Clarias batrachus and Heteropneustes fossilis have well developed gills with two sets of four holobranch,
each set having a gill arch and two rows of primary filament or lamellae projecting caudolaterally. The
gills of Monopterus cuchia is not much more prominent and are compact in nature. Histologically, the cells present in
the gills of Clarias batrachus and Heteropneustes fossilis is almost similar. The suppression of gill lamellae in Monopterus
cuchia are thought to be its adaptation to their environment which becomes muddy and semi terrestrial. The different
cells present helps in number of gaseous exchange functions. Comparing the entire groups of air breathing fishes
the shape, size and quantity is found to be reduced in Clarias batrachus, Heteropneusts fossilis and more reduced in
Monopterus cuchia. Histochemically, the mucous goblet cells of gills showed strong reactions with AB pH 2.5 indicating
the presence of glycoproteins with carboxyl groups and/ O sulphate esters.
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Author Name: Banasri Mech, Juthika Borah, A. K. Rai
URL: View PDF
Keywords: Gills, Histological, Histochemical
ISSN: 2249-555X
EISSN: 2249-555X
EOI/DOI: 10.15373/2249555X
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