Multi-generation effects of lead (Pb) on two Daphnia species

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversity of Aveiro-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorde Araujo, Giuliana Seraphim-
Autor(es): dc.creatorFerreira, Abel Luís Gonçalves-
Autor(es): dc.creatorda Maia Soares, Amadeu Mortágua Velho-
Autor(es): dc.creatorAbessa, Denis Moledo de Souza-
Autor(es): dc.creatorLoureiro, Susana-
Data de aceite: dc.date.accessioned2025-08-21T20:31:22Z-
Data de disponibilização: dc.date.available2025-08-21T20:31:22Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s10646-024-02779-3-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/305564-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/305564-
Descrição: dc.descriptionTwo monophyletic Daphnia species (Daphnia magna and D. similis) were exposed to a sub-lethal concentration of Pb (50 µg/L) for nine generations under two food regimes (usual and restricted) and analyzed for acetylcholinesterase (AChE) activity, first reproduction delay, lifespan, and net reproductive rate (R0) at the subcellular, individual, and population levels, respectively. In the sixth generation, Pb-acclimated neonates were moved to clean media for three more generations to check for recovery. The net reproductive rate (R0) of D. magna was not affected by Pb. However, Pb stimulated reproduction, reduced lifespan, and decreased AChE activity. First reproduction delay and lifespan did not improve during the recovery process, suggesting a possible genetic adaptation. Food restriction reduced R0, lifespan, delayed hatching, and increased AChE activity; the opposite outcomes were observed for D. similis. The full recovery shown by R0 suggests the physiological acclimation of D. similis. Under food restriction, the animals exhibited a reduction of R0 and lifespan, delayed first reproduction, and increased AChE activity; however, there was no effect of Pb. The recovery process under food restriction showed that D. similis might not cope with Pb exposure, indicating a failed recovery. Such outcomes indicate that one model species’ sensitivity may not represent another’s sensitivity.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação para a Ciência e a Tecnologia-
Descrição: dc.descriptionCESAM-Centre for Environmental and Marine Studies & amp; Department of Biology University of Aveiro-
Descrição: dc.descriptionUniversidade Estadual Paulista - UNESP, Campus do Litoral Paulista, SP-
Descrição: dc.descriptionUniversidade Estadual Paulista - UNESP, Campus do Litoral Paulista, SP-
Descrição: dc.descriptionCNPq: 201788/2014-4-
Descrição: dc.descriptionCNPq: 311609/2014-7-
Descrição: dc.descriptionFundação para a Ciência e a Tecnologia: PTDC/AAC-AMB/117178/2010-
Formato: dc.format801-817-
Idioma: dc.languageen-
Relação: dc.relationEcotoxicology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAcetylcholinesterase-
Palavras-chave: dc.subjectLifespan-
Palavras-chave: dc.subjectMulti-generation-
Palavras-chave: dc.subjectNet reproductive rate (R0)-
Palavras-chave: dc.subjectReproduction delay-
Título: dc.titleMulti-generation effects of lead (Pb) on two Daphnia species-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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