Date of Award:
Master of Science (MS)
Department name when degree awarded
Clair B. Stalnaker
The level of stress imposed by population pressure, handling and live transportation on planted catchable-sized rainbow trout in a northern Utah stream was examined. Production of adrenocorticotrophin, as measured by interrenal ascorbic acid and serum cortisol levels, did not occur in transported or planted fish.
Dead or moribund fish collected from stream or live boxes comprised 13 percent of the 2,000 fish planted. Aeromonas salmonicida, the causative agent of furunculosis, was isolated from 41 percent of 106 moribund fish sampled. In addition, 39 percent of the samples exhibited bacterial growth other than A. salmonicida. Apparently, handling, transportation, and planting did cause low levels of stress sufficient enough to induce stress-mediated diseases such as furunculosis.
Gresswell, Robert Earl, "An Evaluation of Stress Induced Mortality of Stocked Catchable-Sized Rainbow Trout in Temple Fork of the Logan River" (1973). All Graduate Theses and Dissertations. 4108.