Ecological effects of Irgarol 1051 and Diuron on a coastal meiobenthic community: A laboratory microcosm experiment

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Autor(es): dc.contributorUniversidade Federal de São Paulo (UNIFESP)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Federal do Paraná (UFPR)-
Autor(es): dc.creatorGallucci, Fabiane-
Autor(es): dc.creatorDe Castro, Italo Braga-
Autor(es): dc.creatorPerina, Fernando Cesar-
Autor(es): dc.creatorDe Souza Abessa, Denis Modelo-
Autor(es): dc.creatorDe Paula Teixeira, Amanda-
Data de aceite: dc.date.accessioned2025-08-21T18:18:24Z-
Data de disponibilização: dc.date.available2025-08-21T18:18:24Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2015-06-08-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.ecolind.2015.05.030-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/227985-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/227985-
Descrição: dc.descriptionAfter the Tributyltin world ban, Irgarol 1051 and Diuron have been the most commonly used biocides in antifouling paints. When adsorbed to suspended particulate matter or introduced as paint particles, these compounds accumulate in marine sediments and potentially cause ecological damage to benthic organisms. Therefore, a microcosm experiment was designed to evaluate the effects of Irgarol 1051 and Diuron, individually, on a meiofaunal community with emphasis on the dominant nematode assemblages. The experiment tested two factors: Treatment (two types of controls and three environmentally relevant concentrations of each contaminant) and Exposure time (5, 15 and 30 days). Significant declines in meiofauna density, nematode species richness and diversity, and changes in multivariate community structure were observed for both biocides at all exposure levels when compared to controls. Decreases occurred early on, within five days of exposure, which suggests that mortality, and not sub-lethal effects, has befallen upon the organisms. Sediment chlorophyll a and pheopigment concentrations, and redox potential were monitored to verify any indirect effects to the fauna through changes in the environment and results gave no indications of such mediated effects pointing to a direct toxic effect of both Irgarol and Diuron on the meiofauna. Although contaminated treatments showed a significant decline in the relative abundances of a particular functional group represented by the larger, longer-lived species, we did not observe the typical expected switch to smaller, more opportunistic taxa. Indeed, differences between controls and contaminated treatments were mainly due to an overall reduction in densities of the most abundant species in contaminated treatments. The high mortality (ca. 50% decline in total abundances), changes in community structure and species loss observed at biocide levels frequently encountered in the field suggest Irgarol and Diuron as a threat to benthic communities. Such severe effects contrast to other studies that have detected lower impacts, suggesting the free-living nematodes as potential indicators of marine pollution and the microcosm approach using natural communities as an impending tool for ecotoxicological studies.-
Descrição: dc.descriptionInstituto Do Mar da Universidade Federal de São Paulo, Av. Alm. Saldanha da Gama, 89-
Descrição: dc.descriptionCentro de Biologia Marinha da Universidade de São Paulo, Rodovia Manoel Hypólito Do Rego, km 131.5-
Descrição: dc.descriptionInstituto Oceanografico da Universidade de Sao Paulo, Praca Do Oceanografico, 191, Cidade Universitária-
Descrição: dc.descriptionUniversidade Estadual de São Paulo, Campus Experimental Do Litoral Paulista, Praça Infante Dom Henrique, s/n-
Descrição: dc.descriptionCentro de Estudos Do Mar da Universidade Federal Do Paraná, Av. Beira-mar, s/n-
Descrição: dc.descriptionUniversidade Estadual de São Paulo, Campus Experimental Do Litoral Paulista, Praça Infante Dom Henrique, s/n-
Formato: dc.format21-31-
Idioma: dc.languageen-
Relação: dc.relationEcological Indicators-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAntifouling paints-
Palavras-chave: dc.subjectBooster biocides-
Palavras-chave: dc.subjectEcotoxicology-
Palavras-chave: dc.subjectMeiofauna-
Palavras-chave: dc.subjectMicrocosm-
Palavras-chave: dc.subjectNematode-
Título: dc.titleEcological effects of Irgarol 1051 and Diuron on a coastal meiobenthic community: A laboratory microcosm experiment-
Tipo de arquivo: dc.typelivro digital-
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