I recommend you, or anyone on the server with similar interests, contact
Dr. Bob Wolfe, Alaska Department of Fish and Game, at 907-465-4148.  Back
in the early 1980's Bob worked on the lower Yukon River, collecting data
on things such as the subsistence harvest of lamprey.  He collected data
on most species harvested for subsistence purposes throughout the state.

Best regards,
Brian Bigler
Seattle, Washington
         USA