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Relationship between pesticide accumulation in transplanted zebra mussel (Dreissena polymorpha) and community structure of aquatic macroinvertebrates

Bashnin, Tayebeh ; Verhaert, Vera ; De Jonge, Maarten ; Vanhaecke, Lynn ; Teuchies, Johannes ; Bervoets, Lieven

Environmental pollution (1987), 2019-09, Vol.252 (Pt A), p.591-598 [Periódico revisado por pares]

England: Elsevier Ltd

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  • Título:
    Relationship between pesticide accumulation in transplanted zebra mussel (Dreissena polymorpha) and community structure of aquatic macroinvertebrates
  • Autor: Bashnin, Tayebeh ; Verhaert, Vera ; De Jonge, Maarten ; Vanhaecke, Lynn ; Teuchies, Johannes ; Bervoets, Lieven
  • Assuntos: Bioavailability ; Biomonitoring ; Dissolved metals ; Ecological status ; Pesticides
  • É parte de: Environmental pollution (1987), 2019-09, Vol.252 (Pt A), p.591-598
  • Descrição: This study examined to what degree bioaccumulated pesticides in transplanted zebra mussels can give an insight to pesticide bioavailability in the environment. In addition, it was investigated if pesticide body residues could be related to ecological responses (changes in macroinvertebrate community composition). For this at 17 locations, 14 pesticide concentrations and nine dissolved metals were measured in translocated zebra mussels and the results were related to the structure of the macroinvertebrate community. Critical body burdens in zebra mussel, above which the ecological status was always low, could be estimated for chlorpyrifos, terbuthylazine and dimethoate being respectively 8.0, 2.08 and 2.0 ng/g dry weight. With multivariate analysis, changes in the community structure of the macroinvertebrates were related to accumulated pesticides and dissolved metals. From this analysis, it was clear that the composition of the macroinvertebrate communities was not only affected by pesticides but also by metal pollution. Two different regions could be clearly separated, one dominated by metal pollution, and one where pesticide pollution was more important. The results of this study demonstrated that zebra mussel body burdens can be used to measure pesticide bioavailability and that pesticide body burdens might give insight in the ecological impacts of pesticide contamination. Given the interrelated impacts of pesticides and heavy metals, it is important to further validate all threshold values before they can be used by regulators. [Display omitted] •Transplanted zebra mussels can be used to relate bioaccumulated pesticide concentrations to ecological water quality.•Low ecological water quality always corresponded with high pesticide accumulation.•Critical body concentrations in caged zebra mussels could be estimated for five of the 14 pesticides.•Pesticide body burdens in zebra mussel can be used to measure pesticide bioavailability in surface water. High zebra mussels pesticide body burden proved to be a good predictor for low environmental quality.
  • Editor: England: Elsevier Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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