CSI Cheesman: The mystery of the missing shrimp

Mile High Water Talk

Introduced in 1971 to boost the fish population, the shrimp appear to have vanished. And that might be a good thing.

Galloway collects eDNA from Cheesman Reservoir Ben Galloway prepares test equipment to collect eDNA, genetic markers in the shrimp’s DNA, from sediment in Cheesman Reservoir.

By Tyler St. John

What happened to the shrimp?

In August, four researchers played detective on the waters of Cheesman Reservoir, dunking tubes, nets and various sensors below the surface and pulling up mud and algae. The team, from the Fisheries Ecology Laboratory at Colorado State University, was investigating the mysterious disappearance of the Mysis shrimp.

The shrimp are considered an invasive species in Colorado. First introduced into Kootenay Lake in British Columbia in 1949, the little creatures actually boosted the native fish population. The experiment was so successful that the shrimp were introduced to upwards of 400 more lakes in the world, including Cheesman Reservoir in…

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