Microbial Communities Associated with Bentic Invertebrates of Lake Baikal

The first results of a study into the microbiomes of benthic invertebrates found in sites with seeps (containing methane, oil, or a combination of methane and mud) and an underwater low-temperature vent of Lake Baikal are presented. Microorganisms were detected in the intestine of an oligochaete fro...

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Bibliographic Details
Published in:Current microbiology 2021-08, Vol.78 (8), p.3020-3031
Main Authors: Chernitsyna, Svetlana M., Khalzov, Ivan A., Sitnikova, Tatyana Ya, Naumova, Tatyana V., Khabuev, Andrey V., Zemskaya, Tamara I.
Format: Article
Language:English
Subjects:
Benthic fauna
Biomedical and Life Sciences
Biotechnology
Gene libraries
Insects
Intestine
Invertebrates
Lake sediments
Lakes
Life Sciences
Low temperature
Methane
Methanogenic bacteria
Methanotrophic bacteria
Microbial activity
Microbiology
Microbiomes
Microorganisms
Nematodes
Prokaryotes
rRNA 16S
Sediments
Sulfur
Sulfur cycle
Underwater
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Summary:The first results of a study into the microbiomes of benthic invertebrates found in sites with seeps (containing methane, oil, or a combination of methane and mud) and an underwater low-temperature vent of Lake Baikal are presented. Microorganisms were detected in the intestine of an oligochaete from the cold methane seep using microscopy. Analysis of 16S rRNA gene libraries revealed that the highest diversity of microorganisms was found in the nematode microbiomes where the members of 11 phyla were identified. Some of the detected prokaryotes are methanogens, nitrifiers, and nitrogen fixators, while some are involved in the sulfur cycle. Methanotrophs were detected in the microbiomes of oligochaetes and chironomids. The microbiomes of nematodes, chironomids, and bathynellids are composed of members of the Bacteroidetes and Firmicutes phyla, which are related to the symbiotic bacteria found in insects and animals from other ecotopes. Microorganisms typically found in the water and sediments of Lake Baikal were also detected in the invertebrates microbiomes.
ISSN:0343-8651
1432-0991
DOI:10.1007/s00284-021-02563-0