Oxygen consumption by daphnia magna Straus as a marker of chemical stress in the aquatic environment

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

Jose C Martins (Autor) Outra; Martin L Saker (Autor) Outra; Luis Oliva O Teles (Autor) FCUP; Vitor M Vasconcelos (Autor) FCUP

Revista

Título: Environmental Toxicology and Chemistry

Vol. 26

Páginas: 1987-1991

ISSN: 0730-7268

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 15 Citações

Scopus - 15 Citações

Classificação Científica

FOS: Ciências médicas e da saúde > Medicina básica

Outras Informações

ID Authenticus: P-004-7QR

DOI: 10.1897/07-051r.1

Abstract (EN): Oxygen consumption by Daphnia magna Straus was investigated as a bioindicator for the presence of 11 common aquatic pollutants: Benzo[b]fluoranthene (BbF), mercury(II) chloride (HgCl2), 2-dimethoxyphosphinothioylthio-N-methylacetimide (dimethoate). hexachlorocyclohexane (lindane), 3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea (linuron), 4-chloro-o-tolyloxy-acetic acid. bis(tributyltin) oxide (TBTO), carbon tetrachloride (CCl4), tetramethylthiuram disulfide (thiram), 2,4,6-trichlorophenol, and arsenic trioxide (AS(2)O(3)). The measurement of oxygen consumption by D. magna was carried out after 15 and 210 min of exposure to the toxicants under controlled laboratory conditions. The technique applied in the present study was found to be useful for the detection of significant changes in oxygen consumption for most toxicants, with the exception of BbF, dimethoate, and CCl4. Significant differences in oxygen consumption were noted, relative to the control treatments, for six of the compounds after only 15 min of exposure. For thiram and TBTO, statistically significant changes in oxygen consumption were recorded after 2 10 min of exposure. The present results suggest that the measurement of oxygen consumption by D. magna is a useful biomarker and could possibly be used as a biological early warning system for detecting pollutants in the aquatic environment.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5