Cooperative Fish and Wildlife Research Units Program: Wisconsin Fishery
Education, Research and Technical Assistance for Managing Our Natural Resources

Wisconsin Fishery Project

Developing a DNA-based tool to estimate the number of salmon consumed by piscivores in the Sacramento Delta

August 2019 - September 2020


Participating Agencies

  • US Geological Survey Pacific Region

Predation is a major source of mortality for salmonids out-migrating from the Sacramento River. Here, we are using a newly developed tool (DNA mixtures) to estimate the number of salmon that are consumed by piscivores as they exit the river. This project is a collaboration between USGS offices in Wisconsin and California. The results will be used to better estimate predation, which will inform salmon management in the Sacramento River.