Assessment of the response of Goniopsis pelii (Decapoda, Graspidae) to crude oil in static bioassay
Journal Title: Advances in Environmental Sciences - International Journal of the Bioflux Society - Year 2012, Vol 4, Issue 3
Abstract
The assessment of acute toxicity of Nigeria Bonny light crude oil against purple mangrove crab, Goniopsis pelii of a tidal creek, Oron, Akwa Ibom State, Nigeria was conducted in the University of Uyo, Uyo, Nigeria Fisheries laboratory under static bioassay in November, 2009. The crude oil was poorly toxic to the test organism, causing delayed mortality and consequent extension of the bioassay to 8 days. The LC50 indicated that the toxicity of the test compound was higher on the 8 day than at 96 hour, with a toxicity factor indicating that the crude oil was 3 times more toxic against G. pelii on the 8 day than at 96 hour. Paired t-test showed that there was no significant difference (p>0.05) between 96h LC50(791.9 ml L1) and 8d LC50 (275.8ml L1). This study showed that G. pelii is not an early warning indicator for oil toxicity but its response during spills could serve as a good indicator of adverse impact.
Authors and Affiliations
Alice Ekwu, Arit Utong, Blessing Oribhabor
Keywords
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