Polymethylmethacrylate nanoplastics effects on the freshwater cnidarian Hydra viridissima

Detalhes bibliográficos
Autor(a) principal: Venâncio, C.
Data de Publicação: 2021
Outros Autores: Savuca, A., Oliveira, M., Martins, M. A., Lopes, I.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/37688
Resumo: The current understanding of nanoplastics (NPLs) toxicity to freshwater biota, especially the potential toxic effects of polymethylmethacrylate (PMMA), remains limited. Thus, the present work intended to add knowledge about the ecotoxicity of ∼40 nm PMMA-NPLs focusing on lethality, morphology, feeding and regeneration capacity of the freshwater cnidarian Hydra viridissima, after an exposure period of 96 h. Results showed that high concentrations of PMMA-NPLs can impair the survival of H. viridissima, with an estimated 96 h-LC50 of 84.0 mg PMMA-NPLs/L. Several morphological alterations were detected at concentrations below 40 PMMA-NPLs mg/L, namely partial or total loss of tentacles, which, however, did not induce significant alterations on the feeding rates. Morphological alterations not previously reported in the literature were also found after the 96 h exposure, such as double or elbow-like tentacles. Exposure to 40 mg PMMA-NPLs/L significantly impacted hydra regeneration, with organisms exposed to PMMA-NPLs presenting significant slower regeneration rates comparatively to controls, but with no impacts on the feeding rates. Overall, this work highlights the need to assess the effects of NPLs in freshwater biota. Hydra viridissima species was sensitive in a wide range of endpoints showing its value as a biological model to study the effects of small plastic particles.
id RCAP_c3784619857c3465d5b257229052bd0f
oai_identifier_str oai:ria.ua.pt:10773/37688
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Polymethylmethacrylate nanoplastics effects on the freshwater cnidarian Hydra viridissimaEcotoxicity assayPlasticsPMMAFreshwaterRegenerationMorphologyFeedingThe current understanding of nanoplastics (NPLs) toxicity to freshwater biota, especially the potential toxic effects of polymethylmethacrylate (PMMA), remains limited. Thus, the present work intended to add knowledge about the ecotoxicity of ∼40 nm PMMA-NPLs focusing on lethality, morphology, feeding and regeneration capacity of the freshwater cnidarian Hydra viridissima, after an exposure period of 96 h. Results showed that high concentrations of PMMA-NPLs can impair the survival of H. viridissima, with an estimated 96 h-LC50 of 84.0 mg PMMA-NPLs/L. Several morphological alterations were detected at concentrations below 40 PMMA-NPLs mg/L, namely partial or total loss of tentacles, which, however, did not induce significant alterations on the feeding rates. Morphological alterations not previously reported in the literature were also found after the 96 h exposure, such as double or elbow-like tentacles. Exposure to 40 mg PMMA-NPLs/L significantly impacted hydra regeneration, with organisms exposed to PMMA-NPLs presenting significant slower regeneration rates comparatively to controls, but with no impacts on the feeding rates. Overall, this work highlights the need to assess the effects of NPLs in freshwater biota. Hydra viridissima species was sensitive in a wide range of endpoints showing its value as a biological model to study the effects of small plastic particles.Elsevier2023-05-11T14:00:01Z2021-01-15T00:00:00Z2021-01-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/37688eng0304-389410.1016/j.jhazmat.2020.123773Venâncio, C.Savuca, A.Oliveira, M.Martins, M. A.Lopes, I.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T12:13:36Zoai:ria.ua.pt:10773/37688Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:08:17.632493Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Polymethylmethacrylate nanoplastics effects on the freshwater cnidarian Hydra viridissima
title Polymethylmethacrylate nanoplastics effects on the freshwater cnidarian Hydra viridissima
spellingShingle Polymethylmethacrylate nanoplastics effects on the freshwater cnidarian Hydra viridissima
Venâncio, C.
Ecotoxicity assay
Plastics
PMMA
Freshwater
Regeneration
Morphology
Feeding
title_short Polymethylmethacrylate nanoplastics effects on the freshwater cnidarian Hydra viridissima
title_full Polymethylmethacrylate nanoplastics effects on the freshwater cnidarian Hydra viridissima
title_fullStr Polymethylmethacrylate nanoplastics effects on the freshwater cnidarian Hydra viridissima
title_full_unstemmed Polymethylmethacrylate nanoplastics effects on the freshwater cnidarian Hydra viridissima
title_sort Polymethylmethacrylate nanoplastics effects on the freshwater cnidarian Hydra viridissima
author Venâncio, C.
author_facet Venâncio, C.
Savuca, A.
Oliveira, M.
Martins, M. A.
Lopes, I.
author_role author
author2 Savuca, A.
Oliveira, M.
Martins, M. A.
Lopes, I.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Venâncio, C.
Savuca, A.
Oliveira, M.
Martins, M. A.
Lopes, I.
dc.subject.por.fl_str_mv Ecotoxicity assay
Plastics
PMMA
Freshwater
Regeneration
Morphology
Feeding
topic Ecotoxicity assay
Plastics
PMMA
Freshwater
Regeneration
Morphology
Feeding
description The current understanding of nanoplastics (NPLs) toxicity to freshwater biota, especially the potential toxic effects of polymethylmethacrylate (PMMA), remains limited. Thus, the present work intended to add knowledge about the ecotoxicity of ∼40 nm PMMA-NPLs focusing on lethality, morphology, feeding and regeneration capacity of the freshwater cnidarian Hydra viridissima, after an exposure period of 96 h. Results showed that high concentrations of PMMA-NPLs can impair the survival of H. viridissima, with an estimated 96 h-LC50 of 84.0 mg PMMA-NPLs/L. Several morphological alterations were detected at concentrations below 40 PMMA-NPLs mg/L, namely partial or total loss of tentacles, which, however, did not induce significant alterations on the feeding rates. Morphological alterations not previously reported in the literature were also found after the 96 h exposure, such as double or elbow-like tentacles. Exposure to 40 mg PMMA-NPLs/L significantly impacted hydra regeneration, with organisms exposed to PMMA-NPLs presenting significant slower regeneration rates comparatively to controls, but with no impacts on the feeding rates. Overall, this work highlights the need to assess the effects of NPLs in freshwater biota. Hydra viridissima species was sensitive in a wide range of endpoints showing its value as a biological model to study the effects of small plastic particles.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-15T00:00:00Z
2021-01-15
2023-05-11T14:00:01Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/37688
url http://hdl.handle.net/10773/37688
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0304-3894
10.1016/j.jhazmat.2020.123773
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799137735871561728