Programa de Pós-graduação em Biologia de Ambientes Aquáticos Continentais, Fundação Universidade do Rio Grande, Av. Itália, Km 8 - Campus Carreiros, Rio Grande, Rio Grande do Sul, 96203-900, Brazil.
Laboratório de Biomonitoramento, Universidade Regional Integrada do Alto Uruguai e das Missões, Av. Sete de Setembro, 1621, Erechim, Rio Grande do Sul, 99709-910, Brazil.
Environ Sci Pollut Res Int. 2018 Jun;25(18):17402-17408. doi: 10.1007/s11356-018-1971-9. Epub 2018 Apr 13.
Metals from agricultural areas are responsible for soil contamination and are carried into aquatic ecosystems. In this context, we evaluated the incorporation of zinc and copper via three feeding strategies (shredding, herbivory and predators) in assemblages of stream insects. We collected aquatic insects in five agricultural streams and five natural streams in Atlantic forest biome to investigate the accumulation of copper and zinc in insects with different feeding strategies. We found no significant differences in the concentrations of copper and zinc between stream types among all insect-feeding groups compared. However, we observed that copper accumulate concentrations differed significantly among the shredders and predators in relation to their resource in streams, while zinc concentrations differed in the two feeding strategy. Therefore, the investigation of the transfer of copper and zinc by different feeding strategies in streams can contribute to the understanding of changes in aquatic insect assemblages related to agricultural activities around streams.
农业区的金属是造成土壤污染的原因，并被带入水生生态系统。在这种情况下，我们评估了通过三种摄食策略（切碎、食草和捕食）将锌和铜纳入溪流昆虫组合中的情况。我们在大西洋森林生物群落的五个农业溪流和五个天然溪流中收集水生昆虫，以调查不同摄食策略的昆虫中铜和锌的积累情况。我们发现，与所有以昆虫为食的群体相比，溪流类型之间铜和锌的浓度没有显著差异。然而，我们观察到，在与溪流资源有关的碎食者和捕食者中，铜的积累浓度存在显著差异，而锌的浓度在两种摄食策略中存在差异。因此，研究不同摄食策略在溪流中对铜和锌的转移，可以帮助我们了解与溪流周围农业活动有关的水生昆虫组合的变化。
