BIO-ACCUMULATION OF HEAVY METALS AND ASSESSMENT OF HUMAN HEALTH RISKS ASSOCIATED WITH THE CONSUMPTION OF CALLINECTES AMNICOLA AND PENAEUS MONODON FROM ESCRAVOS ESTUARY, DELTA STATE, NIGERIA
DOI:
https://doi.org/10.5281/zenodo.18950826Keywords:
Bioaccumulation, Hazard index, Sediment, Fish diversityAbstract
This study examined Ni and Pb concentrations in sediment, Callinectes amnicola, and Penaeus monodon from Escravos Estuary (EE), Delta State, Nigeria. The estuary was divided into three stations (X, Y, Z) based on fish landing sites, while seasonal sampling was dry (January to March) and wet (April to June) seasons in 2025. Sediment, C. amnicola, and P. monodon were collected for six months and analyzed for nickel, lead, and health risk indices—Target Hazard Quotient (THQ), and Hazard Index (HI)—using standard procedures. Data were subjected to descriptive and inferential statistics at 5% significance. Results revealed significant spatial and seasonal concentrations of nickel in sediments, which peaked at station Y (0.06±0.02 mg/kg) and were lowest at X (0.03±0.02 mg/kg). In contrast, seasonal values ranged from 0.03±0.02 to 0.05±0.01 mg/kg. Lead was highest at X (0.04±0.02 mg/kg) and lowest at Y (0.04±0.01 mg/kg), with seasonal values 0.02±0.01–0.03±0.01 mg/kg. In C. amnicola, Ni-THQ was 0.0758, HI 0.6754, while P. monodon showed Ni-THQ 0.0249, HI 0.6710. Rising Ni and Pb levels, alongside elevated risk indices, indicate threats to species abundance and human consumers. Regular monitoring of EE is recommended for sustainable fisheries and public health protection.
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Adeyemi, S. O., Ogunjobi, A. A., and Abiodun, O. A. (2019). Bioaccumulation of heavy metals in fish species from Ogun River, Nigeria. Journal of Environmental Chemistry and Ecotoxicology, 11(1): 1–7. https://doi.org/10.5897/JECE2018.0455
Aghoghovwia, O. A., Ohimain, E. I., and Izah, S. C. (2016). Bioaccumulation of heavy metals in different tissues of some commercially important fish species from Warri River, Niger Delta, Nigeria. Biotechnological Research, 2(1), 25-32.
Ajani, E.K., and Balogun, K.J. (2015). Variability in levels of heavy metals in water and fish 496 (Chrysichthys nigrodigitatus) tissues from Badagry Creek, Nigeria. Journal of Biology and Life Science. 6(2):193-207. http://dx.doi.org/10.5296/jbls.v6i2.7602
Alahabadi, A., and Malvandi, H. (2018). Contamination and ecological risk assessment of heavy metals and metalloids in surface sediments of the Tajan River, Iran. Marine Pollution Bulletin, 133: 741-749.
Ali, H., Khan, E., and Ilahi, I. (2019). Environmental chemistry and ecotoxicology of hazardous heavy metals: Environmental persistence, toxicity, and bioaccumulation. Journal of Chemistry, 2019, 1-14.
AOAC. (1990). Official Methods of Analysis. 15th Edition, Association of Official Analytical Chemist, Washington DC.
APHA (1992). Standard Methods for the Examination of Water and Waste Water. America Public Health Association, American Water Works Association, Water Environment Federation. Greenberg, A.E., Clesceri, L.S. and A.D. Eaton Eds. 18th Edition, Washington, D.C. 238 - 410.
Authman, M. M., Zaki, M. S., Khallaf, E. A., and Abbas, H. H. (2015). Use of fish as bio-indicator of the effects of heavy metals pollution. Journal of Aquaculture Research & Development, 6(4): 1-13.
Asuquo, P. E., Ekanem, A. P., & Ifon, H. T. (2012). Levels of some heavy metals in tissues of crustaceans (Callinectes amnicola and Macrobrachium vollenhovenii) from a tropical ecosystem in Nigeria. Institute of Oceanography, University of Calabar.
Ekperusi, A. O., Michael, A., Chukwurah, C. H., and Sunday, N. M. (2024). Evaluation of heavy metals and their potential risk to human health from seafood in Escravos Estuary, Southern Nigeria. Marine Pollution Bulletin, 208, 117014.
Ewutanure, S. J., and Asogwa, V. I. (2024). Histopathological analyses of liver and gill of Coptodon zillii obtained from Okerenkoko Waterfront, Delta State, Nigeria. Animal Research International, 21(1): 5249-5256.
Ewutanure, S. J., and Binyotubo, T. E. (2021). Impacts of anthropogenic activities on the fish compositions and diversity of Okerenkoko Estuarine, Delta State, Nigeria. In Proceedings of the Accra Bespoke Multidisciplinary Innovations Conference. University of Ghana/Academic City University College, Accra, Ghana (pp. 9-22).
Ewutanure, S. J., Eyo, V. O., Binyotubo, E. T., and Eriegha, O. J. (2022). Heavy metal and total petroleum hydrocarbon concentrations in water, sediment and fauna of Okerenkoko Estuarine, Delta State, Nigeria. Journal of Digital Innovations and Contemporary Research in Science Engineering and Technology, 10(2), 1-12.
Ewutanure, S.J. and Olaifa, F.E. (2021). Effects of effluents from Gbalegbe River, Delta State, Nigeria on the breeding performance of Clarias gariepinus (Burchell, 1822). Proceedings of the Accra Bespoke Multidisciplinary Innovations Conference. University of Ghana Academic Citv University College, Accra, Ghana. December 2021. Pp. 163-178
FEPA, (2011). National Environmental (Surface and ground water quality control) regulations. Printed and Published by The Federal Government Printer, Lagos, Nigeria jFGP 71/72011MOO (OL 46). 35Pp.
Fishbase (2024). Scopimera inflata. FishBase.https://www. fishbase.se/summary/1390 Accessed September 21, 2024.
Gupta, P. K. (2001). Methods in environmental analysis: Water; Soil and Air. AGROBIOS (India) Publisher. 1 - 408.
Ihedioha, J. N., Ukoha, P. O., and Ekere, N. R. (2017). Ecological and human health risk assessment of heavy metal contamination in soil of a municipal solid waste dump in Uyo, Nigeria. Environmental geochemistry and health, 39, 497-515.
Iwegbue, C. M., Oshenyen, V. E., Tesi, G. O., Olisah, C., Nwajei, G. E., and Martincigh, B. S. (2022). Occurrence and spatial characteristics of polychlorinated biphenyls (PCBs) in sediments from rivers in the western Niger delta of Nigeria impacted by urban and industrial activities. Chemosphere, 291, 132671.
Jaishankar, M., Tseten, T., Anbalagan, N., Mathew, B. B., and Beeregowda, K. N. (2014). Toxicity, mechanism, and health effects of some heavy metals. Interdisciplinary Toxicology, 7(2): 60-72.
Jolaosho, T. L., Elegbede, I. O., Ndimele, P. E., Falebita, T. E., Abolaji, O. Y., Oladipupo, I. O., and Isaac, O. O. (2024). Occurrence, distribution, source apportionment, ecological and health risk assessment of heavy metals in water, sediment, fish and prawn from Ojo River in Lagos, Nigeria. Environmental Monitoring and Assessment, 196 (2): 109.
Lawal-Are, A. O., Mokwenye, C. R., & Akinwunmi, M. F. (2017). Heavy metal bioaccumulation in Callinectes amnicola and Farfantepenaeus notialis from three selected tropical water bodies in Lagos, Nigeria. Ife Journal of Science, 19(2), 201–210.
Li, J., Miao, X., Hao, Y., Xie, Z., Zou, S., and Zhou, C. (2020). Health risk assessment of metals (Cu, Pb, Zn, Cr, Cd, As, Hg, Se) in angling fish with different lengths collected from Liuzhou, China. International Journal of Environmental Research and Public Health, 17(7): 2192.
Liu, B., Xu, M., Wang, J., Wang, Z., and Zhao, L. (2021). Ecological risk assessment and heavy metal contamination in the surface sediments of Haizhou Bay, China. Marine Pollution Bulletin, 163, 111954.
Obayemi, O. E., Ayoade, M. A. and Komolafe, O. O. (2023). Health risk assessment of heavy metals in Coptodon zillii and Parachanna obscura from a tropical reservoir. Heliyon 30:9(6) 1-13
Oladeji, A.A., Olarewaju, A. A., Iyabode, C.A., Madu, I. E. and Ahmad, S.R (2024). Impact of Sediment and Water Heavy Metal Concentrations on Fish Bioaccumulation in Hadejia River, Nigeria. Book of Proceedings, 14th Nigeria Association of Hydrological Sciences Conference (Okitipupa 2024) held at Olusegun Agagu University of Science and Technology, Okitipupa, Ondo State, Nigeria, November 5 - 8, 2024
Olmedo, P., Pla, A., Hernández, A. F., Barbier, F., Ayouni, L., and Gil, F. (2013). Determination of toxic elements (mercury, cadmium, lead, tin and arsenic) in fish and shellfish samples. Risk assessment for the consumers. Environment international, 59: 63-72.
Osuagwu, E. S., and Olaifa, E. (2018). Effects of oil spills on fish production in the Niger Delta. PLoS ONE, 13(10), e0205114. https://doi.org/10.1371/journal.pone.0205114
Singh, G., and Sharma, S. (2024). Heavy metal contamination in fish: sources, mechanisms and consequences. Aquatic Sciences, 86(4), 107.
Tchounwou, P. B., Yedjou, C. G., Patlolla, A. K., and Sutton, D. J. (2012). Heavy metal toxicity and the environment. EXS, 101, 133-164.
Ullah, S., Li, Z., Hassan, S., Ahmad, S., Guo, X., Wanghe, K., and Nabi, G. (2021). Heavy metals bioaccumulation and subsequent multiple biomarkers based appraisal of toxicity in the critically endangered Tor putitora. Ecotoxicology and Environmental Safety, 228, 113032
USEPA. (2010). Integrated Risk Information System (IRIS); United States Environmental Protection Agency: Washington, DC, USA. Available online: http://www.epa.gov/ncea/iris/index.html (accessed on 15 August 2020).
Wuana, R. A., and Okieimen, F. E. (2011). Heavy metals in contaminated soils: A review of sources, chemistry, risks, and best available strategies for remediation. ISRN Ecology, 2011, 1-20.
Yi, Y., Tang, C., Yi, T., Yang, Z. and Zhang, S. (2017). Health risk assessment of heavy metals in fish and accumulation patterns in food web in the upper Yangtze River, China. Ecotoxicology and Environmental Safety, 145: 295-302.
Yilmaz, F., Ozdemir, N., Demirak, A., and Tuna, A. L. (2007). Heavy metal levels in two fish species Leuciscus cephalus and Lepomis gibbosus. Food Chemistry, 100(2), 830-835.
Yuan, Y., Sun, T., Wang, H., Liu, Y., Pan, Y., Xie, Y., and Fan, Z. (2020). Bioaccumulation and health risk assessment of heavy metals to bivalve species in Daya Bay (South China Sea): Consumption advisory. Marine pollution bulletin, 150, 110717.
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