Metabolic enzyme profile, behavioural changes and morphophysiological parameters of African catfish Clarias gariepinus juveniles in response to burnt waste tyres

Audu, B. S.; Ajima, M. N. O.

doi:10.1007/s00580-020-03132-w

Cited by 8 publications

(1 citation statement)

References 30 publications

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“…Sani et al (2020) reported that some fish exposed to toxicants cause some forms of abnormalities such as irregularly shaped hepatocytes, cytoplasmic vacuolation, and nuclei positioned laterally revealing evidence of cytoplasmic, nuclear vacuolation, nuclear degeneration, and focal necrosis in the fish livers. These changes, which have been described as being more severe, are typically connected to the fish's exposure to higher concentrations of toxins (Audu et al, 2020;Flores-Lopes et al, 2020). The contaminant effect of xylene also affected the proper function of the liver and its optimal metabolic capacity (Vijayakumar et al, 2017).…”

Section: Histopathological Changes In the Livermentioning

confidence: 99%

Quantal Response and Histopathological Effects of Sub-lethal Concentrations of a Selected Oilfield Chemical on African Catfish (Clarias gariepinus)

Davies¹,

Oghenetekevwe²,

Amaewhule³

2022

JBGR

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The behavioural and histological effects of sublethal concentrations (0.0 ml/L, 12.8 ml/L, 25.59 ml/L, 38.39 ml/L, 51.19 ml/L, and 63.99 ml/L) of Xylene were evaluated in African Catfish (Clarias gariepinus) after 28 days of exposure. Physico-chemical parameters such as temperature, conductivity, hydrogen ion concentration (pH), total hardness, total dissolved solids, dissolved oxygen, total alkalinity, ammonia, and nitrate levels in the experiment were monitored using the standard method. Significant variations were observed in the different units except for the controlled unit. Behavioural changes were observed closely during the sublethal toxicity test using standard procedures. The bioassay experiments were repeated three times and the renewable test method was used. concentrations showed histopathological alterations in the gills and liver. Severely deformations were observed at 12.80ml/l, 38.39ml/l), 51.19ml/l, and 63.99ml/l. No form of abnormalities was observed in the fish gill and liver in the controlled unit. Progressive hyperventilation, faster operculum and tail beat movement, erratic movement, gulping of air, and spiralling. jumping, display of vigorous jerky movement suffocation, and loss of reflex were observed in C. gariepinus exposed to higher sublethal concentrations of Xylene. There was a significant dose-dependent variation in parameters in the experiment. In conclusion, xylene caused an alteration in the histopathological parameters and the behaviour of C. garienpinus. Therefore, we recommend the need for realistic regulatory measures and proper monitoring and sensitization on use to stakeholders.

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Section: Histopathological Changes In the Livermentioning

confidence: 99%

Quantal Response and Histopathological Effects of Sub-lethal Concentrations of a Selected Oilfield Chemical on African Catfish (Clarias gariepinus)

Davies¹,

Oghenetekevwe²,

Amaewhule³

2022

JBGR

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Genotoxicity, oxidative stress and lysozyme induction in Clarias gariepinus chronically exposed to water-soluble fraction of burnt tire ash

Iheanacho

Adeolu²,

Nwose³

et al. 2021

Ecotoxicology

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Acute toxicity of rich triethylene glycol on juvenile African freshwater catfish (Clarias gariepinus) around a natural gas dehydration facility

Aimikhe,

Lazarus,

Davies

2024

Discov Environ

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Triethylene glycol (TEG) removes equilibrium water from natural gas but may spill during equipment maintenance and other poor safety practices. Studies on the toxicity of rich TEG in aquatic habitats are scarce. In this study, the toxicity of rich TEG on freshwater juvenile African catfish (Clarias gariepinus) test organism was conducted. The experimental design for the toxicity tests was 3 × 5 × 6 factor in a randomized complete block design, with six levels of treatment, observed at five intervals and in three replicates. The acute toxicity was carried out by exposing them to various lethal concentrations of the Rich TEG in solution. Physicochemical parameters, including temperature, dissolved oxygen, pH, conductivity, and total dissolved solids, were measured and recorded for five test concentrations of 25.92, 12.96, 6.48, 3.24, 1.62, and 0.0 ml/l (control). The concentration responses for the fish mortality at 24, 48, 72, and 96 h were also derived. No mortality was observed between Rich TEG concentrations of 0 ml/l to 25.92 ml/l after 72 h of exposure. However, some mortality was observed between 1.62 ml/l to 25.92 ml/l after 96 h of exposure. The highest concentration of 25.92 ml/l recorded a higher mortality of 6.0 ± 0.4, which is an average of 60%, while the lowest mortality was recorded in the control (0 ml/l), at an average of 0% mortality rate. The results underscore the concentration-dependent effects of rich TEG on the test organism, highlighting the need for targeted attention to higher concentration levels.

show abstract

Metabolic enzyme profile, behavioural changes and morphophysiological parameters of African catfish Clarias gariepinus juveniles in response to burnt waste tyres

Cited by 8 publications

References 30 publications

Quantal Response and Histopathological Effects of Sub-lethal Concentrations of a Selected Oilfield Chemical on African Catfish (Clarias gariepinus)

Quantal Response and Histopathological Effects of Sub-lethal Concentrations of a Selected Oilfield Chemical on African Catfish (Clarias gariepinus)

Genotoxicity, oxidative stress and lysozyme induction in Clarias gariepinus chronically exposed to water-soluble fraction of burnt tire ash

Acute toxicity of rich triethylene glycol on juvenile African freshwater catfish (Clarias gariepinus) around a natural gas dehydration facility

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