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Initial Assessment Of The Introduction Of Spottail Shiner (Notropis Hudsonius) And Delta Smelt (Hypomesus Transpacificus) Into Willard Bay Reservoir, Utah., Thomas E. Sommerfeldt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Spottail shiner (Notropis hudsonius) and delta smelt (Hypomesus transpacificus) were introduced into Willard Reservoir to improve the forage base for walleye (Stizostedion vitreum vitreum) and black crappie (Pomoxis nigromaculatus). Spottail shiners were stocked in early spring in 1981, 1982, and 1983. Hauling mortality was generally great and an estimated 34,500 live fish were stocked in the 3-year period. Spottail shiner reproduction occurred each year of stocking. Delta smelt were introduced in 1982 with the stocking of 15,000 adult spawning fish. Stocking survival was estimated at 99%. Freshly spawned eggs were also obtained …