Northern Pike Minnow Predation and Movement
Population Estimate Methodology Change
What factors can effect recapture and capture for population estimate?
Environmental and Biological Factors in Spring include:
Comparison of current water year with previous and average water years at Parker.
River Flow at Parker dam (Sunnyside dam)
Removal of stomach for analysis
Removal and storage of stomach contents.
Analysis of contents via stained hard structures
Tag methodology: External attachment of tag on left side of dorsal fin
Tag is anchored on right side of fish with a plastic saddle
The end result- tag lies on the side of the dorsal resulting in minimal damage to the fish