Scanning electron microscopy of the gills of a freshwater catfish,Rita Rita |
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Authors: | Jagdish Ojha George M Hughes |
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Institution: | 1. Post-graduate Department of Zoology, Bhagalpur University, Bhagalpur, 812007, Bihar, India 2. The Research Unit for Comparative Animal Respiration, Bristol University, BS8 1UG, Bristol, England
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Abstract: | Variations in the gross morphology and surface architecture of the gill filaments and secondary lamellae of a freshwater catfish (Rita rita) have been investigated using scanning electron microscopy. Heterogeneity of the gill has been correlated with the distribution of lamellar water-flow at different regions of a gill filament. Higher lamellar water flow (cc/pore/cmH2O/sec) was estimated for the middle region of the filaments. The filaments are covered with epithelial cells whose surface is provided with well-developed microridges. The lamellae are generally covered with microvillous epithelial cells. The variations in surface architecture of the gill filaments and secondary lamellae have been correlated with their probable functions. |
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