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E3 Journal of Environmental Research and Management

E3 Journal of Environmental Research and Management Vol. 8 (2) pp. 011-017, June 2017; © E3 Journals; ISSN 2141-7466
DOI: http://dx.doi.org/10.18685/EJERM(8)2_EJERM-17-011

Accumulation of Zinc by Pteridium aquilinum (bracken fern) with different plant stimulants and bioassay with Clarias gariepinus

Olaifa 1 , Flora E. Ajagbe 1 * , Abdulazeez O 1
1 Department of Aquaculture and Fisheries Management, University of Ibadan, Ibadan, Nigeria
*Corresponding Author E-mail: floraolaifa@yahoo.com
Accepted 16 May 2017

Abstract

An experiment was carried out to determine the ability of Pteridium aquilinum to accumulate zinc from solutions containing 10 mg/l zinc and 10mg/l of different inorganic and organic manures and to assess the effect of zinc on Clarias gariepinus. A 96-hour bioassay was carried out using Clarias gariepinus juveniles to determine the effect of its exposure on haematology and histology. The water and P.aquilinum were also analysed for zinc and other parameters. Variations were observed in haematological parameters such as Red blood cell, Packed cell volume, White blood cell, Haemoglobin and enzymes (Serum Glutamic – Oxaloacetic Transaminase, SGOT and Serum Glutamic – Pyruvic Transaminase, SGPT),while platelet and total protein showed no significant difference. Damage observed in organs included necrosis, cell individualization and disorganization and congestion.

Keywords: zinc, Clarias gariepinus, bracken fern, haematology, histology

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