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International Journal of Basic Science and Technology

A publication of the Faculty of Science, Federal University Otuoke, Bayelsa State

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Archive | ISSUE: , Volume: Apr-Jun-2021

Chain of Contamination of Seafood with References to Seasonal Distribution of Microbial Loads and Trace Metals in Fishes from Regional Markets, Niger Delta Nigeria


Author:Ikpesu, T.O. ,Ovili, L

published date:2022-May-25

FULL TEXT in - | page 81 - 89

Abstract

The distribution pattern of microbes and trace metals in the dominant seafood in the major markets in Southern Nigeria was investigated. Three markets were chosen for this study; Swali, Opolo and Otuoke Markets. Swali market is the landing point for the fishes, while the other markets make purchases from the former. Microorganisms were isolated by using selected media and identified using Bergey’s manual. Heavy metals; Cu, Zn, Pb, and Cd concentrations were analyzed using Atomic Absorption Spectrophotometer. The microbial isolates include Actinomycetes species, Klebsiella pneumonia, Enterococcus species, Salmonella species. Proteus species, Micrococcus species, Bacillus cereus, Listeria monocytogenes, Chromatium species, Enterobacter aerogenes,Yersinia species, Shigella species, Pseudomonas species, Micrococcus species, Staphylococcus albus, Actinomycetes species, Mucor species,Aspergillus flavus, Fusarium species, Rhizopus stlonifera, Trichophyton species, Candida tropicalisi and Aspergillus species. Spatial distribution revealed that Otuoke market had the highest microbial load, while Swali had the least. However, no descripancy in the heavy metals loads in the three stations, but certainly above the regulatory limit. The high microbial loads reported in the markets with the exception of the Swali market could be attributed to chain of contamination by the fish's mongers and retailers. Fish is one of the most affordable commodity and so great concern and awareness must be created in order to curb the spread of microorganisms and heavy metals that could cause adverse health effects.

Keywords: Heavy metals, Fish, Microbes, Southern Nigeria, Seafood

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