BaP-carcinogenicity and mutagenicity, growth and food reserves of clariid catfish to the water soluble fraction (WSF) of bonny light crude oil BLCO

Abstract

The toxicity and PAH of C. gariepinus (0.98±0.01g, n=480) to 1, 3, 6, 9, 12 and 0.0 ml/L of BLCO oil was determined and were exposed to 3 treatment sublethal concentrations (2.40, 1.20, 0.60 (corresponding to 1/16, 1/8 and 1/4 of 96h LC50) and 0.00 ml/L of WSF of BLCO in triplicate replications of 60 fish per treatment for 10 weeks. The 96h median lethal concentration of BLCO to the experimental fish fingerlings was 9.6 ml/L. The mean ∑ 16PAH gave 6% compared to 11% that of its mean 8PAH. Mean TEQ and MEQ in 8PAH both corresponded to 11%, however BaP-TEQ in BLCO ranged from 0% in Chry to 84% in DahA while BaP-MEQ ranged from 0% in Chry to 30% in DahA. The respective Benzo [a] Pyrene carcinogenic and mutagenic equivalents of Clarias gariepinus to BLCO was 2 and 9%. There was a significant difference (P