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Ultrastructural aberrations in the hepatopancreas of Metapenaeus dobsoni (Miers) exposed to mercury

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Relation http://eprints.cmfri.org.in/1845/
 
Title Ultrastructural aberrations in the hepatopancreas of Metapenaeus dobsoni (Miers) exposed to mercury
 
Creator Manisseri, Mary K
Menon, N R
 
Subject Prawn and Prawn fisheries
 
Description Toxic effect of mercury on, the flower-tail shrimp, Metapenarus dobsoni (Miers) was investigated by
exposing the animal to sub-lethal concentrations of 0.005 and 0.015 ppm of the metal. As pollutant-induced
stress leads to cellular responses and often gets manifested as ultrastructural alterations, an attempt was made to delineate the alterations and damage caused to fine structure level with the help of electron microscopy.
The hepatopancreas, which has been identified as a target organ, depicted considerable' ultrastructural
alterations. Mitochondria1 membrane was damaged and the cristae were swollen, assuming circular shape at
many instances. Endoplasmic reticulum was totally damaged. Excessive accumulation of lipid was noticed in
the R-cells. Electron-dense inclusions were found "nipped off' from the basal lamina. Merging of vesicles
resulted in collection of electron-dense materials in larger residual vacuoles. The damage seemed to be dosedependent. Ultrastructural damage of the cellular components was found to render the cardinal organelles
less or non-functional, thus affecting the functional integrity of the organism. Pollutant induced injuries of
this kind often prove to be useful biological tools to assess the stress profile
 
Publisher MBAI
 
Date 2006
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/1845/1/Mary_89-94.pdf
Manisseri, Mary K and Menon, N R (2006) Ultrastructural aberrations in the hepatopancreas of Metapenaeus dobsoni (Miers) exposed to mercury. Journal of the Marine Biological Association of India, 48 (1). pp. 89-94.