This document summarizes the 1966-67 winter steelhead fisheries on the Alsea and Wilson Rivers, and describes the effects of the three-fish bag limit on total harvest on the Wilson River.
Numerous natural and anthropogenic chemicals interact with endocrine systems of
animals. The most widely studied of these endocrine active chemicals (EACs) are
estrogen receptor agonists and antagonists. Because of the many important roles of
estrogens in animals, xenoestrogens have the potential to impact environmental health. It
has been proposed that...
Snorkel dive estimates and an inventory of stream habitat of the juvenile steelhead (Oncorhynchus mykiss) population in the Steamboat Creek basin were made in the summers of 1987 and 1988. Emigration was
monitored by fish trapping from spring through fall of 1988. Distribution, abundance, and habitat utilization of juvenile steelhead...
This report the sizes for winter steelhead runs of the Willamette River and many of its tributaries from 1958-69, giving numbers and suggesting possible reasons for small runs.
Developing steelhead trout eggs and sac fry were examined for
wet, dry and lipid weights and for fatty acid composition over the
period from fertilization until the disappearance of the yolk sac, 69
days after fertilization. The yolk sac and embryo or fry were
separated shortly before hatching, and the...
Juvenile steelhead are known to associate with shiner groups, though they also compete for food. Steelhead form dominance hierarchies within cohorts and aggressively defend feeding territories against all other fish. This study focused on the differential effect of shiner competition on steelhead of different social standing.
Survival of subordinate juvenile...
The present study investigated the effects of stress and exercise on seawater (SW) adaptation and cortisol dynamics in juvenile steelhead (Oncorhynchus mykiss). To examine the effects of stress, fish acclimated to freshwater (FW) were subjected for 3 hours to confinement stress in FW, and subsequently SW (25 ppt) was introduced...
"This workshop was held to allow both research and management fish biologists to openly discuss the results of several ongoing projects designed to improve the way Oregon manages its steelhead populations." (from the Introduction) The report uses an extended abstract format.