Polybrominated diphenyl ethers (PBDEs) effects on Chironomus sancticaroli larvae after short-term exposure

Palacio-Cortés, Angela María; Signorini-Souza, Isadora de Lourdes; Hara, Emerson Luis Yoshio; Disner, Geonildo Rodrigo; Rebechi, Débora; Grassi, Marco Tadeu; Cestari, Marta Margarete; Navarro-Silva, Mário Antônio

doi:10.1016/j.ecoenv.2017.01.052

Cited by 15 publications

(7 citation statements)

References 73 publications

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“…However, in our study the activity of GST was high in P. olivacea, inhabiting leaf packets, and was even higher than the maximum standard value reported for non-exposed C. riparius (Domingues et al 2007). Nevertheless, these values were not as high as those obtained by Palacio-Cortes et al (2017) in a study of C. sancticaroli; the detoxification of xenobiotics is presumably efficiently performed in this genus (Palacio-Cortes et al 2017). In contrast, red chironomid larvae, both of filtering Paratanytarsus sp.…”

Section: Anovacontrasting

confidence: 83%

A comparative study of the oxidative system in Chironomidae larvae with contrasting feeding strategies

Szczerkowska-Majchrzak

Jarosiewicz

2020

The European Zoological Journal

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The aim of the present work was to compare the oxidative system in the fourth-instar larvae of four species of Diptera belonging to the family Chironomidae: Chironomus riparius, Paratanytarsus sp., Prodiamesa olivacea and Conchapelopia melanops. These species were selected based on their ecological and biological differences and were assessed in relation to their ecological and biological characteristics. The following parameters of oxidative stress were determined: the levels of total antioxidant capacity (TAC) and reduced glutathione; the activity of the antioxidant enzyme catalase (CAT); the level of malondialdehyde (MDA), a product of lipid peroxidation; and glutathione S-transferase (GST) activity. Results demonstrated significant differences among taxa in the specific activity of most investigated parameters. Prodiamesa olivacea showed the greatest antioxidant protection (activity of CAT, level of reduced glutathione (GSH)) and the highest detoxification activities (activity of GST and level of GSH). Predatory C. melanops was shown to be the most promiscuous biomarker for assessing the total antioxidant activity. We demonstrate that the four chironomid taxa, occupying the same ecosystem, share an important antioxidant enzymatic and non-enzymatic pool, but with oxidative stress parameters differing among the four species.

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Section: Anovacontrasting

confidence: 83%

A comparative study of the oxidative system in Chironomidae larvae with contrasting feeding strategies

Szczerkowska-Majchrzak

Jarosiewicz

2020

The European Zoological Journal

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“…GST is a phase II biotransformation enzyme that can also be considered an antioxidant, acting in the process of metabolic detoxification (Frova 2006;Shi et al 2012;) and the induction of GST in larvae of Chironomus sancticaroli may indicate an initial detoxification process for cell protection (Palacio-Cortés et al 2017).…”

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%

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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“…These enzymes are involved in the metabolism and detoxification of toxic substances present in organisms (Boelsterli, 2007). It was demonstrated that BDE-17, -47 and -99 at concentrations ranging from 0.5 to 3 μg L -1 caused an increase of the glutathione S-transferase activity of the C. sancticaroli larvae (Palacio-Cortés et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Cell damage induced by polybrominated diphenyl ethers on Chironomus sancticaroli (Diptera: Chironomidae)

Signorini-Souza

Palacio-Cortés

Beltrão-Graboski

et al. 2020

Rev. Bras. entomol.

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Histological effects of polybrominated diphenyl ethers (PBDEs) were observed in Chironomus sancticaroli larvae which underwent acute exposure. 2,2′,4-triBDE (BDE-17), 2,2′,4,4′-tetraBDE (BDE-47) and 2,2′,4,4′,5-pentaBDE (BDE-99) were evaluated at 0.5, 2.0 and 20 μg L-1. Cytoplasm vacuolisation of oenocytes was observed in the larvae exposed to BDE-17 and BDE-47. Cuénot cells were disrupted at the brush border as an effect of the three evaluated congeners highlighting BDE-47 at 2.0 μg L-1 ; 60% of larvae displayed this disruption. The midgut showed changes in the morphology of apex cells located next to the lumen of region I exposed to BDE-17 and BDE-47, while BDE-99 induced a narrowing of the lumen diameter. Significant cytoplasm vacuolisation of the larvae exposed to BDE-47 and BDE-99 was observed in region II of the midgut. Salivary glands showed acidophilic granules in the cytoplasm exposed to BDE-17 and BDE-47. The results showed that the tissues of C. sancticaroli were sensitive to flame retardants; these histopathologies can compromise the health and physiology of this organism, highlighting the concern with the presence of PBDEs in freshwater sediments.

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Polybrominated diphenyl ethers (PBDEs) effects on Chironomus sancticaroli larvae after short-term exposure

Cited by 15 publications

References 73 publications

A comparative study of the oxidative system in Chironomidae larvae with contrasting feeding strategies

A comparative study of the oxidative system in Chironomidae larvae with contrasting feeding strategies

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

Cell damage induced by polybrominated diphenyl ethers on Chironomus sancticaroli (Diptera: Chironomidae)

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