Metal Content and Oxidative Stress Enzymes in Aquatic Crab, Goniopsis cruentata (Latreille, 1802) from Tropical Creeks Adjacent Western Axis of the Lagos Lagoon

Rasheed O. Moruf1*, Musa I. Abubakar2, Amii I. Obiakara-Amaechi3, Isiyaku M. Sani1, Imekan I. Akpan4 
1Department of Fisheries and Aquaculture, Bayero University, Kano, Kano State, Nigeria
2Department of Aquaculture and Fisheries, University of Ilorin, Kwara State, Nigeria
3Department of Marine Sciences, University of Lagos, Akoka, Lagos State, Nigeria
4Department of Zoology, Akwa Ibom State University, Ikot Akpaden, Nigeria

Corresponding Author: [email protected]; Tel: +2348022429983
Recieved Date: 05 January 2021; Accepted Date: 30 January 2022; Published Date: 03 January
Citation: Moruf RO, Abubakar MI, Obiakara-Amaechi AI, Sani IM, Akpan II. Metal Content and Oxidative Stress Enzymes in Aquatic Crab, Goniopsis cruentata (Latreille, 1802) from Tropical Creeks adjacent Western Axis of the Lagos Lagoon. Trop J Nat Prod Res. 2022; 6(1):161-166
© 2022 Moruf et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Heavy metal analysis and biomarker assessment when combined, can offer more robust and biologically relevant information on the impact of pollutants on organism health. The study evaluated oxidative stress responses in the mangrove crab, Goniopsis cruentata inhabiting contaminated locations on nearshore wetland ecosystems adjacent the western axis of the Lagos Lagoon. Heavy metal analysis was done using Atomic Absorption Spectrophotometer while antioxidant enzymes were isolated from the crab tissue by homogenization and centrifugation. Serial dilutions of the crude enzymes were then assayed for residual enzymatic activities using standard enzyme assay protocol. On the average, all the examined heavy metals (nickel, copper, chromium, lead and zinc) exhibited low contamination factor (CF), as their individual values were less than one (1). Relatively, higher CF values were however observed for copper in crabs from Abule-Agege and Abule-Eledu Creeks, suggesting the potential for elevated concentrations in sediment. Nickel was observed to be the most accumulated metal in tissues of G. cruentata across creeks. With the exception of superoxide dismutase (SOD) and catalase (CAT), strong positive correlations (P < 0.05) were observed between the antioxidant enzyme activities and the heavy metals (nickel, copper, chromium, lead and zinc) across creeks. Presence of heavy metals showed inhibitory effect on SOD and CAT activities, indicating an increasing level of environmental stressors in the area.

Keywords: Biomarkers, Ecological Risk Assessment, Heavy metals, Mangrove Crab.
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ISSN: 2616-0684 (Print)
ISSN: 2616-0692 (Online)
DOI: 10.26538/tjnpr
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