Aim. To investigate the antibacterial properties of the fl owers of melliferous plants on the cultures isolated from honeycombs affected by foulbrood. Methods. Microbiological, cultural-morphological, biochemical, electron- microscopic, statistical. Results. Antibacterial effect on the Melissococcus pluton 8.1 strain was demonstrated by the fl ower extracts of 14 plant species and that on Bacillusaspecies – by the fl ower extracts of 27 plant spe- cies blossoming in the early spring. Conclusions. To study bee colonies affected by foulbrood, it is possible to use the properties of such nectariferous plants as Lamium album, Acer campestre, Prunus tomentosa, Allium cepa, Tagetes patula, Spiraea japonica, Achillea millefolium, Calluna vulgaris, Mentha piperita, Tilia cordata, Centaurea jacea, Lysimachia nummularia. The results of the experiments on the culture of microorganisms, isolated from the honeycombs of the bee colonies affected by foulbrood, demonstrated that these plants could be effective for the
prevention and treatment of bacterial bee diseases.
Aim. To investigate the microbiota of honeycombs with affected bee brood. Methods. Visual, immunochro- matographic, cultural-morphological, biochemical, electron-microscopic methods were used to isolate and previously identify a number of microorganisms. Results. 10 samples of honeycombs with sealed brood were studied. The following agents of bee diseases were isolated and previously identifi ed: Paenibacillus larvae – American foulbrood; Вasillus paraalvei – parafoulbrood; Melissococcus pluton – European foulbrood. Con- clusions. The number of cocci, spore-forming coli and yeasts, found in the samples of honeycombs, commonly represent normal microfl ora of bees, but their number increases signifi cantly in case of viral and bacterial infections.
Purpose: To analyze and summarize information on the problem of contamination of aquatic ecosystems with antibiotics. Findings: The presented work describes global risks associated with the presence of antibiotics in the aquatic environment and aquatic organisms, and demonstrates quantitative and qualitative assessment of contamination with antibiotic residues in ocean aquatic resources using bivalves. Practical value. The review can be useful for the public engaged in ecology, agriculture, veterinary medicine, and fisheries; for experts in the field of pharmacology and microbiology. This paper can also be interesting for teachers and students of field-oriented universities. Keywords: Antibiotics, wastewater contamination with antibiotics, antibiotic resistance, stability genes, aquatic biocenoses, aquaculture, bivalve molluscs.
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