Quantitative Assessment of Effects of Zinc on the Histological Structure of the Hepatopancreas of Terrestrial Isopods

The objective of this study was to quantify the effects of zinc exposure on the histological structure of the hepatopancreas of Porcellio laevis. Woodlice were experimentally exposed to various concentrations (1000, 4000, and 8000 mg. kg-¹) of zinc sulphate. Hepatopancreas samples of exposed isopods...

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Veröffentlicht in:Archives of environmental contamination and toxicology 2007-10, Vol.53 (3), p.359-364
Hauptverfasser: Odendaal, J. P, Reinecke, A. J
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description The objective of this study was to quantify the effects of zinc exposure on the histological structure of the hepatopancreas of Porcellio laevis. Woodlice were experimentally exposed to various concentrations (1000, 4000, and 8000 mg. kg-¹) of zinc sulphate. Hepatopancreas samples of exposed isopods were histologically prepared and analysed with Leica QWin image analysis software. The B-cells in hepatopancreases of zinc sulphate - exposed woodlice were reduced in size to varying degrees, compared to that of the control, Percentage Cellular Area (PCA) of the hepatopancreas samples revealed that zoning occurred through the length of hepatopancreas lobes. Analysis of the PCA data of hepatopancreases of P. laevis exposed to the zinc sulphate revealed that there was a decline in PCA, in all the zones, compared to those in the control. The Z3 zone (the part from the middle to three quarters to the back of the tubule) was shown to be the best suited, if PCAs are to be considered as a biomarker in woodlouse toxicity studies.
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1432-0703
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subjects Animal and plant ecology
Animal, plant and microbial ecology
Animals
Applied ecology
Biological and medical sciences
Biomarkers
Contamination
Ecotoxicology, biological effects of pollution
Exposure
Fundamental and applied biological sciences. Psychology
General aspects
Hepatopancreas
Image analysis
Image processing
Isopoda
Isopoda - drug effects
Liver - drug effects
Liver - pathology
Lymphocytes B
Pancreas - drug effects
Pancreas - pathology
Porcellio laevis
Studies
Sulfates
Synecology
Terrestrial ecosystems
Toxicity
Zinc
Zinc Sulfate - toxicity
title Quantitative Assessment of Effects of Zinc on the Histological Structure of the Hepatopancreas of Terrestrial Isopods
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