Evaluation of water quality of an urban stream in southeastern Brazil using Chironomidae larvae (Insecta: Diptera)

Oliveira, Vívian Campos de; Martins, Renato Tavares; Alves, Roberto da Gama

doi:10.1590/s1519-566x2010000600004

Cited by 15 publications

(6 citation statements)

References 21 publications

(12 reference statements)

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“…Thus, high densities of representatives of this family may indicate high levels of organic matter in the environment, which make them effective indicators of environmental degradation (Barbola et al, 2011;Oliveira et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Integrated analysis of water quality from two rivers used for public supply in southern Brazil

et al. 2017

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Aim This study aimed to evaluate the water quality of streams that are used for public supply, through an integrated analysis using a biotic index, as well as physicochemical and microbiological parameters. Methods The data were obtained monthly, from November 2014 to April 2015, at eight locations in two rivers in the south of Brazil. The landscape is predominantly rural, with the occurrence of small reforested areas, as well as yerba mate and grape cultivations. Macroinvertebrate samples were collected monthly using a Surber sampler. Water temperature and dissolved oxygen concentration were measured in the field using a portable oximeter. The following parameters were measured in the laboratory: pH, Turbidity, BOD, Conductivity and Nitrate. Results The evaluation carried out in the rivers revealed good water quality, but some sample sites presented reduced water quality. The waters of the Leãozinho River were classified as doubtful at site 1 and as good at sites 2, 3 and 4. Ligeirinho River presented an acceptable rating at sites 1 and 4 and was classified as good at sites 2 and 3. The BMWP’ index was significantly correlated with the abundance of macroinvertebrates, EPT richness and BOD. The abundance and richness of macroinvertebrates in Leãozinho and Ligeirinho Rivers were associated with the physical, chemical and microbiological parameters. Conclusion This study reinforces the importance of biomonitoring in the evaluation of water quality for human consumption, considering that environmental management and monitoring practices should integrate physicochemical, microbiological and biological parameters.

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Section: Discussionmentioning

confidence: 99%

Integrated analysis of water quality from two rivers used for public supply in southern Brazil

et al. 2017

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“…As larvas de Chironomus (Chironomidae: Diptera) apresentaram maior abundância nos pontos "ETE" e "Jusante", que por sua vez demonstraram uma menor riqueza de táxons em relação aos pontos "Referência" e "Montante" (Tabela 2). A presença de alta densidade de larvas de Chironomus em ambientes aquáticos pode estar associada ao lançamento de efluentes domésticos, corroborando com os estudos de Machado et al (2015) e Oliveira et al (2010). Nossos resultados corroboram o potencial deste grupo taxonômico como indicador adequado na avaliação da qualidade da água em riachos tropicais.…”

Section: Figuraunclassified

“…Sendo assim, estudos têm sido desenvolvidos com macroinvertebrados para a avaliação de ambientes aquáticos no Brasil (Oliveira et al, 2010;Machado et al, 2015). Esses organismos podem acompanhar o gradiente de impacto antrópico, refletindo diversas relações físicas, químicas e biológicas com o meio, permitindo assim que eles sejam excelentes indicadores da integridade do ecossistema (Allan e Castilllo, 2007;Merrit et al, 2008).…”

Section: Introductionunclassified

“…Esses organismos podem acompanhar o gradiente de impacto antrópico, refletindo diversas relações físicas, químicas e biológicas com o meio, permitindo assim que eles sejam excelentes indicadores da integridade do ecossistema (Allan e Castilllo, 2007;Merrit et al, 2008). As larvas de Chironomus (Chironomidae: Diptera), por exemplo, são abundantemente encontradas em ambientes impactados por esgoto (Oliveira et al, 2010;Machado et al, 2015), sendo capazes de viver em ausência completa de oxigênio por horas, e são consideradas "coletoras" se alimentando principalmente de matéria orgânica (Merrit et al, 2008).…”

Section: Introductionunclassified

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Avaliação rápida da integridade ecológica em riachos urbanos na bacia do rio Corumbá no Centro-Oeste do Brasil

Cordeiro¹,

Guedes²,

Kisaka³

et al. 2016

Rev. ambiente água

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A urbanização tem ocasionado o lançamento de volumes significativos de efluentes domésticos parcialmente tratados nos corpos hídricos brasileiros causando diversos prejuízos ecológicos para estes ecossistemas. Para avaliar a integridade ecológica de riachos na região de Cerrado do Brasil Central foram selecionados quatro pontos de coleta, considerando o nível de influência antrópica ao qual estão submetidos. Foram analisados parâmetros físicos e químicos da água, o uso da paisagem e a comunidade de macroinvetebrados bentônicos. As coletas foram realizadas em julho de 2015 e foram mensuradas “in situ” as variáveis condutividade elétrica, temperatura da água, pH, oxigênio dissolvido, turbidez, largura e comprimento do riacho e velocidade da correnteza. Em seguida, foram coletadas amostras para o seston, perifíton, macroinvertebrados bentônicos e sedimento depositado. O ponto “Referência” apresentou menor abundância de larvas de Chironomus (Chironomidae: Diptera) e maior riqueza taxonômica, além de maior abundância dos grupos taxonômicos Ephemeroptera, Plecoptera e Trichoptera, mostrando ser o sistema mais íntegro dentre os analisados. A sub-bacia delimitada a partir desse ponto mostrou uma maior porcentagem de áreas com vegetação nativa (51%). Os pontos com presença de efluentes domésticos (“ETE” e “Jusante”) por sua vez, apresentaram valores mais elevados de condutividade elétrica, turbidez, maior abundância de larvas de Chironomus e menor riqueza de táxons, mostrando elevado impacto em função das atividades antrópicas. A avaliação rápida realizada com a composição da comunidade bentônica e as variáveis físicas e químicas da água foi suficiente na identificação das alterações na integridade ecológica causadas pela influência antrópica na bacia hidrográfica do rio Corumbá.

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“…Chironomus larvae can be found in sediments of many continental aquatic environments. The genus is usually recorded as a common and abundant taxon, especially in impaired ecosystems (Oliveira et al 2010;Machado et al 2015). Chironomus larvae are recommended as bioindicators in and in ecotoxicological assays (Di Veroli et al 2012, 2014.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2018

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The Cantareira Complex is one of the most important water supplies of the metropolitan region of São 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.

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Evaluation of water quality of an urban stream in southeastern Brazil using Chironomidae larvae (Insecta: Diptera)

Cited by 15 publications

References 21 publications

Integrated analysis of water quality from two rivers used for public supply in southern Brazil

Integrated analysis of water quality from two rivers used for public supply in southern Brazil

Avaliação rápida da integridade ecológica em riachos urbanos na bacia do rio Corumbá no Centro-Oeste do Brasil

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

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