Van Balığı (Alburnus tarichi (Güldenst dt, nın Sindirim Kanalı Üzerinde Histomorfolojik ÇalıĢma.

Van fish is an anadromic fish in the family Cyprinidae, endemic to the Lake Van basin. Fish feeding and care enters the streams flowing into the lake from Lake Van in April-July. In these aquatic environments, differences are observed in the feeding behavior of the fish. In this study, the digestive tract of 30 Van fish sampled from Lake Van and Karasu Stream between April and July were examined morphometrically and histologically. When the digestive tract of the Van fish was examined, it was observed that there was no obvious stomach structure. It was determined that the digestive tract consists of the esophagus, stomachlike structure that serves as the stomach, anterior intestine, posterior intestine and anus. When the digestive tract of Van fish is examined, it consists of the outermost serous layer, the muscularis layer, the submucosa layer and the innermost mucosa layer consisting of folds towards the lumen. It was determined that these layer thicknesses varied between fish sampled from lakes and streams. Diameter, mucosal width, mucosal length, mucosal folds, muscularis thickness, submucosa thickness and length were measured morphometrically. It was determined that these values were higher in the fish sampled from the lake compared to the fish sampled from the rivers. Measurements in the digestive tract of van fish were determined for the first time in this study. These measured values are thought to be related to the nutrition, stress and physicochemical structure of the water. [ABSTRACT FROM AUTHOR]