Variation of Antioxidant Enzyme Activities of Sprat ( Sprattus sprattus ) Larvae and Organic Contaminant Levels in Mixed Zooplankton from the Southern North Sea
Identifieur interne : 001475 ( Main/Merge ); précédent : 001474; suivant : 001476Variation of Antioxidant Enzyme Activities of Sprat ( Sprattus sprattus ) Larvae and Organic Contaminant Levels in Mixed Zooplankton from the Southern North Sea
Auteurs : L. D Peters [Royaume-Uni] ; C. Porte [Espagne] ; D. R Livingstone [Royaume-Uni]Source :
- Marine Pollution Bulletin [ 0025-326X ] ; 2001.
Abstract
Sprat (Sprattus sprattus) larvae and mixed zooplankton were collected from sites in the southern North Sea across three transects running north, north-west and west from the Elbe and Weser estuaries (Germany). Sprat larval sub-cellular fractions (13500 g supernatants) were assayed for the antixoxidant enzymes catalase (EC 1.11.1.6) and superoxide dismutase (SOD; EC 1.15.1.1), and levels of polychlorobiphenyls (PCBs), p,p′-DDE and polycyclic aromatic hydrocarbons (PAHs) were determined in the mixed zooplankton (fish larval diet). Higher levels (p<0.05) of SOD and catalase activities were observed at sites closest to estuaries corresponding to sites with the highest levels (p<0.05) of total PCBs and p,p′-DDE. Antioxidant enzymes activities decreased in samples collected from sites further from the estuaries across a northern and north-western transect; however this was not observed across a western transect. Larval antioxidant enzyme activities are discussed in relation to potential processes affecting them including plankton contaminant level distributions.
Url:
DOI: 10.1016/S0025-326X(01)00088-1
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