Evaluating Polyaromatic Hydrocarbons (PAHs) Toxicity in Terrestrial Ecosystems Using Enzymatic Biomarkers in Achatina Fulica

Perfect Donga
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Perfect Donga: Applied Biology and Biochemistry, National University of Science and Technology, Bulawayo, Zimbabwe

International Journal of Research and Innovation in Applied Science, 2025, vol. 10, issue 7, 1449-1460

Abstract: Polyaromatic hydrocarbons (PAHs) have been linked to various human activities such as cooking, domestic heating, and the use of fuel for operating automobiles, resulting in common background levels of PAHs in soils. Although much has been revealed about the effects of PAHs on aquatic organisms, comparatively little is known about their impact on terrestrial organisms. This study investigates response of the model antioxidant, phase II and carbohydrate enzymes to stress induced by benzo(a)pyrene + pyrene and PAH associated pollution using the land snail Achatina fulica. The snails were exposed in triplicates to soil spiked with benzo(a)pyrene+pyrene and naturally polluted soil for a maximum of 21 days, with sampling conducted on days 1, 11, and 21 of exposure. Specific activities were significantly elevated with increase in exposure as revealed by RM Two-way ANOVA at 95% confidence level with the Giesser-Greenhouse correlation for superoxide dismutase (P

Date: 2025
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