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Resource waves: phenological diversity enhances foraging opportunities for mobile consumers

Creator:: Armstrong, Jonathan B., Takimoto, Gaku, Schindler, Daniel E., Hayes, Matthew M., and Kauffman, Matthew J.
Abstract:: Time can be a limiting constraint for consumers, particularly when resource phenology mediates foraging opportunity. Though a large body of research has explored how resource phenology influences trophic interactions, this work has focused on the topics of trophic mismatch or predator swamping, which typically occur over short periods, at small...
Resource Type:: Article
Full Text:: 1099 IntroductIon A basic goal of ecology is to understand how the abundance of different resources

Effects of Low-Density Feeding on Elk-Fetus Contact Rates on Wyoming Feedgrounds

Creator:: Creech, Tyler G., Cross, Paul C., Scurlock, Brandon M., Maichak, Eric J., Rogerson, Jared D., Henningsen, John C., and Creel, Scott
Abstract:: High seroprevalance for Brucella abortus among elk on Wyoming feedgrounds suggests that supplemental feeding may influence parasite transmission and disease dynamics by altering the rate at which elk contact infectious materials in their environment. We used proximity loggers and video cameras to estimate rates of elk-to-fetus contact (the primary source...
Resource Type:: Article
Full Text:: , USA JOHN C. HENNINGSEN, Wyoming Game and Fish Department, 420 N Cache Drive, Jackson, WY 83001, USA

Effects of steelhead trout (Oncorhynchus mykiss) on chinook salmon (O. tshawytscha) behavior and physiology

Creator:: Kelsey, Denise A.
Abstract:: Three experiments were designed to determine if and how steelhead trout, Oncorhynchus mykiss, may affect chinook salmon, O. tshawytscha, when they are confined together as in a raceway or on a barge. We observed groups of chinook and steelhead together and groups of only chinook in a behavioral experiment to...
Resource Type:: Masters Thesis
Full Text:: chinook salmon behavior and physiology. ©Copyright by Denise A. Kelsey April 29, 1997 All Rights

Ecology of harlequin ducks in Prince William Sound, Alaska, during summer

Creator:: Dzinbal, Kenneth A.
Abstract:: Harlequin ducks (Histrionicus histrionicus) were observed during the summers of 1979 and 1980 in Sawmill Bay, northeast Prince William Sound, Alaska. Harlequins were associated with a short, medium gradient, non-glacial stream (Stellar Creek) also used by salmon. Although harlequins nested along Stellar Creek, they apparently did not establish home ranges...
Resource Type:: Masters Thesis
Full Text:: , during summer AN ABSTRACT OF THE TFESIS CF Kenneth A. Dzinbal for the degree of Master of Science in

Comparative behavior of the progeny of hatchery and wild steelhead trout (Salmo gairdneri)

Creator:: Bieber, Glen F.
Abstract:: The objectives of this study were to determine whether changes in the selective pressures which occur in a hatchery could cause inherited modifications in the behavior of steelhead trout (Salmo gairdneri) that would affect their survival in the wild. Environmental effects on the behavior of the offspring of hatchery and...
Resource Type:: Masters Thesis
Full Text:: , 1969). 29 Exposure to a hatchery environment may condition hatchery-reared steelhead trout to be

The heritability of resistance to gas bubble disease of Columbia River fall Chinook salmon, (Oncorhynchus tshawytscha)

Creator:: Cramer, Steven P.
Abstract:: A nested mating experiment in which 20 males were each mated to four different females was used to obtain an estimate of the heritability of resistance to death from gas bubble disease in Columbia River fall chinook salmon (Oncorhynchus tshawytscha). Heritability estimates ranged from 0. 037 to 0. 038. Bioassays...
Resource Type:: Masters Thesis
Full Text:: SALMON Oncorhynchus tshawytscha Abstract approved: Dr. John D. McIntye A nested mating experiment in

Genetic aspects of lead toxicity in laboratory populations of guppies (Poecilia reticulata)

Creator:: Burger, Carl V.
Abstract:: The heritability of resistance to death from the effects of lead in laboratory guppy populations was determined from comparisons between progeny produced in a nested breeding experiment and from mass selection experiments. Resistance was measured by the time to death. Heritabilities of resistance to lead were estimated to be 0.26...
Resource Type:: Masters Thesis
Full Text:: 1j.g/gm Pb concentrated by five fish. 27 2 2 E 0) a) 0 I- a- a)o 3 0 U 0 a) 0 a- 20 I- 2C

Myxosporidans of rainbow and cutthroat trout broodstocks from Oregon hatcheries

Creator:: Sweet, Diane Ruth
Abstract:: Oregon Department of Fish and Wildlife trout broodstocks from Alsea, Cole Rivers, Klamath, Leaburg, Oak Springs, Roaring River and Willamette Fish Hatcheries were examined for the presence of myxosporidans. Wild fish collected from waters above these hatcheries were also examined. Seven species of myxosporidans were observed in the hatchery broodfish:...
Resource Type:: Masters Thesis
Full Text:: measured 37 pm in length are seen in Figure 2C. A spore which may represent the infective stage of C

Factors influencing the life history of spring chinook salmon (Oncorhynchus tshawytscha) spawning in the Columbia River watershed from 1960 to 1977

Creator:: Barton, Anne Christine Kristiansson
Resource Type:: Dissertation
Full Text:: 1963 brood year (Fig. 5). The 1963 - 2C c'J0 C') z a:: 15 I- IiJ Iii >- [. r:. I0 5 62 63

Extent of DNA homology in some distantly and intimately related fishes

Creator:: Gharrett, Anthony John
Abstract:: An attempt was made to differentiate between runs of steelhead by comparing the reassociations of their DNA. Conditions for the reassociation were studied using E. coli DNA, and observations were made spectrophotometrically. Of the five buffers examined, 1.0 molar sodium perchlorate plus one-hundredth molar tris-HCl, pH 7.1, at 60° or...
Resource Type:: Masters Thesis
Full Text:: and Intimately Related Fishes by Anthony John Gharrett A THESIS submitted to Oregon State

ScholarsArchive@OSU

Resource waves: phenological diversity enhances foraging opportunities for mobile consumers

Effects of Low-Density Feeding on Elk-Fetus Contact Rates on Wyoming Feedgrounds

Effects of steelhead trout (Oncorhynchus mykiss) on chinook salmon (O. tshawytscha) behavior and physiology

Ecology of harlequin ducks in Prince William Sound, Alaska, during summer

Comparative behavior of the progeny of hatchery and wild steelhead trout (Salmo gairdneri)

The heritability of resistance to gas bubble disease of Columbia River fall Chinook salmon, (Oncorhynchus tshawytscha)

Genetic aspects of lead toxicity in laboratory populations of guppies (Poecilia reticulata)

Myxosporidans of rainbow and cutthroat trout broodstocks from Oregon hatcheries

Factors influencing the life history of spring chinook salmon (Oncorhynchus tshawytscha) spawning in the Columbia River watershed from 1960 to 1977

Extent of DNA homology in some distantly and intimately related fishes

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