Comparison of pulp mill effluent impact on EROD activity and genotoxicity induction between two Gambusia holbrooki groups

• Type: Article in International Scientific Journal
• Date: 2002

Authors

Pacheco, M (Author) Other; Marques, CR (Author) Other; Antunes, SC (Author) Other; Goncalves, F (Author) Other; Santos, MA (Author) Other

Journal

Title: Fresenius Environmental Bulletin

Vol. 11

Pages: 237-242

ISSN: 1018-4619

Publisher: Technische Universitat Munchen

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 3 Citations

Scientific classification

FOS: Natural sciences > Earth and related Environmental sciences

Other information

Authenticus ID: P-000-PFH

Abstract (EN): This study concerns the total ethoxyresorufin O-deethylase (EROD) activity, acetylcholinesterase (AChE) activity and erythrocytic nuclear abnormality (ENA) frequencies in two female groups - field (F) and laboratory adapted (L) - of Gambusia holbrooki exposed to bleached kraft pulp mill effluent (BKPME) contaminated river water. Water samples were collected in the Vouga River (Cacia, Portugal) upstream (R) and downstream (P1, P2, P3) the effluent outlet, and used to expose the fish (2, 4 and 6 hrs). Genotoxicity was documented by the F group exposed to the least diluted BKPME (P1), whereas its EROD activity induction was significant at the most diluted BKPME (P3) after 6-hr exposure. L group failed to exhibit any of the previous responses. The initial physiological condition of each fish group clearly influenced their responses. P1 seems to contain a high concentration of cytotoxic and genotoxic compounds, whereas the dilution factor in P3 seems to be responsible for the EROD induction, previously inhibited in P1.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6