Microplastic abundance in three commercial fish from the coast of Lima, Peru

Conteúdo do artigo principal

Gabriel Enrique De-la-Torre
Diana Carolina Dioses-Salinas
Barnaby Licinio Pérez-Baca
Luis Santillán

Resumo

Os microplásticos (< 5 mm) são comuns no ambiente marinho, constituindo uma grande ameaça para a biota marinha. O objetivo do presente estudo foi investigar a contaminação microplástica em três peixes amplamente difundidos e altamente comerciais da costa de Lima, Peru. Espécimes de pejerrey (Odontesthes regia), pintadilla (Cheilodactylus variegatus) e chita (Anisotremus scapularis) foram capturados na costa de Lima. O estômago e o intestino dos peixes foram extraídos e submersos em KOH a 10% (p/v), seguidos de 24 h de incubação a 60 ° C. A solução sobrenadante resultante foi filtrada a vácuo e os filtros foram então observados sob um microscópio óptico e estereomicroscópio. Medidas rigorosas de controle de qualidade e prevenção externa de contaminação foram tomadas. A abundância microplástica, tipo e cor foram registrados. As medidas de controle de qualidade resultaram em menor contaminação externa. C. variegatus foi o peixe mais contaminado (5,13 ± 0,81 MP/indivíduo), semelhante a A. scapularis (5,00 ± 0,46 MP/indivíduo), mas significativamente diferente de O. regia (0,43 ± 0,11 MP/indivíduo). As fibras eram o tipo microplástico mais abundante, enquanto o azul a cor dominante. Os resultados indicaram peixes altamente contaminados, em comparação com os de outras partes do Sudeste do Pacífico. A ingestão microplástica por C. variegatus e A. scapularis pode estar sujeita a transferência trófica de suas presas naturais. Cidades altamente povoadas e uma gestão deficiente de resíduos sólidos podem contribuir para agravar a ingestão microplástica por espécies marinhas nativas. A necessidade de mais pesquisas e um programa de monitoramento microplástico marinho foi discutida.

Detalhes do artigo

Como Citar
1.
De-la-Torre GE, Dioses-Salinas DC, Pérez-Baca BL, Santillán L. Microplastic abundance in three commercial fish from the coast of Lima, Peru. Braz. J. Nat. Sci [Internet]. 13º de setembro de 2019 [citado 29º de março de 2024];2(3):171. Disponível em: https://www.bjns.com.br/index.php/BJNS/article/view/67
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