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Published on: October 31, 2019
Oil-utilizing bacteria associated with fish from the Arabian Gulf
S S Radwan1, R H Al-Hasan, H M Mahmoud
1Department of Biological Sciences, Faculty of Science, Kuwait University, Kuwait.
Journal of Applied Microbiology
|October 24, 2007
Summary
Fish host millions of oil-utilizing bacteria capable of degrading hydrocarbons. These bacteria, identified from the Arabian Gulf and fish farms, show potential for cleaning oily waters through their consumption of crude oil and specific compounds.
Area of Science:
- Marine microbiology
- Environmental science
- Bioremediation
Background:
- Aquatic ecosystems, including fish, harbor diverse microbial communities.
- Oil pollution poses a significant threat to marine environments.
Purpose of the Study:
- To quantify and identify oil-utilizing bacteria associated with fish.
- To assess the hydrocarbon-degradation capabilities of these bacteria.
Main Methods:
- Standard dilution-plate method using crude oil as a sole carbon source.
- Identification of bacteria using 16S rRNA sequencing.
- Analysis of hydrocarbon degradation using gas-liquid chromatography.
Main Results:
- Millions of oil-utilizing bacteria were found on fish from the Arabian Gulf and fish farms.
- Identified genera include Psychrobacter, Vibrio, Planococcus, Pseudomonas, and Actinobacterium.
- All isolates degraded various n-alkanes and aromatics; bacterial biomass consumed crude oil, n-octadecane, and phenanthrene.
Conclusions:
- Fish are associated with abundant oil-utilizing bacteria.
- These bacteria possess significant hydrocarbon-degradation potential.
- The findings suggest a role for these bacteria in bioremediation of oily waters.
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