Preliminary examination of oxidative stress in juvenile spring Chinook salmon Oncorhynchus tshawytscha of wild origin sampled from transport barges.
Migrating juvenile wild Chinook salmon Oncorhynchus tshawytscha, collected and loaded onto transport barges at Lower Granite Dam on the Snake River, were sampled from barges at John Day Dam, 348 km downstream, at 5 day intervals beginning in late April and ending in late May. An increase in lipid peroxidation and decrease in vitamin E in liver were observed from early to late in the barge transportation season. These changes seemed unrelated to changes in plasma cortisol or corresponding glucose levels, which declined from early to late in the season, or the concentration of n-3 highly unsaturated fatty acid (HUFA) concentrations in tissue but may be related to water temperature, which increased during the transport season, or other changes associated with the parr-smolt transformation.
Welker
T L
TL
Aquatic Animal Health Research Laboratory, Agricultural Research Service, United States Department of Agriculture, Auburn, AL 36832-0952, USA. thomas.welker@ars.usda.gov
Congleton
J L
JL
D025041:Animal Migration / Q000502:physiology; D000818:Animals; D000835:Animals, Wild / Q000502:physiology*; D001786:Blood Glucose / Q000032:analysis; D005398:Fisheries / Q000379:methods*; D006854:Hydrocortisone / Q000097:blood; D007668:Kidney / Q000378:metabolism; D015227:Lipid Peroxidation / Q000502:physiology; D008099:Liver / Q000378:metabolism; D018384:Oxidative Stress / Q000502:physiology*; D012474:Salmon / Q000502:physiology*; D012767:Ships; D013696:Temperature; D014810:Vitamin E / Q000378:metabolism
D001786:Blood Glucose; D014810:Vitamin E; D006854:Hydrocortisone