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Seahorse (Hippocampus reidi) as a bioindicator of crude oil exposure.

Abstract：

:This study explored the suitability of the seahorse Hippocampus reidi (Ginsburg, 1933) for assessing biomarkers of genotoxic effects and its use as a sentinel organism to detect the effects of acute exposure to petroleum hydrocarbons. Fish were exposed to three concentrations of crude oil (10, 20 and 30 g/kg) for 96 h, and the activity of phase II biotransformation enzyme glutathione S-transferase (GST) was measured. In addition, we performed genotoxicity assays, such as comet assay, micronucleus (MN) test and nuclear abnormalities (NA) induction, on the erythrocytes of the fish species. Our results revealed that the inhibition of hepatic GST activity in H. reidi was dependent on increasing crude oil concentrations. In contrast, an increase in the damage index (DI) and MN frequency were observed with increased crude oil concentrations. These results indicate that the alkaline comet assay and micronucleus test were suitable and useful in the evaluation of the genotoxicity of crude oil, which could improve determinations of the impact of oil spills on fish populations. In addition, H. reidi is a promising "sentinel organism" to detect the genotoxic impact of petroleum hydrocarbons.

journal_name

Ecotoxicol Environ Saf

journal_title

Ecotoxicology and environmental safety

authors

Delunardo FA,de Carvalho LR,da Silva BF,Galão M,Val AL,Chippari-Gomes AR

doi

10.1016/j.ecoenv.2015.03.016

subject

Has Abstract

pub_date

2015-07-01 00:00:00

pages

28-33

eissn

0147-6513

issn

1090-2414

pii

S0147-6513(15)00115-3

journal_volume

117

pub_type

杂志文章

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