Woods Hole Oceanographic Institution

Tim Verslycke

»Copepod diapause
»Lobster Shell Disease
»Crustacean molting receptor
»Lobster Shell Disease
»Mysids as test models for endocrine disruption testing
»Chlorotriazines in the Scheldt estuary
»Energy allocation in grasshopper
»Estrogens in Scheldt estuary
»Marsupial development in mysids to evaluate endocrine disruption
»B[a]P effects on steroid metabolism in mysid
»Ciona CYP3 genes
»Methoprene, nonylphenol, and estrone effects on mysid vitellogenesis
»Methoprene effects on mysid molting
»Mysid growth
»Mysid vitellin ELISA
»Mysid vitellin
»An analytical method to detect estrogens in water
»High levels of endocrine disruptors in wild mysid populations
»Energy allocation in wild mysid populations
»Cellular energy allocation validation with scope for growth
»Dolphin delivery prediction
»PhD thesis
»Endocrine disruptor effects on steroid and energy metabolism in mysid
»Mysid review
»TBT effects on steroid metabolism in mysid
»Metal mixture toxicity to mysid
»TBT effects on energy metabolism in mysid
»dichlorobenzene effects in zebrafish
»Ethinylestradiol effects on amphipod sexual development
»Metabolic studies with mysids
»Abiotic stress and energy metabolism in mysid
»Induced vitellogenesis in rainbow trout
»Steroid metabolism in mysid
»Endocrine disruption in freshwater snails
»Invasive mysid in Belgium

Herlinde Noppe, An Ghekiere, Tim Verslycke, Eric De Wulf, Karolien Verheyden, Els Monteyne, Karen Polfliet, Peter Van Caeter, Colin R. Janssen and Hubert F. De Brabander, Ditribution and ecotoxicity of chlorotriazines in the Scheldt estuary (B-Nl), Environmental Pollution, in press

As part of the Endis-Risks project, the current study describes the occurrence of the chlorotriazine pesticides atrazine, simazine and terbutylazine in water, sediment and suspended matter over a period of 4 years (2002-2005). Atrazine was found to be the herbicide exhibiting the highest concentration in the different matrices, varying from 10 to 736 ng/l in water and from 5 up to 10 ng/g in suspended matter. Simazine and terbutylazine were detected at lower concentrations in water, up to 313 ng/l and 261 ng/l, respectively. Traces of the targeted pesticides were also detected in sediments, but these were below the limit of quantification. As part of an ecotoxicological assessment, we studied the potential effect of atrazine on molting of the mysid Neomysis integer (Crustacea:Mysidacea), a resident invertebrate of the Scheldt Estuary. Following chronic exposure (~3 weeks), atrazine did not affect mysid molting at environmentally relevant concentrations (up to 1 µg/l).

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