Microplastic ingestion by Characidae in rural streams (Rio Grande do Sul, Brazil)

Leandro  Ferrari; Luiz Ubiratan Hepp

doi:10.5007/2175-7925.2021.e81780

Autores

Leandro Ferrari
Luiz Ubiratan Hepp UFMS

DOI:

https://doi.org/10.5007/2175-7925.2021.e81780

Resumo

Os microplásticas (MP) causam vários efeitos negativos sobre a biodiversidade, desde o ecossistema até os níveis individuais, podendo ser facilmente consumidos por pequenos invertebrados e peixes. O aumento da produção de plástico e a ausência de sistemas eficientes de gerenciamento desses resíduos facilitam sua presença em ambientes aquáticos. Neste estudo, avaliamos a presença de MP no conteúdo estomacal de quatro espécies de caracídeos em riachos rurais na porção superior da bacia hidrográfica do rio Uruguai (norte do Rio Grande do Sul). Dentre o total de organismos coletados (n = 121), observou-se a presença de MP em 72% do conteúdo estomacal analisado. Bryconamericus iheringii apresentou a maior ocorrência de MP (85,7%), seguida por Astyanax lacustris (69,4%), Astyanax henseli (69,1%) e Oligosarchus breviostris (66,7%). Nossos resultados demonstram a alta ocorrência de MP em ambientes aquáticos de água doce, especialmente riachos rurais. Os resultados observados neste estudo reafirmam a importância da conservação dos riachos, a partir da manutenção da vegetação ripária como uma forma de reduzir a entrada de MP nesses ecossistemas.

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Ingestão de microplásticos por Characidae em riachos rurais (Rio Grande do Sul, Brasil)

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