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Histological changes and copper accumulation in liver and gills of the Senegales sole, Solea senegalensis.

Abstract：

:Senegales sole, Solea senegalensis, adult specimens were subjected to sublethal copper exposure (100 microg SO(4)Cu/L) for 7 days (contamination period) and afterward kept for 4 days without copper exposure (depuration period). In contaminated and detoxified specimens, the hepatocytes indicated a great number of lipid droplets compared to the control specimens. Some ultrastructural alterations such as partial disruption of the microvilli and endothelial lining of the sinusoids were observed in the hepatocytes. Lifting and swelling of the lamellar epithelium were common lesions in S. senegalensis gills due to the copper exposure. On the other hand, in contaminated and detoxified specimens, gills demonstrated separation of respiratory epithelium; chloride and pavement cells were also altered. Copper levels in gills, and especially in liver, increased during sublethal copper exposure (up to 7 days). During the detoxification period, Cu concentrations in gills and liver experienced variable changes. The results of the study indicate that histology is a successful tool capable of revealing sensitively and selectively even the sublethal effects of heavy metals on the environment and aquatic biota.

journal_name

Ecotoxicol Environ Saf

journal_title

Ecotoxicology and environmental safety

authors

Arellano JM,Storch V,Sarasquete C

doi

10.1006/eesa.1999.1801

keywords:

subject

Has Abstract

pub_date

1999-09-01 00:00:00

pages

62-72

issue

1

eissn

0147-6513

issn

1090-2414

pii

S0147-6513(99)91801-8

journal_volume

44

pub_type

杂志文章

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