Columbia River White Sturgeon Genetics and Early Life History: Population Segregation and Juvenile Feeding Behavior, 1987 Final Report.

Technical Report · Wed Jun 01 04:00:00 EDT 1988

DOI:https://doi.org/10.2172/6783328· OSTI ID:6783328

Brannon, Ernest L

The geographic area of the genetics study broadly covered the distribution range of sturgeon in the Columbia from below Bonneville Dam at Ilwaco at Lake Roosevelt, the Upper Snake River, and the Kootenai River. The two remote river sections provided data important for enhancement considerations. There was little electrophoretic variation seen among individuals from the Kootenai River. Upper Snake river sturgeon showed a higher percentage of polymorphic loci than the Kootenai fish, but lower than the other areas in the Columbia River we sampled. Sample size was increased in both Lake Roosevelt and at Electrophoretic variation was specific to an individual sampling area in several cases and this shaped our conclusions. The 1987 early life history studies concentrated on the feeding behavior of juvenile sturgeon. The chemostimulant components in prey attractive to sturgeon were examined, and the sensory systems utilized by foraging sturgeon were determined under different environmental conditions. These results were discussed with regard to the environmental changes that have occurred in the Columbia River. Under present river conditions, the feeding mechanism of sturgeon is more restricted to certain prey types, and their feeding range may be limited. In these situations, enhancement measures cannot be undertaken without consideration given to the introduction of food resources that will be readily available under present conditions. 89 refs., 7 figs., 11 tabs.

• Research Organization: University of Washington.
• Sponsoring Organization: United States. Bonneville Power Administration.
• OSTI ID: 6783328
• Report Number(s): DOE/BP-18952-3; ON: DE89001540
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
130600* -- Hydro Energy-- Environmental Aspects
ANIMALS
AQUATIC ORGANISMS
BASELINE ECOLOGY
BIOLOGICAL VARIABILITY
BODY
COLUMBIA RIVER
DOCUMENT TYPES
ECOLOGY
ELECTRIC POWER
ELECTROPHORESIS
ENERGY SOURCES
EVALUATION
FEEDING
FISHES
GENETIC VARIABILITY
HYDROELECTRIC POWER
JUVENILES
LIFE CYCLE
MORPHOLOGY
ORGANS
POWER
PROGRESS REPORT
RENEWABLE ENERGY SOURCES
RIVERS
SENSE ORGANS
STREAMS
SURFACE WATERS
VERTEBRATES
White sturgeon fisheries - Columbia River