGomes, Gabriela RoncadaPitelli, Robinson AntonioFernandes Machado, Marcia Rita2014-05-20T13:13:28Z2014-05-20T13:13:28Z2008-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article77-82application/pdfhttp://dx.doi.org/10.4025/actascibiolsci.v30i1.1462Acta Scientiarum Biological Sciences. , v. 30, n. 1, p. 77-82, 2008.1679-9283http://hdl.handle.net/11449/124410.4025/actascibiolsci.v30i1.1462ZOOREC:ZOOR14411070488ZOORECZOOR14411070488.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporActa Scientiarum: Biological Sciences0,208info:eu-repo/semantics/openAccess2024-06-06T13:05:23Zoai:repositorio.unesp.br:11449/1244Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:36:36.944379Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Toxicidade aguda e efeitos histopatológicos do herbicida diquat na brânquia e no fígado da tilápia nilótica (Oreochromis niloticus) Acute toxicity and histopathologic effects of diquat herbicide on the gill and liver of Nile tilapia (Oreochromis niloticus). |
title |
Toxicidade aguda e efeitos histopatológicos do herbicida diquat na brânquia e no fígado da tilápia nilótica (Oreochromis niloticus) |
spellingShingle |
Toxicidade aguda e efeitos histopatológicos do herbicida diquat na brânquia e no fígado da tilápia nilótica (Oreochromis niloticus) Peixoto Henares, Matheus Nicolino |
title_short |
Toxicidade aguda e efeitos histopatológicos do herbicida diquat na brânquia e no fígado da tilápia nilótica (Oreochromis niloticus) |
title_full |
Toxicidade aguda e efeitos histopatológicos do herbicida diquat na brânquia e no fígado da tilápia nilótica (Oreochromis niloticus) |
title_fullStr |
Toxicidade aguda e efeitos histopatológicos do herbicida diquat na brânquia e no fígado da tilápia nilótica (Oreochromis niloticus) |
title_full_unstemmed |
Toxicidade aguda e efeitos histopatológicos do herbicida diquat na brânquia e no fígado da tilápia nilótica (Oreochromis niloticus) |
title_sort |
Toxicidade aguda e efeitos histopatológicos do herbicida diquat na brânquia e no fígado da tilápia nilótica (Oreochromis niloticus) |
author |
Peixoto Henares, Matheus Nicolino |
author_facet |
Peixoto Henares, Matheus Nicolino da Cruz, Claudinei Gomes, Gabriela Roncada Pitelli, Robinson Antonio Fernandes Machado, Marcia Rita |
author_role |
author |
author2 |
da Cruz, Claudinei Gomes, Gabriela Roncada Pitelli, Robinson Antonio Fernandes Machado, Marcia Rita |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Peixoto Henares, Matheus Nicolino da Cruz, Claudinei Gomes, Gabriela Roncada Pitelli, Robinson Antonio Fernandes Machado, Marcia Rita |
description |
The lethal concentration of 50% (LC (I) and the histopathologic effects of diquat herbicide on Nile tilapia (Oreochromis niloticus) fish were evaluated in three experiments. The fishes were exposed to concentrations of 0, 25, 30, 35, 40, 45, 50, 55 and 60 rug diquat L-1, and gill and liver histology were evaluated in the surviving fishes. The estimated LC (I) (50-96h) of diquat was 37.28 mg L-1, with lower limits of 33.12 mg L-1 and upper limits of 41.44 mg L-1. In the treatment with 30, 35 and 40 mg L-1, signs of apical fusion of the secondary lamellae were observed; with 45 and 50 mg L-1, congestion of the primary lamellae was observed; in the treatment with 55 mg L-1, congestion of blood vessels on secondary lamellae took place. The livers of fishes in treatments with 0, 25, 30 and 35 mg L-1showed cordonal organization of hepatocytes. In the treatments with 40 and 45 mg L-1, hypertrophy of hepatocytes took place; with 50 and 55 mg L-1, cell fusion and the presence of vacuoles inside hepatocytes were observed. Diquat presented low risk of toxicity for nile tilapia, as the more severe histopathologic alterations occurred only in higher concentrations. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-01-01 2014-05-20T13:13:28Z 2014-05-20T13:13:28Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.4025/actascibiolsci.v30i1.1462 Acta Scientiarum Biological Sciences. , v. 30, n. 1, p. 77-82, 2008. 1679-9283 http://hdl.handle.net/11449/1244 10.4025/actascibiolsci.v30i1.1462 ZOOREC:ZOOR14411070488 ZOORECZOOR14411070488.pdf |
url |
http://dx.doi.org/10.4025/actascibiolsci.v30i1.1462 http://hdl.handle.net/11449/1244 |
identifier_str_mv |
Acta Scientiarum Biological Sciences. , v. 30, n. 1, p. 77-82, 2008. 1679-9283 10.4025/actascibiolsci.v30i1.1462 ZOOREC:ZOOR14411070488 ZOORECZOOR14411070488.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Acta Scientiarum: Biological Sciences 0,208 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
77-82 application/pdf |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129536127139840 |