Lethal and sublethal effects of metal-polluted sediments on Chironomus sancticaroli Strixino and Strixino, 1981

Autor(es)

de Souza Beghelli, Frederico Guilherme ^[1] ; Cesar Lopez-Doval, Julio ^{[2, 3]} ; Henrique Rosa, Andre ^[1] ; Pompeo, Marcelo ^{[1, 3]} ; Moschini Carlos, Viviane ^[1]

Afiliação do(s) autor(es)

^[1] UNESP, Programa Posgrad Ciencias Ambientais, Inst Ciencia & Tecnol Sorocaba, Ave Tres Marco 511, BR-18087180 Rio De Janeiro - Brazil

^[2] Catalan Inst Water Res ICRA, Carrer Emili Grahit 101, Girona 17003 - Spain

^[3] Univ Sao Paulo, Dept Ecol, Inst Biociencias, Rua Matao 321, Travessa 14, Cidade Univ, BR-05508090 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ECOTOXICOLOGY; v. 27, n. 3, p. 286-299, APR 2018.
• Citações Web of Science: 1

Resumo

The Cantareira Complex is one of the most important water supplies of the metropolitan region of So Paulo, Brazil. Previously, it was demonstrated that the sediments in this complex were polluted with metals and that Paiva Castro Reservoir-the last reservoir in the sequence, which receives water from the five previous reservoirs-was the reservoir with the greatest concentration of pollutants. Based on field data, it was noticed that copper concentrations in sediments were related to morphological alterations in chironomids. The present study provides novel monitoring methods and results for the complex by isolating the environmental and biological sources of variation. An adaptation of the in situ assay proposed by Soares et al. (Arch Environ Contam Toxicol 49:163-172, 2005), which uses a native tropical Chironomus species and low-cost materials, is also provided. The aim of this study was to isolate the effects of sediments from Paiva Castro on controlled populations of C. sancticaroli larvae using an in situ assay. A seven-day experiment was performed in triplicate. Third instar larvae were inoculated in chambers containing sediments from two distinct regions of Paiva Castro reservoir and a control site with sand. Five biological responses were considered: mouthpart alterations, larval length, width of cephalic capsule, mortality and total damage. The results suggest the effects of sediment toxicity on larvae include a reduction in length and a higher occurrence of total damage. (AU)

• Processo FAPESP: 12/11890-4 - Contaminação por metais pesados no sedimento de reservatórios do Sistema Cantareira (São Paulo): perspectiva ou realidade?
• Beneficiário: Marcelo Luiz Martins Pompêo
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/08272-0 - Descritores de trofia de uma série de reservatórios no Sistema Cantareira (São Paulo, SP)
• Beneficiário: Viviane Moschini Carlos
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/16420-6 - Caracterização ecotoxicológica do reservatório de Guarapiranga: estudo de possíveis efeitos adversos dos metais pesados, pesticidas e estressores ambientais sobre a fauna aquática
• Beneficiário: Julio César López Doval
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/03494-4 - As represas do Sistema Cantareira (São Paulo): a relação de organismos bentônicos bioindicadores e a contaminação por metais pesados
• Beneficiário: Frederico Guilherme de Souza Beghelli
• Linha de fomento: Bolsas no Brasil - Doutorado
• Processo FAPESP: 14/22581-8 - A Diretiva Quadro da Água da Comunidade Européia: aplicações à realidade dos reservatórios brasileiros
• Beneficiário: Marcelo Luiz Martins Pompêo
• Linha de fomento: Auxílio à Pesquisa - Regular