Journal of Aquaculture Research & Development

Microbial load of fresh water snail (Pila ovata) from Nembe creek, Niger delta, Nigeria

International Conference on Aquaculture & Fisheries

July 20-22, 2015 Brisbane, Australia

Akise O G2, Ehigiator F A R1, Eyong M M3 and Jonah A A1

ScientificTracks Abstracts-Workshop: J Aquac Res Development

Abstract:

Microbiological assessment of one of the most common aquatic mollusc in the Niger Delta, Pila ovata was carried out. Fresh samples were collected from three locations from March to May. The samples were analyzed using microbiological techniques. The total viable count varied between 9.2×107 cfu/g and 9.5×107 cfu/g. The mean heterotrophic count for bacterial varied between 1.1×106 cfu/g to 6.3×107 cfu/g and mean heterotrophic fungi count varied between 2.7×105 cfu/g to 3.9×106 cfu/g. However, no significant differences (P>0.05) was observed in the microbial counts between samples from the different locations. A total of 50 isolates characterized as Proteus, Escherichia coli, Klebsiella, Streptococcus, Pseudomonas, Micrococcus, Staphylococcus, Serratia, Vibro, Samonella, Nesseria, Actinectobacter, Citrobacter, Yersinia, Mycobacterium, Enterobacter, Providencia, Bacillus, Shigella, Aspergillus, Botrytis, Cladosporium, Cryptomonas, Curvularia, Fusarium, Geotrichum, Helminthosporium, Mucor, Neurospora, Penicillium, Rhodotorula, Trichodema and Yeast, were isolated from the freshwater snails. Proteus, E. coli, Klebsiella, and Streptococcus 9(4.9%) were the most predominant bacteria species followed by Pseudomonas, Micrococcus, Staphylococcus and Serratia 8 (4.3%), Vibro 7( 3.8%), Salmonella 6 (3.2%), Nesseria 4 (2.1%), Actinetobacter, Citrobacter and Yersinia 3 (1.61%), Mycobacterium, Enterobacter and Providencia 2 (1.1%), Bacillus and Shigella 1 (0.54%). Aspergillus 28 (15.0%) was the most predominant fungi species, followed by Penicillium 16 (8.6%), Mucor 8 (4.3%), Cryptomonas, Rhodotorula and Trichodema 5 (2.7%), Cladosporium 4 (2.2%), Botrytis and Yeast 3 (1.6%), Curvularia, Helminthosporium and Neurospora 1 (0.6%). The study revealed that freshwater snails (Pila ovata) samples from Nembe Creek, Niger Delta of Nigeria are heavily contaminated with diverse microorganisms and exceeded the acceptable standard limit for food recommended by FAO/WHO, making them unfit for human consumption. The higher concentration of these micro organisms on the River bank is suspected to be due to lots of activities carried out including disposal of faecal matters and untreated sewage. Consequently, Pila ovata from Nembe Creek, Niger delta are unfit for human consumption.

Biography :

Akise O G is working in the Department of Fisheries and Aquaculture, Faculty of Agriculture and Life Science in Federal University Wukari, Nigeria.