Study on Staphylococcal Species Detected in Digestive Tract of Beavers (Castor fiber) and Their Variability with Properties | Chapter 9 | Research Aspects in Agriculture and Veterinary Sciences Vol. 1

 Staphylococci from the intestines of a beaver (Castor fibre) were studied as a contribution to fundamental microbiology and as part of a beaver microbiome investigation.

Methodology: In the north-east portion of Poland, Województwo (Provincie) Podlaskie Gmina-Wizajny, GPS:22o 52E:54o22N, free-living beavers (12), both male and female (aged 4-5 years) were collected using a net and placed in wire cages. In Poland, sampling was made available. The ethical norms for animal handling were observed for sampling the jejunum (12), colon (12), and caecum (6).

The average number of staphylococci discovered in the jejunum was 2.73 1.16 cfu/g (log 10); the average number of staphylococci in the caecum was 1.87 0.37 cfu/g; and the average number of staphylococci in the colon was 2.89 1.70 cfu/g. Following a score analysis using MALDI-TOF mass spectrometry, a high degree of variability in staphylococcal species distribution in the gut of beavers was discovered; in total, nine species were identified, belonging to five clusters, and the strains were assigned to the coagulase-negative staphylococcal species. S. hominis and S. haemolyticus were the most commonly found species (five strains for each). Two strains each of S. epidermidis and S. lentus, S. pasteuri, S. cohnii, S. vitulinus, S. warneri, and S. xylosus, S. pasteuri, S. cohnii, S. vitulinus, S. warneri, and S. xylosus Deoxyribonuclease and nearly haemolysis negative strains were found in fifteen of the strains. Ten isolates (not all of which were from the same species) showed low-grade biofilm forming potential. The majority of the germs were methicillin-resistant and produced a lot of lactic acid.

Conclusion: This study adds to the body of knowledge about the staphylococcal microbiome of beavers and allows for a more in-depth examination of specific strain species.

Author (s) Details

Andrea Lauková
Institute of Animal Physiology, Centre of Biosciences of the Slovak Academy of Sciences, Šoltésovej 4-6, 040 01 Košice, Slovakia.

Jana Šcerbová
Institute of Animal Physiology, Centre of Biosciences of the Slovak Academy of Sciences, Šoltésovej 4-6, 040 01 Košice, Slovakia.

Anna Kandricáková
Institute of Animal Physiology, Centre of Biosciences of the Slovak Academy of Sciences, Šoltésovej 4-6, 040 01 Košice, Slovakia.

Renata Miltko
The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, Instytucka 3, Jablonna 051 10, Poland.

Grzegorz Belzecki
The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, Instytucka 3, Jablonna 051 10, Poland.

Monika Pogány Simonová
Institute of Animal Physiology, Centre of Biosciences of the Slovak Academy of Sciences, Šoltésovej 4-6, 040 01 Košice, Slovakia.

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