IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Printer-friendly version

Endocrine alteration in juvenile cod and turbot exposed to dispersed crude oil and alkylphenols
Martin-Skilton, R.; Thibaut, R.; Porte, C. (2006). Endocrine alteration in juvenile cod and turbot exposed to dispersed crude oil and alkylphenols. Aquat. Toxicol. 78(Suppl. 1): S57-S64. hdl.handle.net/10.1016/j.aquatox.2006.02.017
In: Aquatic Toxicology. Elsevier Science: Tokyo; New York; London; Amsterdam. ISSN 0166-445X, more
Peer reviewed article  

Also published as
  • Martin-Skilton, R.; Thibaut, R.; Porte, C. (2006). Endocrine alteration in juvenile cod and turbot exposed to dispersed crude oil and alkylphenols, in: Pampanin, D.M. et al. (Ed.) The Stavanger Workshop: Biological Effects of Environmental Pollution (BEEP) in marine coastal ecosystem: the Stavanger mesocosm exposure studies. Aquatic Toxicology, Special Issue 78(Suppl. 1): pp. S57-S64. dx.doi.org/10.1016/j.aquatox.2006.02.017, more

Available in  Authors 
Document type: Conference paper

Keywords
    Marine fish; Oil spills; Marine

Authors  Top 
  • Martin-Skilton, R.
  • Thibaut, R.
  • Porte, C.

Abstract
    Juvenile Atlantic cod (Gadus morhua) and turbot (Scophthalmus maximus) were exposed for 3 weeks in a continuous water flow to 0.5 ppm of dispersed North Sea crude oil, 0.5 ppm of dispersed North Sea crude oil spiked with 0.1 ppm of a mixture of alkylphenols (offshore oil production), and 30 ppb of nonylphenol (NP). As potential markers of endocrine alteration, key enzymatic activities involved in both synthesis (17ß-hydroxysteroid dehydrogenases and P450 aromatase) and metabolism (liver UDP-glucuronosyltransferases (UGT) and sulfotransferases) of steroids were assessed together with circulating levels of testosterone and estradiol in plasma. NP-exposed turbot had lower ovarian P450 aromatase, lower levels of testosterone and estradiol in plasma, and lower glucuronidation rates of sex steroids than those from the control group. In contrast, higher liver UGT-testosterone, and a trend towards higher P450 aromatase was detected in oil-exposed specimens. Those exposed to the combination oil + alkylphenols had lower levels of estradiol in plasma than controls, and no significant effects on any the enzymatic activities tested was observed. All these alterations were more evident in turbot than in cod. In fact, apart from a higher glucuronidation rate of estradiol detected in the liver of NP-exposed cod, no significant differences were observed between control and exposed cod.

All data in IMIS is subject to the VLIZ privacy policy Top | Authors