Histological Alterations in Common Carp (Cyprinus carpio Linnaeus, 1758) Gills as Potential Biomarkers for Fungicide Contamination

Stoyanova, Stela; Yancheva, Vesela; Velcheva, Iliana; Uchikova, E; Georgieva, Еlenka

doi:10.1590/s1516-89132015050151

Cited by 9 publications

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References 39 publications

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“…The common carp is also a bottom-dwelling species, and is hence likely to be directly exposed to toxicants via the sediment or through the consumption of contaminated benthic invertebrates [46]. However, it is relatively resilient to water pollution, which is another important characteristic of bioindicator organisms in aquatic toxicology [38,[47][48][49][50].…”

Section: Test Speciesmentioning

confidence: 99%

“…The common carp is also a bottomdwelling species, and is hence likely to be directly exposed to toxicants via the sediment or through the consumption of contaminated benthic invertebrates [46]. However, it is relatively resilient to water pollution, which is another important characteristic of bioindicator organisms in aquatic toxicology [38,[47][48][49][50]. The experimental setup was similar to that of the CPF experiment, which was described by Stoyanova et al [39], but in the present study, we chose to test the MAC-EQC (100%, 0.1 μg/L) set in Directive 2013/39/EU, which was done for the very first time.…”

Section: Test Speciesmentioning

confidence: 99%

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Which Is More Toxic? Evaluation of the Short-Term Toxic Effects of Chlorpyrifos and Cypermethrin on Selected Biomarkers in Common Carp (Cyprinus carpio, Linnaeus 1758)

Georgieva

Yancheva

Stoyanova

et al. 2021

Toxics

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The general aim of this study was to investigate the negative short-term effects of different concentrations of chlorpyrifos (CPF) and cypermethrin (CYP), based on the EU legislation (MAC-EQS) in common carp (Cyprinus carpio Linnaeus, 1758) under laboratory conditions and to compare their toxicity. The fish were exposed to the pesticides for 96 h and then different histological and biochemical biomarkers were investigated in the gills and liver, and bioaccumulation analyses were conducted. The chemical studies showed increased pesticide concentrations in the gills as the first site for pollutants compared to the liver at the 96th hour. In addition, the histological analyses showed severe alterations in the gills and liver after exposure to both tested pesticides. In the gills, we found mainly intense proliferative and, to a lesser extent, degenerative changes and alterations in the circulatory system, such as necrosis and vasodilation. In the liver, regressive and progressive lesions, as well as circulatory disturbances and inflammation, were observed. The regressive lesions showed a higher degree of expression compared to the other changes. Furthermore, we found altered enzymatic activities—catalase, glutathione reductase, and glutathione peroxidase—in the liver, compared to the control. Overall, both tested pesticides impacted the studied biomarkers in common carp, even at concentrations lower than those permitted by law. However, the results of the comparative analysis showed a relatively higher toxicity of CYP compared to CPF in the fish. Still, questions persist as to whether the observed changes are adaptive or entirely destructive. To avoid any danger or risk, these pesticides must be applied cautiously, especially near water bodies.

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