Effects of chlorpyrifos on cholinesterase activity and stress markers in the tropical reef fish Acanthochromis polyacanthus

Botté, E.S., Jerry, D.R., King, S. Codi, Smith-Keune, C., and Negri, A.P. (2012) Effects of chlorpyrifos on cholinesterase activity and stress markers in the tropical reef fish Acanthochromis polyacanthus. Marine Pollution Bulletin, 65 (4-9). pp. 384-393.

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Tropical coastal ecosystems, including the Great Barrier Reef (GBR) of Australia are increasingly threatened by pollution; yet few studies have investigated the sensitivity of GBR species to these pollutants. Here we exposed juveniles of the tropical reef fish Acanthochromis polyacanthus (spiny damselfish) to three concentrations of the insecticide chlorpyrifos (CPF) and measured (i) muscle cholinesterase (ChE) activity; (ii) hepatic glutathione-S-transferase (GST) activity; and (iii) coenzyme Q (CoQ) redox balance, after 6 h and 96 h of exposure. After 96 h, muscle ChE activity was significantly inhibited by 26%, 49% and 53% when fish were exposed to 1, 10 or 100 μg/L CPF, respectively. Muscle ChE characterization revealed three types of ChEs, including two atypical forms. Hepatic CoQ antioxidant form significantly increased at 10 μg/L after 6 h of exposure, potentially demonstrating an early response to CPF-induced oxidative stress in liver. Hepatic GST was not affected by CPF exposure.

Item ID: 20192
Item Type: Article (Research - C1)
ISSN: 1879-3363
Keywords: pesticide, chlorpyrifos, tropical reef fish, cholinesterase, oxidative stress, Acanthochromis polyacanthus
Additional Information:

Special Issue of Marine Pollution Bulletin: The Catchment to Reef Continuum: Case studies from the Great Barrier Reef. Edited by Michelle Devlin and Britta Schaffelke.

Date Deposited: 29 Feb 2012 05:28
FoR Codes: 06 BIOLOGICAL SCIENCES > 0604 Genetics > 060408 Genomics @ 50%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070401 Aquaculture @ 50%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830104 Aquaculture Oysters @ 100%
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