Poluição por microplásticos nos oceanos pode espalhar patógenos que matam animais ameaçados de extinção

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Os cientistas descobriram um novo problema decorrente da poluição microplástica – a possível disseminação de doenças causadas por parasitas.

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A presença desta substância nos oceanos e outras massas de água tem levado a comunidade científica a alertar para possíveis ameaças aos ecossistemas marinhos

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No entanto, o estudo foi capaz de demonstrar a possibilidade de que esses materiais sejam veículos de transporte de parasitas.

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A pesquisa, publicada na Scientific Reports, analisou a presença de microplásticos e patógenos causadores de doenças

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As doenças analisadas no estudo incluíram Toxo, Cryptosporidium e Giardia. Quando as mulheres grávidas são infectadas, as bactérias podem causar uma variedade de problemas de saúde

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Esses patógenos são originários de animais terrestres e hospedeiros humanos, e sua presença no oceano se deve à contaminação dos ecossistemas por esgotos jogados no mar

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Os especialistas realizaram testes de laboratório e conseguiram mostrar que os parasitas se ligam aos microplásticos com a ajuda de biofilmes

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Uma camada de bactérias que se forma quando os plásticos entram em contato com a água. Sua superfície pegajosa permite que bactérias e parasitas se prendam ao material, mesmo no mar.

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Ao final do estudo, duas a três vezes mais parasitas puderam ser observados no plástico do que na água. O tipo de microplástico mais eficiente para transportar essas bactérias são as microfibras.

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Confira a matéria COMPLETA NO SITE

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