Comparative study of bioconcentration and EROD activity induction in the Japanese flounder, red sea bream, and Java medaka exposed to polycyclic aromatic hydrocarbons

Environmental Toxicology
Joseph O CheikyulaSeiichi Uno

Abstract

Japanese flounder (Paralichthys olivaceus), red sea bream (Pagrus major), and Java medaka (Oryzias javanicus) were exposed to water borne polycyclic aromatic hydrocarbons (PAHs) for 10 days to compare PAH bioconcentration and P450 enzyme induction by ethoxyresorufin-O-deethylase (EROD) activity for use in oil spill biomonitoring in Asian waters. Target exposure concentration for phenanthrene, pyrene, and chrysene were 30 microg/L each, while benzo[a]pyrene was 3.0 microg/L. Phenanthrene and pyrene were accumulated in the flounder and red sea bream; chrysene was found only in the livers of the red sea bream, while Java medaka accumulated the high molecular weight benzo[a]pyrene along with the other PAHs. Total PAH concentrations increased with duration of exposure in the red sea bream from 184+/-37 ng/g wet weight (w.w.) in day 2 to 572+/-72 ng/g (w.w.) in day 10; It, however, decreased in the other two species. Among the three fish species, Java medaka had the highest initial total PAH concentration of 388+/-62 ng/g (w.w.); this was, however, reduced to the lowest final concentration of 52.3+/-3 ng/g (w.w.). It also had the highest EROD activity of 4.2+/-2.8 n mol/min/mg protein compared to the lowest of 0.11+/-0.03 n mol/min/m...Continue Reading

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Citations

Jul 9, 2013·Environmental Science and Pollution Research International·Seonock WooSeungshic Yum
Apr 12, 2014·Marine Environmental Research·Anderson Abel de Souza MachadoAdalto Bianchini
Jan 10, 2012·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Joana CostaMarta Ferreira
Jan 29, 2011·Ecotoxicology and Environmental Safety·Sandipan PalSeiichi Uno
Feb 26, 2020·International Journal of Environmental Research and Public Health·Masato Honda, Nobuo Suzuki
Sep 2, 2019·Environmental Toxicology and Pharmacology·Sukhendu Dey, Apurba Ratan Ghosh

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