Index Catalog // ScholarsArchive@OSU

A comparison of the survival and migratory behavior of hatchery-reared and naturally reared steelhead smolts in the Alsea River and estuary, Oregon, using acoustic telemetry

Creator:: Johnson, Steven L., Power, James Harry, Wilson, Derek R., and Ray, James
Abstract:: We tracked three groups of steelhead Oncorhynchus mykiss smolts implanted with acoustic transmitters to determine whether the degree of hatchery domestication or the juvenile rearing environment (hatchery raceway versus natural stream) influenced migration timing and survival in the Alsea River and estuary, Oregon. Two groups consisted of age-1 smolts reared...
Resource Type:: Article
Full Text:: Telemetry Steven L. Johnson a , James Harry Power b , Derek R. Wilson c & James Ray c a Oregon Department of

Tag Location and Retention in Black Rockfish: Feasibility of Using PIT Tags in a Wild Marine Species

Creator:: Parker, Steven J. and Rankin, Polly S.
Abstract:: Tag and recovery programs can provide valuable information on population size and exploitation rates in fishes. Passive integrated transponder (PIT) tags are ideal for use in such programs because they provide identification of individual fish and are invisible to anglers, circumventing problems with nonreporting of tags. Our objective was to...
Resource Type:: Article
Full Text:: Black Rockfish: Feasibility of Using PIT Tags in a Wild Marine Species Steven J. Parker a & Polly S

Fish Size and Exposure to Air: Potential Effects on Behavioral Impairment and Mortality Rates in Discarded Sablefish

Creator:: Davis, Michael W. and Parker, Steven J.
Abstract:: Fisheries models often assume that discarded undersized fish and target species will survive and contribute to future recruitment and yield. If smaller fish are more susceptible to capture stressors than larger fish, then the assumption that smaller discards would contribute to recruitment may not be true. We tested the hypothesis...
Resource Type:: Article
Full Text:: Michael W. Davis a & Steven J. Parker b a Alaska Fisheries Science Center, National Oceanic and

Buoyancy regulation and barotrauma in two species of nearshore rockfish

Creator:: Parker, Steven J., McElderry, Howard I., Rankin, Polly S., and Hannah, Robert W.
Abstract:: Fishes with closed swim bladders regulate buoyancy during depth changes by secreting and resorbing swim bladder gases. Forced ascent during fishery capture results in barotrauma caused by rapid expansion and exsolution of gases from body fluids. Pressure changes in hyperbaric chambers were used to examine changes in swim bladder integrity...
Resource Type:: Article
Full Text:: ://www.tandfonline.com/loi/utaf20 Buoyancy Regulation and Barotrauma in Two Species of Nearshore Rockfish Steven J

Escaping the Surface: The Effect of Capture Depth on Submergence Success of Surface-Released Pacific Rockfish

Creator:: Hannah, Robert W., Parker, Steven J., and Matteson, Keith M.
Abstract:: We evaluated the effect of capture depth and fish size on the ability of several Pacific rockfishes Sebastes spp. to resubmerge after hook-and-line capture and surface release. We observed fish as they were released into a bottomless floating enclosure, and we recorded submergence success within a 5-min time limit. Submergence...
Resource Type:: Article
Full Text:: . Hannah a , Steven J. Parker b & Keith M. Matteson c a Oregon Department of Fish and Wildlife, Marine

Evaluation of a Selective Flatfish Trawl and Diel Variation in Rockfish Catchability as Bycatch Reduction Tools in the Deepwater Complex Fishery off the U.S. West Coast

Creator:: Hannah, Robert W., Parker, Steven J., and Buell, Troy V.
Abstract:: We tested the potential of a selective flatfish trawl to reduce bycatch of slope rockfish in the upper continental slope bottom-trawl fishery (250–500 m) on the U.S. West Coast. The trawl we tested differed from typical slope trawls in that it was a low-rise, two-seam trawl with a severely cut...
Resource Type:: Article
Full Text:: a , Steven J. Parker a & Troy V. Buell a a Oregon Department of Fish and Wildlife, Marine Resources

Discard Mortality of Trawl-Caught Lingcod in Relation to Tow Duration and Time on Deck

Creator:: Parker, Steven J., Rankin, Polly S., Hannah, Robert W., and Schreck, Carl B.
Abstract:: The lingcod Ophiodon elongatus is a benthic marine fish commonly caught by groundfish trawlers and discarded due to low catch limits. Managers must account for the mortality of bycatch to assess population status accurately. Our objectives were to estimate the actual mortality of trawl-discarded lingcod (50- 84 cm) and describe...
Resource Type:: Article
Full Text:: Tow Duration and Time on Deck Steven J. Parker a , Polly S. Rankin a , Robert W. Hannah a & Carl B

The response to forced decompression in six species of Pacific rockfish

Creator:: Pribyl, Alena L., Kent, Michael L., Parker, Steven J., and Schreck, Carl B.
Abstract:: Pacific rockfish experience high discard mortality when captured owing to a condition called barotrauma,which is caused by the change in pressure during capture. This condition appears to be species specific at the macroscopic level; however, little is known about the microscopic tissue-level effects of barotrauma. Determining whether tissue-level injuries are...
Resource Type:: Article
Full Text:: . Pribyl a b , Michael L. Kent c , Steven J. Parker d e & Carl B. Schreck f a Oregon Cooperative Fish and

Characterization of the physiological stress response in lingcod

Creator:: Milston, Ruth H., Davis, Michael W., Parker, Steven J., Olla, Bori L., Clements, Shaun, and Schreck, Carl B.
Abstract:: The goal of this study was to describe the duration and magnitude of the physiological stress response in lingcod Ophiodon elongatus after exposure to brief handling and sublethal air stressors. The response to these stressors was determined during a 24‐h recovery period by measuring concentrations of plasma cortisol, lactate, glucose,...
Resource Type:: Article
Full Text:: , Hatfield Marine Science Center, 2030 Southeast Marine Science Drive, Newport, Oregon 97365, USA STEVEN J

Linking predators to seasonality of upwelling: Using food web indicators and path analysis to infer trophic connections

Creator:: Thompson, Sarah Ann, Sydeman, William J., Santora, Jarrod A., Black, Bryan A., Suryan, Robert M., Calambokidis, John, Peterson, William T., and Bograd, Steven J.
Abstract:: Upwelling in eastern boundary current systems is a primary driver of ecosystem productivity. Typically, peak upwelling occurs during spring and summer, but winter upwelling may also be important to ecosystem functions. In this study, we investigated the hypothesis that winter and spring/summer upwelling, operating through indirect trophic interactions, are important...
Resource Type:: Article
Full Text:: , William T. Peterson d, Steven J. Bograd e a Farallon Institute for Advanced Ecosystem Research, P.O. Box

ScholarsArchive@OSU

A comparison of the survival and migratory behavior of hatchery-reared and naturally reared steelhead smolts in the Alsea River and estuary, Oregon, using acoustic telemetry

Tag Location and Retention in Black Rockfish: Feasibility of Using PIT Tags in a Wild Marine Species

Fish Size and Exposure to Air: Potential Effects on Behavioral Impairment and Mortality Rates in Discarded Sablefish

Buoyancy regulation and barotrauma in two species of nearshore rockfish

Escaping the Surface: The Effect of Capture Depth on Submergence Success of Surface-Released Pacific Rockfish

Evaluation of a Selective Flatfish Trawl and Diel Variation in Rockfish Catchability as Bycatch Reduction Tools in the Deepwater Complex Fishery off the U.S. West Coast

Discard Mortality of Trawl-Caught Lingcod in Relation to Tow Duration and Time on Deck

The response to forced decompression in six species of Pacific rockfish

Characterization of the physiological stress response in lingcod

Linking predators to seasonality of upwelling: Using food web indicators and path analysis to infer trophic connections

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