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Vol.6 , No. 2, Publication Date: Apr. 25, 2019, Page: 25-32
 of the Lagos Lagoon&description=The bioaccumulation of Cu, Fe, Ni, Zn, V and Pb from the oily drill cuttings by the mangrove littoral periwinkles <i>T. fuscatus</i> of the Lagos Lagoon was evaluated in the laboratory. 450 specimens of <i>T. fuscatus</i> were collected from the edge of the Lagos lagoon and adjacent mangrove swamp at low tide, put in different holding tanks (113cm x 54cm × 80cm), half filled with lagoon water and aerated with a 220v air pump. Drill cuttings used were collected in two 20 litres plastic bucket from the main discharge point at the Shell Development Petroleum Corporation. Atomic absorption spectrometer technique was used for the heavy metal analysis. The exposure of these animals to sublethal concentration (1/100<sup>th</sup> and 1/10<sup>th</sup> of 96EC<sub>50</sub>) of drill cuttings showed that the animals bioaccumulated varying degrees of metals. Post treatment analysis of whole body tissues of these animals revealed that the organisms accumulated higher amount of metals than the residual levels in the untreated control media. The level of heavy metal, accumulation is positively correlated with the concentration of drill cuttings in the test media and the duration of exposure. <i>T. fuscatus</i> exposed to 1.024ml/L drill cuttings for 32 days have 0.056mg/g, 2.91mg/kg, 0.15mg/kg, 1.27mg/kg and 0.004mg/kg overall net gain of Cu, Fe, Ni, Zn, V and Pb respectively. Organisms exposed to 10.024ml/L of drill cuttings have 0.046mg/kg, 2.98mg/kg, 0.025mg/kg, 1.5mg/g, 0.007mg/kg and 0.008mg/kg overall net gain of Cu, Fe, Ni, Zn, V and Pb respectively. Comparisons between the concentration of metals in the body tissues of the animals and sediment showed that the concentration of metals accumulated by these animals were lower than that in the sediment. The significance of this result is the need to include bioaccumulators of heavy metals such as <i>T. fuscatus</i> in monitoring programmes aimed at establishing the environmental levels of such pollutant as drill cuttings in aquatic ecosystems.&picture=http://www.aascit.org/aascit/decorators/img/journal/892.jpg)
| [1] | Igwegbe Adline Nkechi, Department of Fisheries Resources, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria. |
| [2] | Okonkwo Cleopatra Ebere, Department of Fisheries Resources, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria. |
| [3] | Yusuf Waheed Abiodun, Department of Fisheries Resources, Nigerian Institute for Oceanography and Marine Research, Lagos, Nigeria. |
The bioaccumulation of Cu, Fe, Ni, Zn, V and Pb from the oily drill cuttings by the mangrove littoral periwinkles T. fuscatus of the Lagos Lagoon was evaluated in the laboratory. 450 specimens of T. fuscatus were collected from the edge of the Lagos lagoon and adjacent mangrove swamp at low tide, put in different holding tanks (113cm x 54cm × 80cm), half filled with lagoon water and aerated with a 220v air pump. Drill cuttings used were collected in two 20 litres plastic bucket from the main discharge point at the Shell Development Petroleum Corporation. Atomic absorption spectrometer technique was used for the heavy metal analysis. The exposure of these animals to sublethal concentration (1/100th and 1/10th of 96EC50) of drill cuttings showed that the animals bioaccumulated varying degrees of metals. Post treatment analysis of whole body tissues of these animals revealed that the organisms accumulated higher amount of metals than the residual levels in the untreated control media. The level of heavy metal, accumulation is positively correlated with the concentration of drill cuttings in the test media and the duration of exposure. T. fuscatus exposed to 1.024ml/L drill cuttings for 32 days have 0.056mg/g, 2.91mg/kg, 0.15mg/kg, 1.27mg/kg and 0.004mg/kg overall net gain of Cu, Fe, Ni, Zn, V and Pb respectively. Organisms exposed to 10.024ml/L of drill cuttings have 0.046mg/kg, 2.98mg/kg, 0.025mg/kg, 1.5mg/g, 0.007mg/kg and 0.008mg/kg overall net gain of Cu, Fe, Ni, Zn, V and Pb respectively. Comparisons between the concentration of metals in the body tissues of the animals and sediment showed that the concentration of metals accumulated by these animals were lower than that in the sediment. The significance of this result is the need to include bioaccumulators of heavy metals such as T. fuscatus in monitoring programmes aimed at establishing the environmental levels of such pollutant as drill cuttings in aquatic ecosystems.
Keywords
Bioaccumulation, Mangrove Littoral Periwinkles, Oily Drill Cuttings, Lagos Lagoon
Reference
| [01] | Abiaobo N. O., Akpan I. I., and Umana S. I. (2017). Assessment of Heavy Metals concentration in Shell andFin fish from Ikot River Estuary, South East Nigeria. JAERI 12 (4); 1-8. |
| [02] | Aigberua O. A and Izah S. C. (2018). Evalation of heavy metals in tissue of Tympanotous fuscatus sold in market in port Harcourt metropolis, Nigeria. MOJ. Toxicol. 4 (5): 334-338. |
| [03] | Bhalerao, B. N. and Adeeko, A. B. (1981). Pollution Survey of Some Textile Mills in Lagos State. In: Proceedings, Federal Ministry. |
| [04] | Bryan, G. W. and Gibbs, P. E. (1987). Polychaetes as indicators of heavy metal availability in marine deposits. Oceanic processes in Marine pollution, Biological processes and wastes in the ocean, vol. 1 (ed. J. M. Capuzzo and D. R. Kester). Melbourne, FI, USA. Krieger Publishing Co. 37-49 pp. |
| [05] | Chukwu, L. O. (1991). Studies on heavy metal contamination of water, sediment and decapod crustaceans (Family palaemonidae) from River Sasa. Ph.D Thesis. University of Lagos. 164 pp. |
| [06] | Clark, R. B. (1992). Marine Pollution. 3 rd Edition, Oxford University Press. 161 pp. |
| [07] | Fodeke, V. A. (1979). Studies on heavy metals and microbial contamination of Tilapia sp. in Lagos lagoon (M.Sc. Thesis). University of Lagos, Nigeria. |
| [08] | Kinigoma, B. S. (2001). Effects of drill fluid additives on the Niger Delta Environment: A case study of the Soku Oil Fielda. J. Appl. Sci. Environn. Mgt. 5 (1): 57-61. |
| [09] | Momoh, A. E. (1995). Bioaccumulation of lead by Clibanariusafricanus (Aurivillus) exposed to sublethal concentration of spent engine oil. M.Sc. Thesis. University of Lagos. 22 pp. |
| [10] | Moslen, M., Ekweozor, I. K. and Nwoka, N. D. (2017). Assesment of Heavy Metals and Bioaccumulation in Periwinkles (Tympanotonusfuscatus Var. radula) (L) obtained from the Upper Bonny Estuary, Nigeria. J. Heavy Met. Toxicity Dis. Vol 2 No. 2: 3. |
| [11] | Neff, J. M (1987). Biological effects of drilling fluids, drill cuttings and produced waters. In: Boesch, D. F. and Rabalaise, N. N (Eds). Long term effects of offshore oil and gas development Elsevie Applied Sciences Publishers, London, 469-538 pp. |
| [12] | Nwakanma, C. and Hart, A. I. (2013). The influence of oil based mud exposure on the uptake of heavy metals and total hydrocarbon in P. barbarusof soft muscle tissues. Int. J. Fish. andAquat. Sci. 2 (3): 43-45. |
| [13] | Obasohan, E. E. and Orosanye, J. A. O. (2000). Heavy metals in water, sediments and some important fish species from Ikpoba River, Benin City, Nigeria. J. Appl. Sci. Environ. Mgt, 4 (2): 63-68. |
| [14] | Okoye, B. C. O. (1989). A study of some heavy metals in Lagos lagoon (Ph.D Thesis). Obafemi Awolowo University, Ile-Ife. 142 pp. |
| [15] | Otitoloju, A. A and Don-Pedro, K. N. (2002). Establishment of the toxicity ranking of order of heavy metals and sensitivity scale of benthic animals inhibiting the Lagos lagoon. West African Journal of Applied Ecology. 3: 31-41. |
| [16] | Oyewo, E. O. (1998). Industrial sources and distribution of heavy metals in Lagos lagoon and their biological effects on estuarine animals. Ph.D Thesis. University of Lagos. 274 p. |
| [17] | Ozoh, P. T. E. (1980). Effects of reversible incubations of zebra fish eggs in Copper and Mercury ions with or without shell membrances. Bull. Enviro. Contam. Toxicol. 21: 782-786. Production and Exploitation Association Limited (APPEA) (1998). Framework for the environmental management of drillfluids on cuttings. APPEA Issue Paper, March, 1998. |
| [18] | Weis, P., Weis, J. S. and Couch, J. (1993). Histopathology and bioacummulation in oysters, Grassostreavirginica living in wood preserved with chlorinated copper assernate. Diseases of Aquatic Organisms. 17: 41-46. |
