Impacts of acute exposure of industrial chemicals and pesticides on the survival of fish (Tilapia guineensis) and earthworms (Aporrectodea longa)

  • Doris F. Ogeleka Department of Chemistry, Federal University of Petroleum Resources, Effurun, Delta State, Nigeria.
  • Emmanuel T. Ogbomida | Ogbomida.e@ncee.org.ng Ecotoxicology and Environmental Forensics Unit, National Centre for Energy and Environment, Energy Commission of Nigeria, University of Benin, Benin City, Nigeria.
  • Isioma Tongo Department of Animal and Environmental Biology (AEB), Faculty of Life Sciences, University of Benin, Benin City, Edo State, Nigeria.
  • Alex A. Enuneku Department of Animal and Environmental Biology (AEB), Faculty of Life Sciences, University of Benin, Benin City, Edo State, Nigeria.
  • Thomas O. Ikpesu Department of Environmental Sciences, Federal University, Otuoke, Bayelsa State, Nigeria.
  • Lawrence I.N. Ezemonye Department of Animal and Environmental Biology (AEB), Faculty of Life Sciences, University of Benin, Benin City, Edo State, Nigeria.

Abstract

Ecotoxicological effects of industrial chemicals (Rig wash, Oil eater, Nalco, Glycol™) and pesticides (Propoxur, Deltamethrin, Atrazine, Furadan) on Tilapia guineensis (fish) and Aporrectodea longa (earthworms) were tested using the Organisation for Economic Cooperation and Development (OECD) # 203 and 207 protocols. The water and soil ratings indicate that the test chemicals were toxic to the organisms. The estimated 96 hour lethal concentration LC50 values for Rig wash, Oil eater, Nalco EC1304A/COT 505, Glycol, Propoxur, and Deltamethrin were 26.34±0.46, 6.02±0.30, 3.07±0.14, 1.31±0.01, 20.91±0 and 0.01±0 mg/l respectively. In the earthworm bioassay, the estimated 14-day LC50 values for Rigwash, Oil eater, Nalco EC1304A/COT 505, Glycol, Atrazine and Furadan were 80.05±3.5, 151.55±10.7, 172.63±14.2, 63.72±2.43, 4.97±0 and 0.29±0 mg/kg respectively. Safety factors are arbitrarily built in around the LC50 values in order to arrive at environmentally tolerable concentrations. The concentration of a chemical in the receiving environment should not exceed 10% of the L50. The organisms exposed to the test chemicals showed significant difference when compared with the levels measured in the control group. The observed sensitivity of the test organisms to the chemicals indicates that adherence to standard safety limits/measures should be maintained during use and disposal of hazardous chemicals. This would ensure that the biotic components of the Nigerian Niger Delta ecosystem are prudently protected.

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Author Biography

Doris F. Ogeleka, Department of Chemistry, Federal University of Petroleum Resources, Effurun, Delta State

Ecotocology and Environmental Forensics

Senior Sientific Officer

Published
2016-11-30
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Original Articles
Supporting Agencies
National Centre for Energy and Environment, Energy Commission of Nigeria, University of Benin
Keywords:
Toxicity, fish, earthworm, demulsifier, corrosion inhibitor, safety limit, pesticides.
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How to Cite
Ogeleka, D. F., Ogbomida, E. T., Tongo, I., Enuneku, A. A., Ikpesu, T. O., & Ezemonye, L. I. (2016). Impacts of acute exposure of industrial chemicals and pesticides on the survival of fish (Tilapia guineensis) and earthworms (Aporrectodea longa). Journal of Xenobiotics, 6(1). https://doi.org/10.4081/xeno.2016.5660