Study of Morpho Histology of Alimentary Canal in Relation to Feeding Behaviour of Channa Punctatus From the Wetlands (Chaur) of Begusarai District N. Bihar india

Swapna Choudhary; Uttam Kumar; Utpal Kumar

Volume : III, Issue : VII, July - 2014

Study of Morpho Histology of Alimentary Canal in Relation to Feeding Behaviour of Channa Punctatus From the Wetlands (Chaur) of Begusarai District N. Bihar india

Swapna Choudhary, Uttam Kumar, Utpal Kumar

Abstract :

Murrels are very common fish available in the wetland (chaurs) of North Bihar India. In the present study one of the most important species of murrels the Channa punctatus has been selected for the study of its morphohistology and its relation with the feeding behaviour .The study will be helpful for the culture and farming of Channa species. The Anatomy and histology of alimentary canal of Channa punctatus was found to be of carnivorous type . The alimentary canal has a short relatively oad oesophagus, stomach with cardiac and pyloric region with two pyloric ceaca, intestine of moderate size and rectum is not externally differentiated. The histological structure consists of four layers mucosa, submucosa, muscularis and serosa. Histologically the different region of the alimentary canal has their own peculiarity. The stomach has cardiac and pyloric region the cardiac part has gastric glands .The intestine has numerous mucosal folds for absorption. Channa punctatus is a carnivorous and surface feeder fish .Its food consist of mainly of fish, crustaceans, insects, mollusk, shells, plant parts and semi digested food. The feeding intensity is minimum during eeding season and the food varies according to the season and avaibility of food. Average R L G value was .85 throughout the study period.