Research examines viruses that infect microalgae in Lake Winnipeg

A University of Winnipeg team is sequencing viruses that infect microalgae in Lake Winnipeg; analysis is ongoing and initial results show diverse viruses including larger "giant viruses".

A University of Winnipeg researcher is leading a first-of-its-kind study of viruses that infect microalgae in Lake Winnipeg. The lake is one of Canada's largest freshwater bodies and has experienced declining health linked to nutrient inputs across its large drainage basin. Over the last year the team collected and filtered water samples and is conducting metagenomic sequencing to identify viruses and microbes. Analysis and sequencing are currently underway. What researchers report: - Researchers collected water samples from Lake Winnipeg over the last year. - Samples were filtered to isolate viruses and microbes and are being analyzed by metagenomic sequencing. - Preliminary findings include diverse viruses, including a physically larger "giant virus" with a larger genome. - Microalgae can be infected by viruses; these infections can affect lake ecosystem balance but are not reported to threaten human health. - Local residents have reported heavier algal growth and expressed concern about potential impacts on fisheries and the regional economy. Summary: The study aims to improve understanding of how viruses interact with microalgae and influence Lake Winnipeg's ecology. Analysis and sequencing are ongoing and the research team expects to share results in the near future.