Acta Limnologica Brasiliensia
https://actalb.org/article/doi/10.1590/S2179-975X3020
Acta Limnologica Brasiliensia
Short Research Note

First record of microplastics in two freshwater fish species (Iheringhthys labrosus and Astyanax lacustris) from the middle section of the Uruguay River, Brazil

Primeiro registro de microplástico em duas espécies de peixe (Iheringhthys labrosus e Astyanax lacustris) num trecho do Médio Rio Uruguai, Brasil

Tacieli dos Santos; Rodrigo Bastian; Juliana Felden; Adelita Maria Rauber; David Augusto Reynalte-Tataje; Franco Teixeira de Mello

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Abstract

Abstract:

Aim: The aim was to analyze the incidence of microplastics in the diet of fish in the middle Uruguay River.

Methods: The present work analyzed the gastrointestinal content of two species: Astyanax lacustris and Iheringichthys labrosus.

Results: This study provides the first evidence of synthetic materials, such as fibres and plastics in the gastrointestinal tract of fish species in the Middle Uruguay River basin. A sample of sixty-one A. lacustris and twenty-nine I. labrosus were examined to highlight the ingestion of microplastics in the middle section of the Uruguay River in Brazil. In the A. lacustris, eleven fibres and two fragments were found in their gastrointestinal contents, corresponding to 18.1% of the specimens, while in the I. labrosus, twelve fibres and one fragment were found, corresponding to 34.5% of the specimens analyzed. Blue staining was also prevalent in the occurrence of microplastics.

Conclusions: These data are the first record of microplastics in this zone and represent a baseline for this contamination for future studies.
 

Keywords

environmental contamination, freshwater fishes, Uruguay River, microplastic ingestion

Resumo

Resumo:

Objetivo: O objectivo foi analisar a incidência de microplásticos na dieta dos peixes no meio do Rio Uruguai.

Métodos: O presente trabalho analisou o conteúdo gastrointestinal de duas espécies: Astyanax lacustris e Iheringichthys labrosus.

Resultados: Uma amostra de sessenta e um indivíduos de A. lacustris e vinte e nove indivíduos de I. labrosus foi examinada para destacar a ingestão de microplásticos na seção média do rio Uruguai no Brasil. Em A. lacustris, foram encontradas onze fibras e dois fragmentos em seu conteúdo gastrointestinal, correspondendo a 18,1% das amostras, enquanto no I. labrosus foram encontradas doze fibras e um fragmento, correspondentes a 34,5% das amostras analisadas. A coloração azul também foi prevalente na ocorrência de microplásticos.

Conclusões: Esses dados são o primeiro registro de microplásticos nessa zona e representam uma linha de base para essa contaminação para estudos futuros.
 

Palavras-chave

contaminação ambiental, peixes de água doce, Rio Uruguai, ingestão microplástica

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Submitted date:
04/09/2020

Accepted date:
08/14/2020

Publication date:
10/08/2020

5f7f52340e88254a6aa212e4 alb Articles
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Acta Limnol. Bras. (Online)

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