Index Catalog // ScholarsArchive@OSU

The Gill Pathogen Dermocystidium salmonis in Oregon Salmonids

Creator:: Olson, Robert E. and Holt, Richard A.
Abstract:: Intense infections of the gill pathogen Dermocystidium salmonis were associated with mortality of prespawning chinook salmon Oncorhynchus tshawytscha in several Oregon rivers in 1988. The occurrence of the pathogen in returning adult chinook salmon was monitored in several coastal Oregon stocks from 1989 to 1993. Although the prevalence of the...
Resource Type:: Article
Full Text:: /uahh20 The Gill Pathogen Dermocystidium salmonis in Oregon Salmonids Robert E. Olson a & Richard A. Holt

Juvenile Salmonid Use of Freshwater Emergent Wetlands in the Floodplain and Its Implications for Conservation Management

Creator:: Henning, Julie A., Gresswell, Robert E., and Fleming, Ian A.
Abstract:: A recent trend of enhancing freshwater emergent wetlands for waterfowl and other wildlife has raised concern about the effects of such measures on juvenile salmonids. We undertook this study to quantify the degree and extent of juvenile Pacific salmon Oncorhynchus spp. utilization of enhanced and unenhanced emergent wetlands within the...
Resource Type:: Article
Full Text:: Julie A. Henning a , Robert E. Gresswell b & Ian A. Fleming a a Department of Fisheries and Wildlife

Cold front induced changes on the Florida panhandle shelf during October 2008

Creator:: Kamykowski, D., Morrison, J. M., McCulloch, A. A., Nyadjro, E. S., Thomas, C. A., Sinclair, G. A., and Grabowski Pridgen, K.
Abstract:: A significant step transition between seasonally stratified and destratified hydrographic conditions occurred during an October 2008 cruise to the Florida Panhandle Shelf along a cross-shelf transect that was sampled before and after a cold front passed through the area. Meteorological measurements from nearby ocean and land-based stations characterized the event....
Resource Type:: Article
Full Text:: . McCulloch d, E.S. Nyadjro e, C.A. Thomas a, G.A. Sinclair f a Marine, Earth & Atmospheric Sciences, North

Bayesian hierarchical modeling of Pacific geoduck growth increment data and climate indices

Creator:: Helser, Thomas E., Lai, Han-lin, and Black, Bryan A.
Abstract:: Growth increment widths from hard structures of marine and freshwater fish and bivalve species are increasingly used to model growth and elucidate relationships with environmental variability. Fully characterizing the intrinsic age-related growth variation among individuals within and between populations, while estimating the extrinsic environmental effects simultaneously, can be challenging. Using...
Resource Type:: Article
Full Text:: H N 1 t e i d f p o 1 e a 1 b ( 0 h Ecological Modelling 247 (2012) 210– 220 Contents lists

Integrating fish and parasite data as a holistic solution for identifying the elusive stock structure of Pacific sardines (Sardinops sagax)

Creator:: Baldwin, Rebecca E. B., Banks, Michael A., and Jacobson, Kym C.
Abstract:: There is an urgent need to clarify how different stocks, or subpopulations of fish species, are vulnerable to fishing pressure and unfavorable ocean conditions because of the increasing demand on fisheries for human consumption. For marine fishes, the potential for high gene flow increases the difficulty in determining the number...
Resource Type:: Article
Full Text:: ) Rebecca E. Baldwin • Michael A. Banks • Kym C. Jacobson Received: 20 December 2010 / Accepted: 9 June

Biological indicators of the timing and direction of warm-water advection during the 1997/1998 El Niño off the central Oregon coast, USA

Creator:: Keister, Julie E., Johnson, Travis B., Morgan, Cheryl A., and Peterson, William T.
Abstract:: Unusual collections of several euphausiid, chaetognath, and copepod species help elucidate the effects of the strong 1997/1998 El Niño off the central Oregon, USA, coast. Furcilia of Nyctiphanes simplex, a euphausiid typically found only as far north as central California, were collected in bi-weekly nearshore samples between December 1997 and...
Resource Type:: Article
Full Text:: Kelvin waves, which result in a strong poleward flow of water over the continental shelf. Poleward

Prospects for Recovering Endemic Fishes Pursuant to the U.S. Endangered Species Act

Creator:: Williams, Jack E., Macdonald, Catherine A., Williams, Cindy Deacon, Weeks, Hal, Lampman, Georgina, and Sada, Don W.
Abstract:: If the success of the Endangered Species Act (ESA) is measured by the number of endangered species that have been recovered and delisted, then the act is not very successful. Only 15 species have been delisted because of recovery in the history of the ESA. The Borax Lake chub (Gila...
Resource Type:: Article
Full Text:: more appropriate measure of ESA success for such species. Jack E. Williams Catherine A. Macdonald

Diel Feeding Chronology, Gastric Evacuation, and Daily Food Consumption of Juvenile Chinook Salmon in Oregon Coastal Waters

Creator:: Benkwitt, Cassandra E., Brodeur, Richard D., Hurst, Thomas P., and Daly, Elizabeth A.
Abstract:: The diel feeding periodicity of juvenile Chinook salmon Oncorhynchus tshawytscha was determined from stomachs collected in coastal waters off Oregon in 2000 and 2003. Juvenile Chinook salmon exhibited a diurnal feeding pattern with morning and evening feeding periods. There were differences in the duration and magnitude of the dawn and...
Resource Type:: Article
Full Text:: Waters Cassandra E. Benkwitt a , Richard D. Brodeur b , Thomas P. Hurst c & Elizabeth A. Daly d a

A doubled down invasion of the northeast Pacific by the Asian mud shrimp, Upogebia major and its coevolved bopyrid isopod parasite, Orthione griffenis

Creator:: Chapman, John W., Li, Jingchun, McGowan, Michael F., Breitenstein, Ralph A., Appy, Ralph, Hieb, Kathryn A., Piotrowski, Christina N., and Elder, Leanne E.
Abstract:: Dramatic declines of the native northeast Pacific mud shrimp, Upogebia pugettensis over the last three decades have occurred in response to intense infestations by the Asian bopyrid isopod parasite, Orthione griffenis, that was introduced in the 1980s. We report herein the arrival of the Asian mud shrimp, Upogebia major, in...
Resource Type:: Article
Full Text:: public outreach. Photos in the amended key are from a Canon 5D camera focused through an MP-E 65 mm

Survey of Pathogens in Hatchery Chinook Salmon with Different Out-Migration Histories through the Snake and Columbia Rivers

Creator:: Van Gaest, Ahna L., Dietrich, Joseph P., Thompson, D. E., Boylen, Deborah A., Strickland, Stacy A., Collier, T. K., Loge, F. J., and Arkoosh, Mary R.
Abstract:: The operation of the Federal Columbia River Power System (FCRPS) has negatively affected threatened and endangered salmonid populations in the Pacific Northwest. Barging Snake River spring Chinook salmon Oncorhynchus tshawytscha through the FCRPS is one effort to mitigate the effect of the hydrosystem on juvenile salmon out-migration. However, little is...
Resource Type:: Article
Full Text:: Rivers A. L. Van Gaest a , J. P. Dietrich a , D. E. Thompson b , D. A. Boylen a , S. A. Strickland a , T

ScholarsArchive@OSU

The Gill Pathogen Dermocystidium salmonis in Oregon Salmonids

Juvenile Salmonid Use of Freshwater Emergent Wetlands in the Floodplain and Its Implications for Conservation Management

Cold front induced changes on the Florida panhandle shelf during October 2008

Bayesian hierarchical modeling of Pacific geoduck growth increment data and climate indices

Integrating fish and parasite data as a holistic solution for identifying the elusive stock structure of Pacific sardines (Sardinops sagax)

Biological indicators of the timing and direction of warm-water advection during the 1997/1998 El Niño off the central Oregon coast, USA

Prospects for Recovering Endemic Fishes Pursuant to the U.S. Endangered Species Act

Diel Feeding Chronology, Gastric Evacuation, and Daily Food Consumption of Juvenile Chinook Salmon in Oregon Coastal Waters

A doubled down invasion of the northeast Pacific by the Asian mud shrimp, Upogebia major and its coevolved bopyrid isopod parasite, Orthione griffenis

Survey of Pathogens in Hatchery Chinook Salmon with Different Out-Migration Histories through the Snake and Columbia Rivers

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