The Effect of Phenanthrene on Some Hematological Indices Yellowfin Seabream (Acanthopagrus Latus)

Background: we examined the effects of phenanthrene (phe) on hematological parameters of yellowfin seabream (acanthopagrus latus). methods: the research was carried out in jan 2016 at khorramshahr university of marine science and technology, khorramshahr, iran. fish were injected with different concentrations (0, 2, 20 and 40 mg/kg) of phe and blood, samples were taken from fish 1, 4, 7 and 14 d after injection. results: results of phe-treated fish showed a decrease in red blood cell and white blood cell counts, hematocrit amount after 4 d and in hemoglobin concentration after 7 d (p<0.05). mean corpuscular hemoglobin concentration was enhanced in fish exposed to phe up to day 4 (p<0.05). phe-exposed fish showed an increase in the percentage of neutrophils with a decrease in the percentage of lymphocytes (p<0.05) and did not represent any effects on percentage of monocytes and eosinophils, mean corpuscular volume and mean corpuscular hemoglobin concentration. conclusion: changes in hematological parameters after exposure to phe result in a decrease of non-specific immunity.