Oil decontamination of bottom sediments using Limnodrilus hoffmeisteri (Oligochaeta: Tubificidae)
- 1 February 2010
- journal article
- Published by Pleiades Publishing Ltd in Contemporary Problems of Ecology
- Vol. 3 (1), 15-18
- https://doi.org/10.1134/s1995425510010042
Abstract
Using aquatic worms (Oligochaeta: Tubificidae) for oil decontamination of bottom sediments has been first considered. In a set of experiments on Limnodrilus hoffmeisteri Claparede, 1862, worms survived the exposure to oil content as high as 16.72 g/kg; they died of natural causes. Vigorous silt agitation by worms (bioturbation) was observed: the silt layer thickened as compared with that in reference aquaria without worms. Besides, it tended to thicken with increasing oil content of sediments. Within 30 days Limnodrilus hoffmeisteri reduced oil content by 1.20 to 1.72 times, or by 16.67 to 41.90% (a<0.05), compared with that in reference aquaria.Keywords
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