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Use este identificador para citar ou linkar para este item: https://repositorio.ufba.br/handle/ri/6367
Tipo: Artigo de Periódico
Título: In situ and laboratory bioassays using Poecilia reticulata Peters, 1859 in the biomonitoring of an acidic lake at Camaçari, BA, Brazil
Título(s) alternativo(s): Chemosphere
Autor(es): Araújo, Cristiano Venícius de Matos
Cohin-de-Pinho, Salomão J.
Santos, Jéssica da S.
Delgado, Flávia
Santana, Lúcia C.S.
Chastinet, Carla de Barros e Azevedo
Silva, Eduardo Mendes da
Autor(es): Araújo, Cristiano Venícius de Matos
Cohin-de-Pinho, Salomão J.
Santos, Jéssica da S.
Delgado, Flávia
Santana, Lúcia C.S.
Chastinet, Carla de Barros e Azevedo
Silva, Eduardo Mendes da
Abstract: The suitability and viability of acute in situ bioassays were investigated in the biomonitoring program of an acidic lake contaminated with sulphur residues. Responses of organisms observed in laboratory and in situ bioassays were also assessed to determine whether or not they were similar and comparable, regarding accuracy and precision. Newborn Poecilia reticulata were employed as test organisms and exposed to the same water samples under in situ and laboratory conditions. Mortality/immobility was the endpoint assessed and dead/immobile organisms were counted at various time intervals during exposure. The mean calculated LT50 values and 95% confidence intervals were 1.61 (1.36–1.87) h in the laboratory bioassays and 0.72 (0.55–0.89) h in the in situ bioassays. Statistical comparison of these values revealed a significant difference (p < 0.05). In situ bioassays were more accurate than those carried out in the laboratory, demonstrating higher sensitivity and better reproduction of what occurs in nature, while laboratory bioassays were more precise.
Palavras-chave: Acidification
Acute Tox­icity
Dunas Lake
Lethal time
Editora / Evento / Instituição: Chemosphere
URI: http://www.repositorio.ufba.br/ri/handle/ri/6367
Data do documento: 2006
Aparece nas coleções:Artigo Publicado em Periódico (Biologia)

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