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Genotoxic and morphological damage in Hippocampus reidi exposed to crude oil.

Abstract：

:The present article investigates the responses of Hippocampus reidi exposed to crude oil (10mL/L) for time periods that are characteristic of acute (12, 24, 48 and 96h) and subchronic (168 and 336h) and its recovery at 168h, such as to assess H. reidi as a good sentinel species. These responses were examined by genotoxic and morphologic analyses. There was a control group (n=8) for each group exposed to crude oil (n=8). The results revealed the occurrence of genotoxic damage in erythrocytes of all specimens exposed to crude oil. The damage index (DI) observed for all exposure times were significantly higher compared to those of the respective control groups; the highest DI was observed in specimens exposed to crude oil for 168h. The group exposed to crude oil for 96h had the highest values of micronuclei than all other exposure times. Microscopic inspection of the H. reidi gills revealed the presence of several histopathological changes, all of which were minor severity (structural normal gills). The recovery experiment revealed a significant reduction in genotoxic damages, however the period of 168h was not sufficient to recuperate the histopathology damages. The Seahorse has presented significant genotoxic responses after exposure to crude oil. Furthermore, it is a sedentary fish and is widely distributed; in conclusion this specie can be considered an excellent sentinel organism.

journal_name

Ecotoxicol Environ Saf

journal_title

Ecotoxicology and environmental safety

authors

Cariello Delunardo FA,Ferreira da Silva B,Paulino MG,Narciso Fernandes M,Chippari-Gomes AR

doi

10.1016/j.ecoenv.2012.09.029

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

1-9

eissn

0147-6513

issn

1090-2414

pii

S0147-6513(12)00352-1

journal_volume

87

pub_type

杂志文章,评审

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