The environment under which fish are maintained as broodstock before
reproduction is often stressful; however, the impact of stress on broodstock and gamete
quality is not well known. We investigated the effects of stress over the final stages (i.e.
the 3 months preceding ovulation) of sexual maturation of female rainbow...
The central purpose of this comparison was to determine the congruence
or difference between two teaching techniques, the programmed
multimedia approach and the traditional teaching method as used in presenting
drug information to eighth grade students in the Mankato,
Minnesota school district. The population sample consisted of 391
students enrolled...
The study was undertaken to determine if the construct and vocabulary
of systems theory are related to academic performance such that
a) the understanding of either or both can predict grade-point average
for college students, and b) the explicit teaching of both construct
and vocabulary to minority students can improve...
The western purple martin (Progne subis arboricola) is a species of conservation concern throughout the Pacific Northwest. In western Oregon, the purple martin nests in three major ecosystem types: inland open-water, coastal, and upland forest. The availability of suitable breeding habitat is a major limiting factor for western purple martin...
Pacific lamprey (Entosphenus tridentatus) are experiencing population declines throughout their range. Xenobiotics could be an important risk factor for lamprey populations. Our goal was to establish if common herbicides, as used in forest management, could affect reproductive fitness. We determined that atrazine was a likely compound of greatest concern to...
The purpose of this thesis is to examine gender and historical bias in wind band music and related practices in the Pacific Northwest. This research was conducted via an IRB approved research study, Equity and Gender Bias in High School Music Programming in the Pacific Northwest: A Case Study, which...
Juvenile Chinook salmon (Oncorhynchus tshawytscha) exhibit an array of life history tactics in Oregon's Willamette River Basin, yet we do not know to what extent it is driven by phenotypic plasticity or whether it is predetermined and how conditions in the early rearing environment may affect phenotype expression. We have...
The importance of hormone reservoirs in mature teleost eggs is
unknown. To elucidate the effects of hormones on embryonic development,
steelhead trout eggs, Oncorhynchus mykiss, were immersed in either cortisol,
testosterone, or thyroxine at two different stages of development. Elevated
concentrations of cortisol were detectable in the trout eggs or...