Toxicological Response of Poecilia reticulata, Hyla species and Culex species to Leachates from Olusosun Landfill, Lagos State, Nigeria
Date
2018-05
Authors
Adetoro, F.A
Ikuabe, B.O
Lawal, R.A
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The effect of leachate samples from Olushosun dumpsite in Ojota, Lagos on the toxicological
response of Poecilia reticulata, Hyla and Culex species was investigated using acute and chronic toxicity tests.
Physicochemical parameters were analysed in the leachate prior to toxicological assessment against test animals.
Computed results showed that pH 7.62 while the acute toxicity assay of leachate sample against test animals revealed
a 96hr LC50 of 71.53ml/L, 58.34ml/L and 60.643ml/L for Poecilia, Hyla and Culex species respectively. On the basis
of the 96hr LC50 values, the leachate was found to be more toxic against Hyla than Poecilia. The exposure of the
Poecilia and Hyla species to sub-lethal concentrations (1/10th of 96hrs LC50) of leachate revealed varied biochemical
responses over a 28 day period. The activity of Catalase, Superoxide Dismutase (SOD), Malondialdehyde (MDA) and
Glutathione-S-Transferase (GST) showed significant increase (p<0.05) when compared to control in Hyla while the
activity of GSH, SOD and CAT showed significant increase (p<0.05) when compared to control in Poecilia sp. Results
from this study showed that leachate can induce adverse environmental effect on organisms. The acute and chronic
toxicological response of the test animals could be incorporated into risk assessment of dumpsite leachate, design and
management of landfill sites.
Description
Keywords
Research Subject Categories::NATURAL SCIENCES::Chemistry::Biochemistry , Leachates , Poecilia reticulata , Culex species , Malodialdehyde , Glutathione-S-Transferase
Citation
FA Adetoro, BO Ikuabe, RA Lawal Journal of Applied Sciences and Environmental Management 22 (5), 817-823