论文信息 - Sanitary and bacteriological studies of water and European catfish [Silurus glanis L.] during wintering

Sanitary and bacteriological studies of water and European catfish [Silurus glanis L.] during wintering

Sanitary and bacteriological studies were conducted during European catfish (Silurus glanis L.) wintering from January 3, 2001 to March 7, 2001. Samples of water, skin and digestive tract contents were collected every two weeks. Qualitative analyses included culturing heterotrophic bacteria on a broth-agar medium at temperatures of 4 C for 7 days of incubation (TVC 4 C), 22 C for 72 hours of incubation (TVC 22 C) and 37 C for 24 hours of incubation (TVC 37 C). The total number of coliforms (TC), the total number of fecal coliforms (FC) and the total number of fecal streptococci (FS) were determined. The results obtained confirmed that the sanitary and bacteriological state of the water in the wintering pond was good. The number of microbes per cm of skin varied from 10 to 10, and in 1 g of digestive tract contents from 10 to 10.

M. Teodorowicz | I. Zmysłowska | I. Gołaś | D. Lewandowska

[1] I. Zmysłowska,et al. Comparison of the microfloras present in the aquatic environment, fish, and fish feeds , 2001 .

[2] I. Zmysłowska,et al. Microbiological evaluation of water and digestive tract contents of tench [Tinca tinca L.] during tank rearing , 2000 .

[3] V. Inglis,et al. Survival of Escherichia coli in the intestine of fish , 1997 .

[4] M. Zmysłowska. The effect of temperature and organic substances on the survival of Escherichia coli and Streptococcus faecalis in lake water , 1993 .

[5] H. Sugita,et al. The vitamin B12-producing ability of the intestinal microflora of freshwater fish , 1991 .

[6] T. Trust,et al. The bacterial flora in the alimentary tract of freshwater salmonid fishes. , 1974, Canadian journal of microbiology.