Threadfin shad impingement: effect of cold stress. Report to the Nuclear Regulatory Commission for period October 1, 1976-September 30, 1978
Temperature greatly influenced impingement of threadfin shad, young-of-the-year gizzard shad, and probably young-of-the-year river herring. Temperature also greatly influenced any potential effects that loss of these prey had on predators. Natural cold kills of threadfin and young-of-the-year gizzard shad masked any ecological effects due to impingement. Most of the shad, had they not been impinged, would have died due to cold stress, and these dead shad would have decomposed rather than been eaten by scavengers. Loss of shad had a measurable short-term effect on sauger, as determined by changes in condition factor, and this loss of shad contributed to an increase in percent empty stomachs of skipjack herring, striped bass, and white bass. Thermal refuges, including the Kingston Steam Plant discharge, were identified for gizzard shad and hybrid shad. Hybrid shad made up 11.2% of the total threadfin population sampled both years (1976-1977 and 1977-1978). Blood serum electrolytes (Na/sup +/, K/sup +/, Cl/sup -/) were not found to be good predictable indicators of cold stress of young gizzard shad. 24 refs., 23 figs., 18 tabs.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5227586
- Report Number(s):
- NUREG/CR-1044; ORNL/NUREG/TM-340; ON: TI86000153
- Resource Relation:
- Other Information: Environmental Sciences Division Publication No. 1495
- Country of Publication:
- United States
- Language:
- English
Similar Records
Aspects of the winter predator--prey relationship between sauger and threadfin shad in Watts Bar Reservoir, Tennessee
Prey selection by sauger in Watts Bar Reservoir, Tennessee, as affected by cold-induced mortality of threadfin shad
Related Subjects
20 FOSSIL-FUELED POWER PLANTS
FISHES
PREDATOR-PREY INTERACTIONS
IMPINGEMENT
ENVIRONMENTAL IMPACTS
THERMAL EFFLUENTS
BLOOD CHEMISTRY
EXPERIMENTAL DATA
KINGSTON STEAM PLANT
POPULATION DYNAMICS
SEASONAL VARIATIONS
ANIMALS
AQUATIC ORGANISMS
DATA
FOSSIL-FUEL POWER PLANTS
INFORMATION
NUMERICAL DATA
POWER PLANTS
THERMAL POWER PLANTS
VARIATIONS
VERTEBRATES
560205* - Thermal Effects- Vertebrates- (-1987)
200200 - Fossil-Fueled Power Plants- Waste Management