[Bacteriological studies of the intestinal content of aquatic birds, fishes, and frogs with special reference to the presence of non-cholera vibrios (NCV) (author's transl)].

In a screening study of surface waters, the authors were successful in culturing NCV in 2/3 of cases. Since these organisms are incapable of multiplication in open waters and yet were present in water samples in considerable amounts, it was postulated that they persisted in certain forms of aquatic life. To elucidate this question, the intestinal contents and in some cases, the bile of a total of 110 animals belonging to 17 different bird, fish, and frog species from different habitata were examined. From these animals, 51.8% were found to be carriers of NCV and 7.3%, of salmonella. Additionally, 4.5-15.5% were found to carry Aeromonas, Plesiomonas, Staphylococcus aureus, and Pseudomonas aeruginosa. Fish and frogs were found to offer NCV organisms possibilities to persist while migratory birds such as stock ducks import them even from tropical areas. When compared with the results of studies performed, salmonella carriers among Danube fish were found to have increased in number.