Publications
Juvenile Chinook salmon
Below is a list of available CRRL peer reviewed and published science.
Filter Total Items: 524
Predicted changes in subyearling fall Chinook salmon rearing and migratory habitat under two drawdown scenarios for John Day Reservoir, Columbia River
We evaluated the potential effects of two different drawdown scenarios on rearing and migration habitat of subyearling fall Chinook salmon Oncorhynchus tshawytscha in John Day Reservoir on the Columbia River. We compared habitats at normal operating pool elevation with habitats at drawdown to spillway crest elevation and drawdown to the historical natural river elevation for two flows (4,417 and 8
Authors
K.F. Tiffan, R.D. Garland, D.W. Rondorf
Food habits of Juvenile American Shad and dynamics of zooplankton in the lower Columbia River
As many as 2.4 million adult American shad annually pass John Day Dam, Columbia River to spawn upriver, yet food web interactions of juvenile shad rearing in John Day Reservoir are unexplored. We collected zooplankton and conducted mid-water trawls in McNary (June-July) and John Day reservoirs (August-November) from 1994 through 1996 during the outmigration of subyearling American shad and Chinook
Authors
C. A. Haskell, K.F. Tiffan, D.W. Rondorf
The effects of river impoundment and hatchery rearing on the migration behavior of juvenile steelhead in the Lower Snake River, Washington
We used radiotelemetry to monitor the migration behavior of juvenile hatchery and wild steelhead Oncorhynchus mykiss as they migrated through Lower Granite Reservoir and Dam on the lower Snake River, Washington. From 1996 to 2001, we surgically implanted radio transmitters in 1,540 hatchery steelhead and 1,346 wild steelhead. For analysis, we used the inverse Gaussian distribution to describe trav
Authors
J.M. Plumb, R.W. Perry, N.S. Adams, D.W. Rondorf
Comparison of synthesis of 15α-hydroxylated steroids in males of four North American lamprey species
Recent studies have provided evidence that 15α-hydroxytestosterone (15α-T) and 15α-hydroxyprogesterone (15α-P) are produced in vitro and in vivo in adult male sea lampreys (Petromyzonmarinus), and that circulatory levels increase in response to injections with gonadotropin-releasing hormone (GnRH). We examined four species from the Petromyzontidae family including silver lampreys (Ichthyomyzon uni
Authors
Mara B. Bryan, Bradley A. Young, David A. Close, Jesse Semeyn, T. Craig Robinson, Jennifer M. Bayer, Weiming Li
Effects of sediment cover on survival and development of white sturgeon embryos
A simple, inexpensive apparatus (embryo incubation unit [EIU]) was developed and used to assess the relationship between sediment cover (Kootenai River sediments, 97% by weight in the 0.83-mm- to 1.0-mm-diameter range) and survival of white sturgeon Acipenser transmontanus embryos in the laboratory. An apparatus-testing trial assessed the effects of two sediment depths (5 and 20 mm), three EIU ven
Authors
T.J. Kock, J.L. Congleton, P.J. Anders
Morphometric discrimination of early life stage Lampetra tridentata and L richardsoni (Petromyzonidae) from the Columbia river basin
The effectiveness of morphometric and meristic characteristics for taxonomic discrimination of Lampetra tridentata and L. richardsoni (Petromyzonidae) during embryological, prolarval, and early larval stages (i.e., age class 1) were examined. Mean chorion diameter increased with time from fertilization to hatch and was significantly greater for L. tridentata than for L. richardsoni at 1, 8, and 15
Authors
M.H. Meeuwig, J.M. Bayer, R.A. Reiche
Use of electromyogram telemetry to assess swimming activity of adult spring Chinook salmon migrating past a Columbia River dam
Electromyogram (EMG) radiotelemetry was used to estimate the swim speeds of spring Chinook salmon Oncorhynchus tshawytscha migrating upstream past a Columbia River dam. Electrodes from EMG transmitters were surgically implanted in the red muscle of fish captured at Bonneville Dam, and output from the tags was calibrated to defined swim speeds for each fish in a tunnel respirometer. The fish were t
Authors
R.S. Brown, D.R. Geist, M.G. Mesa
Fasting augments PCB impact on liver metabolism in anadromous Arctic Char
Anadromous arctic char (Salvelinus alpinus) undertake short feeding migrations to seawater every summer and accumulate lipids, while the rest of the year is spent in fresh water where the accumulated lipid reserves are mobilized. We tested the hypothesis that winter fasting and the associated polychlorinated biphenyls' (PCBs) redistribution from lipid depots to critical tissues impair the liver me
Authors
M.M. Vijayan, N. Aluru, A.G. Maule, E.H. Jorgensen
Passage behavior of radio-tagged subyearling Chinook salmon at Bonneville Dam, 2005
No abstract available
Authors
R.E. Reagan, M.J. Farley, S.D. Evans, L.S Wright, N.S. Adams, D.W. Rondorf
Survival estimates of migrant juvenile salmonids through The Dalles Dam using radio telemetry, 2005
No abstract available
Authors
T. Counihan, A. Puls, C. Walker, G. Holmberg
Assess current and potential salmonid production in Rattlesnake Creek associated with restoration efforts
No abstract available
Authors
M.B. Allen, P.J. Connolly
Crims Island habitat restoration in the Columbia River estuary-fisheries monitoring and evaluation, 2004
No abstract available
Authors
C. A. Haskell, K.F. Tiffan, R.C. Koch, D.W. Rondorf