Abstract
The estimation of species composition, abundance and biomass of cyanobacteria in “bloom” as well as the search for toxic species has been undertaken for the first time in 20 water bodies and water courses of Belarus mainly used for public recreation. There were identified 50 representatives of cyanobacteria assigned to 18 genera, among them three species were marked for the first time for the Belarus: Snowella atomus Komárek et Hindák., Anabaenopsis arnoldii Aptekar, Anabaenopsis kelifii Kog. By combining molecular-biological and analytical methods and by using genetic markers when studying toxic «water blooms» the search of genes responsible for synthesis of hepatotoxic microcystin, nodularin, cylindrospermosin and neurotoxic saxitoxin was undertaken. It has been shown that in all the investigated lakes and rivers there were cyanobacterium relating to Anabaena and Microcystis genera that can synthesize highly toxic microcystins – LR, RR, YR. Saxitoxin synthesis genes and close to it variants of paralytic toxins such as goniatoksins 5, 6, dekarbamoilgoniatoksin 2, dekarbamoilsaksitoksin and neosaksitoksin were found in 7 waterbodies.
Highlights
На 20 водных объектах Беларуси, используемых для массового отдыха населением, впервые проведена оценка видового состава, численности и биомассы цианобактерий при «цветении» воды, а также результаты поиска среди них токсичных видов
The estimation of species composition, abundance and biomass of cyanobacteria in “bloom” as well as the search for toxic species has been undertaken for the first time in 20 water bodies and water courses of Belarus mainly used for public recreation
There were identified 50 representatives of cyanobacteria assigned to 18 genera, among them three species were marked for the first time for the Belarus: Snowella atomus Komárek et Hindák., Anabaenopsis arnoldii Aptekar, Anabaenopsis kelifii Kog
Summary
Выявлено 50 представителей цианобактерий, отнесенных к 18 родам, из них 3 вида отмечены впервые для Беларуси – Snowella atomus Komárek et Hindák, Anabaenopsis arnoldii Aptekar, Anabaenopsis kelifii Kog. С помощью сочетания молекулярно-биологических и аналитических методов в исследовании токсичных «цветений», использования генетических маркеров, выполнен поиск генов синтеза гепатотоксичного микроцистина, нодулярина и цилиндроспермозина, нейротоксичного сакситоксина. Что во всех исследованных водоемах и водотоках присутствовали цианобактерии родов Anabaena и Microcystis, синтезирующие высокотоксичные микроцистины – LR, RR, YR. There were identified 50 representatives of cyanobacteria assigned to 18 genera, among them three species were marked for the first time for the Belarus: Snowella atomus Komárek et Hindák., Anabaenopsis arnoldii Aptekar, Anabaenopsis kelifii Kog. By combining molecular-biological and analytical methods and by using genetic markers when studying toxic «water blooms» the search of genes responsible for synthesis of hepatotoxic microcystin, nodularin, cylindrospermosin and neurotoxic saxitoxin was undertaken. Автор: Тамара Михайловна Михеева – доктор биологических наук, доцент; главный научный сотрудник научно-исследовательской лаборатории гидроэкологии
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