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dc.contributor.authorPaul, V.I.
dc.contributor.authorBanerjee, T.K.
dc.date.accessioned2009-01-20T12:01:11Z
dc.date.available2009-01-20T12:01:11Z
dc.date.issued1996
dc.identifier.citationJournal of Biosciences, Vol.21; 519-526p.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/2145
dc.description.abstractIn 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.
dc.language.isoen
dc.publisherIndian Academy of Sciences, Bangalore, India
dc.rightsCopyright [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.
dc.subjectair-breathing fish
dc.subjectbioaccumulation
dc.subjectchemical pollutants
dc.subjectammonium compounds
dc.subjecttoxicity
dc.subjectsublethal effects
dc.subjectfish physiology
dc.subjectfish diseases
dc.subjectrespiration
dc.subjecthistopathology
dc.subjecttissues
dc.subjectrespiratory organs
dc.subjectsecretion
dc.subjectnecroses
dc.subjectdegeneration
dc.subjectregeneration
dc.subjectHeteropneustes fossilis
dc.titleAmmonium sulphate induced stress related alterations in the respiratory epithelium of the airbreathing organ of the catfish Heteropneustes fossilis (Bloch)
dc.typeJournal Article


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