A L Kotova

St. Petersburg State Budgetary Healthcare Institution "City Polyclinic No. 106"

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A A Tabaeva

АР

А.С. Ракишева

Kazakh National Medical University

I M Yasutis

Igor Popov

St Petersburg University

S A Kondratskaya

Cooperative Institutions

Kazakh National Medical University

St Petersburg University

Nizhne-Svirsky State Nature Reserve

Saint Peter's University

Severtsov Institute of Ecology and Evolution

Institute of Oncology NN Petrov

Genetic Resources Center

Russian Academy of Sciences

Konrad Lorenz Institute for Evolution and Cognition Research

Saint-Petersburg Institute of History

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Brown bullhead Ameiurus nebulosus — new fish species for Russia

Biological Communications (2020)

Igor Popov A L Kotova

The native habitat of the brown bullhead Ameiurus nebulosus is located in the eastern part of North America. This species was introduced in Europe, Southwestern Asia and New Zealand. It was supposed that it entered Russia from the southwest and now inhabits some water bodies at the border with Ukraine and Belarus. Information about bullheads in Russia was searched for in scientific editions and angler’s blogs. Anglers’ reports have been verified by survey and fishing. It turned out that brown bullheads did in fact appear in Russia, but not where they were expected: they were found by the city of Saint Petersburg on the Karelian Isthmus, i.e., on the territory between Lake Ladoga and the Gulf of Finland of the Baltic Sea. They inhabit at least three lakes. This invasion resulted from release by unauthorized individuals. The revealed habitats are linked by brooks with the river systems of the Baltic Sea Basin. The following spread of the brown bullhead is possible due to intentional releases and natural processes.

Baltic sea

10.21638/spbu03.2020.303

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Salmonella carrier state and biological characteristics of the infectious agent.

PubMed (1988)

A L Kotova S A Kondratskaya I M Yasutis

Salmonella carrier state (42.6%-S. enteritidis and 34.4%-S. dublin) was demonstrated in subjects after acute salmonellosis as well as in healthy persons infected with salmonella as a result of occupational exposure to poultry (8.8% in humans exposed to chickens and 6.1% in those exposed to ducks) and sheep (2.8%). The carrier state was accompanied by intermittent pain in the epigastrium, diminished appetite, diarrhoea etc. Most of the carrier subjects with a history of salmonellosis exhibited, upon rectoromanoscopy, a varying degree of proctosigmoiditsi. The etiological role of S. typhimurium was proved beyond doubt, as well as its ability to cause salmonellosis outbursts, sporadic cases of the disease and the carrier state. When large industrial facilities specializing in poultry processing were investigated, the salmonella carrier state was revealed in practically healthy poultry--in 16% of chickens and 12% of ducks. The salmonella organisms isolated from carrier persons had, with some exceptions, typical properties, being virulent in that they caused death of experimental animals, seeded their internal organs and induced pathogenicity-associated enzymes. Multiple resistance to antibiotics was demonstrated in salmonella isolated from poultry; also determined was its plasmid nature. Pronounced resistance of the above salmonella subtypes to tetracycline-related antibiotics and streptomycin may be due to the fact that these drugs are used in poultry raising.

Salmonella enteritidis

Poultry farming

Salmonella infection

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Резистентность микобактерий туберкулеза к дезинфицирующим веществам

Vestnik (2013)

A L Kotova А.С. Ракишева

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[Rare serotypes of salmonella circulating in Kazakhstan].

PubMed (2003)

A A Tabaeva A L Kotova

The serotypic picture of rare-type salmonellas, isolated in the South region of Kazakhstan, was studied. The circulation of 31 serotypes of 17 groups was established. The circulation of serotypes 0:13, 0:38, 0:44 serogroups, was found among people (patients and bacterium-carriers). Serotypes 0:28, 0:42, 0:62, 0:66 serogroups, were isolated only from the environment. The combined circulation (patients, bacterium-carriers, environment) was registered for seroviruses 0:14, 0:35 and serogroups 0:58. The obtained data suggested that separate rare salmonella types area tied to ecology.

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[Problems of the taxonomy and nomenclature of bacteria of the genus Salmonella].

PubMed (2002)

A A Tabaeva A L Kotova

The main stages of the development of the nomenclature and classification of salmonellae are analyzed. Modern problems and different points of view of microbiologists on the methods of their solution are presented in detail. The acceptability of some projects is discussed.

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