Project: Dynamics of Whirling Disease on the Cache La Poudre River

Primary Investigator: Eric Bergersen
Project Summary: The Cache la Poudre River, part of which is managed for wild trout, has experienced a dramatic rainbow population decrease from whirling disease. The fine sediment deposits in pools and alcoves below and above the Poudre Rearing Unit, along with the earthen bottom ponds within the Unit, are infected. High densities of worms-particularly T. tubifex-are found in these areas, but are rare elsewhere. The most heavily infected fish (rainbows and browns) were collected directly below the Rearing Unit; high densities of TAMs have been filtered from its effluent; the daily cycle of TAMs found low densities during the day, higher at night, and peaking at 4 am; other reaches of the river have no TAMs.
Funding Period: 1997-1998
Final Report: Bergersen_97-98.pdf
Dataset(s) associated with this project:

There are no datasets associated with this project.