Factors that alter the biochemical biomarkers of environmental contamination in Chironomus sancticaroli (Diptera, Chironomidae)

Rebechi-Baggio, D; Richardi, Vinícius Sobrinho; Vicentini, Maiara; Guiloski, Izonete Cristina; Assis, Helena C. Silva de; Navarro-Silva, Mário Antônio

doi:10.1016/j.rbe.2016.07.002

Cited by 9 publications

(2 citation statements)

References 37 publications

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“…Variations of temperature and food supply in bioassays with Chironomus sancticaroli and Chironomus riparius have been found to affect the activities of the enzymes AChE, EST-α, EST-β, and GST, with each enzyme having an optimal activity temperature (Callaghan et al 2002;Rebechi-Baggio et al 2016). The temperature and food supply were therefore kept constant, in order to ensure that the biochemical changes were not related to these factors.…”

Section: Discussionmentioning

confidence: 99%

“…In the Neotropical region it is possible to use of the aquatic insect Chironomus sancticaroli Strixino and Strixino 1981 to evaluate the toxic effects of nanopesticides in nontarget organisms, since this species has provided excellent results in ecotoxicology bioassays, including the evaluation of biochemical biomarkers, DNA strand damage, histology, mortality, development rate and mentum deformities (Beghelli et al 2018;Dornfeld et al 2006;Dornfeld et al 2019;Janke et al 2011;Moreira-Santos et al 2005;Novelli et al 2012;Palacio-Cortés et al 2017;Printes et al 2007Printes et al , 2011Rebechi et al 2014;Rebechi-Baggio et al 2016;Richardi et al 2018;Santos et al 2007;Silvério et al 2005;Sotero-Santos et al 2007;Vicentini et al 2017). Therefore, Chironomus sancticaroli it is considered a good bioindicator of sediment pollution in South America (Beghelli et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Use of nontarget organism Chironomus sancticaroli to study the toxic effects of nanoatrazine

et al. 2021

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Atrazine was banned by the European Union in 2004, but is still used in many countries. Agricultural research employing nanotechnology has been developed in order to reduce the impacts to the environment and nontarget organisms. Nanoatrazine was developed as a carrier system and have been considered efficient in weed control. However, its toxicity must be verified with nontarget organisms. In this context, the aim of the present study was to investigate ecotoxicological effects of solid lipid nanoparticles (empty and loaded with atrazine) and atrazine on Chironomus sancticaroli larvae, evaluating the endpoints: mortality, mentum deformity, development rate and biochemical biomarkers. The contaminant concentrations used were 2, 470, 950, and 1900 μg L −1 in acute (96 h) and 2 μg L −1 in subchronic (10 days) bioassays. An environmentally relevant concentration of atrazine (2 μg L −1 ) presented toxic and lethal effects towards the larvae. The nanoparticles loaded with atrazine showed toxic effects similar to free atrazine, causing mortality and biochemical alterations on the larvae. The nanoparticle without atrazine caused biochemical alterations and mortality, indicating a possible toxic effect of the formulation on the larvae. In the acute bioassay, most concentrations of nanoparticles loaded with atrazine were not dose dependent for the endpoint mortality. Only the atrazine concentration of 470 μg L −1 was statistically significant to endpoint mentum deformity. The atrazine and nanoparticles (with and without atrazine) did not affect larval development.The results indicate that Chironomus sancticaroli was sensitive to monitor nanoatrazine, presenting potential to be used in studies of toxicity of nanopesticides.

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Section: Discussionmentioning

confidence: 99%