Authors: Ajayi A.O., Balogun S. A., Adegbehingbe K.
Scientific Research and Essay Vol. 3 (5), pp. 174-179, May, 2008
Abstract
The microbial population of the sampling stations was determined in the study during the rainy and dry
season. It was observed that crude oil-producing areas are thickly populated with microorganism
compared with the control site. This could be as a result of post-pollution microbial activity. Example is in Ayetoro recording the highest of 240 x 1ct cfu/ml compared with Sabomi having a record of 7×103 cfu/ml as the highest in these periods. Various microbial species were encountered during the study including common oil degraders like Pseudomonas spp., Bacillus spp., Proteus spp., Enterobacter spp. and Klebsiella spp. A total of one hundred and seventy five (175) microbes were isolated and identified during the study. This includes Bacillus species (18), Bacillus pasteurii (2), Bacillus cereus (5), Bacillus
macerans (9), Bacillus circulans (16), Bacillus coagulans (2), Bacillus subti/is (1), Bacillus Iicheniformis
(3), Bacillus alvei (1), Bacillus panthothemicus (1), Klebsiella species (12), Vei/lonella spp. (15),
Pseudomonas spp. (17), Pseudomonas diminuta (2) Pseudomonas mallei (2), Pseudomonas
pseudomallei (1), Pseudomonas aeruginosa (1), Micrococcus spp. (17), Micrococcus varians (2),
Neisseria spp. (4), Streptococcus spp. (6), Streptococcus homonis (1), Proteus spp. (9),
Staphylococus spp. (8), Staphylococcus aureus (1) Sarcina maxima (1), Enterobacter spp. 19), Serratia spp. (4), Serratia marcescen (2) and Arthrobacterspp. (4).