Entgiftungsstoffwechsel der Nordsee-Kliesche (Limanda limanda)
In the framework of monitoring programmes organizedunder several sea protection conventions (HELSINKI Conv.,OSPAR Conv.) the contracting parties are requested todevelop appropriate techniques for Biological-Effect-Monitoring. In following these recommendations the Institutfor Fisheries Ecology studies the 7-ethoxyresorufin-O-deethylase (EROD) activity in the liver of dab. ERODrepresents one enzyme of the cytochrome P-450 species,also called mixed function oxygenases (MFO), which isinduced by certain organic contaminants, e.g. PCBs. Onthe other hand, an influence of natural factors like season,temperature or spawning on the EROD activity may bepossible. The present study represents an insight into thestatus of the EROD activity in North Sea dab. Ultimately,we intend to decide if EROD activity is an appropriate toolto detect effects of contaminants. The EROD activity in theliver of 687 dabs, caught in the North Sea at different seasons in 1995 and 1996 with the fishery research vessel “Walther Herwig III”, has been determined and the data obtained have been statistically evaluated. The logarithmically transformed values of the EROD activity are following approximately a normal distribution. Due to the wide variation of the enzyme activities and due to the smallnumber of samples minor differences between samples arenot detectable. Nevertheless, comparing the enzymeactivities at different sites of the North Sea, some significant differences have been identified. A model for the discription of seasonal variations of EROD activity, developed at the Biologische Anstalt Helgoland, could be helpful for interpretation.
| Main Authors: | , |
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| Format: | article biblioteca |
| Language: | German |
| Published: |
1997
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| Subjects: | Health, Pollution, Environment, pollution, biomarker, statistical analysis, contamination, |
| Online Access: | http://hdl.handle.net/1834/21463 |
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