Metal contamination in harbours impacts life-history traits and metallothionein levels in snails
作者： Maria Alexandra Bighiu , Elena Gorokhova , Bethanie Carney Almroth , Ann-Kristin Eriksson Wiklund
DOI: 10.1371/JOURNAL.PONE.0180157
关键词: Leaching (agriculture) 、 Salinity 、 Biota 、 Nutrient 、 Theodoxus fluviatilis 、 Contamination 、 Environmental chemistry 、 Sediment 、 Biocide
摘要: Harbours with limited water exchange are hotspots of contaminant accumulation. Antifouling paints (AF) contribute to this accumulation by leaching biocides that may affect non-target species. In several leisure boat harbours and reference areas in the Baltic Sea, chronic exposure effects were evaluated using caging experiments snail Theodoxus fluviatilis. We analysed variations ecologically relevant endpoints (mortality, growth reproduction) concert variation metallothionein-like proteins (MTLP) levels. The latter is a biomarker metals, such as copper (Cu) zinc (Zn), which used AF active ingredient stabilizer, respectively. addition, environmental samples (water, sediment) for metal (Cu Zn) nutrient (total phosphorous nitrogen) concentrations. All life-history negatively affected exposure, higher mortality, reduced lower fecundity compared sites. Metal concentrations key explanatory variables all observed adverse effects, suggesting metal-driven toxicity, likely stem from paints, source anthropogenic stress biota harbours.
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