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Ammonium sulphate induced stress related alterations in the respiratory epithelium of the airbreathing organ of the catfish Heteropneustes fossilis (Bloch)

DRS at CSIR-National Institute of Oceanography

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Title Ammonium sulphate induced stress related alterations in the respiratory epithelium of the airbreathing organ of the catfish Heteropneustes fossilis (Bloch)
 
Creator Paul, V.I.
Banerjee, T.K.
 
Subject air-breathing fish
bioaccumulation
chemical pollutants
ammonium compounds
toxicity
sublethal effects
fish physiology
fish diseases
respiration
histopathology
tissues
respiratory organs
secretion
necroses
degeneration
regeneration
Heteropneustes fossilis
 
Description In this paper, histopathological changes in the inner lining of the accessory respiratory organ of Heteropneustes fossilis following exposure to sublethal concentration (0.2 gl sup(-1)) of ammonium sulphate (3 mg l sup(-1) total ammonia-N) has been described. The goblet cells show periodic increased followed by decreased secretory activities. Necrosis and shedding of the epithelial cells over the secondary lamellae cause periodic haemorrhages which lead to degeneration and decreased number of secondary lamellae. Subsequently regeneration takes place each time as evidenced by the appearance of inflammatory tissue. Fusion of more than one secondary lamellae is also common. Regeneration also leads to uncontrolled hyperplasia of haphazardly arranged epithelial cells. This hyperplasia causes increased distance of respiratory blood-air barrier in the secondary lamellae, leading to impaired normal aerial respiration.
 
Date 2009-01-20T12:01:11Z
2009-01-20T12:01:11Z
1996
 
Type Journal Article
 
Identifier Journal of Biosciences, Vol.21; 519-526p.
http://drs.nio.org/drs/handle/2264/2145
 
Language en
 
Rights Copyright [1996]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Indian Academy of Sciences, Bangalore, India