Index Catalog // ScholarsArchive@OSU

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

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

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:: 119–145 in G. K Iwama, A. D. Pickering, J. P. Sumpter, and C. B. 1222 PARKER ET AL. D ow nl oa de

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

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

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

Ecology and Distribution of Blue Whales in New Zealand Across Spatial and Temporal Scales

Creator:: Barlow, Dawn R.
Abstract:: The distribution of mobile marine predators often reflects underlying dynamic ecological processes. The geographical focus of this PhD is the South Taranaki Bight (STB) of New Zealand, where wind-driven coastal upwelling generates productivity and prey to support a blue whale foraging ground. The STB is also New Zealand’s most industrial...
Resource Type:: Dissertation
Full Text:: . Abstract approved: _____________________________________________________ Leigh G. Torres The

Surface distribution of brachyuran megalopae and ichthyoplankton in the Columbia River plume during transition from downwelling to upwelling conditions

Creator:: Roegner, G. Curtis, Daly, Elizabeth A., and Brodeur, Richard D.
Abstract:: In the California Current coastal boundary zone, the spring transition between downwelling and upwelling conditions, along with the fluctuating structure of the Columbia River plume, creates highly dynamic interactions. In this study, we investigated whether the surface distribution of brachyuran larvae and ichthyoplankton would track the dynamics of the Columbia...
Resource Type:: Article
Full Text:: during transition from downwelling to upwelling conditions G. Curtis Roegner a,n, Elizabeth A. Daly b

Marine, Estuarine, and Diadromous Fish Stocks at Risk of Extinction in North America (Exclusive of Pacific Salmonids)

Creator:: Musick, J. A., Harbin, M. M., Berkeley, S. A., Burgess, G. H., Eklund, A. M., Findley, L., Gilmore, R. G., Golden, J. T., Ha, D. S., Huntsman, G. R., McGovern, J. C., Sedberry, G. R., Parker, S. J., Poss, S. G., Sala, E., Schmidt, T. W., Weeks, H., and Wright, S. G.
Abstract:: The problem of extinction in the sea has been recognized only recently by the scientific community (Roberts and Hawkins 1999). For the last decade, the American Fisheries Society (AFS) has pursued an initiative to identify marine fish stocks that may be at risk of extinction in North America (Musick 1998;...
Resource Type:: Article
Full Text:: . Golden, D. S. Ha, G. R. Huntsman, J. C. McGovern, S. J. Parker, S. G. Poss, E. Sala, T. W. Schmidt, G. R

ScholarsArchive@OSU

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

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

Buoyancy regulation and barotrauma in two species of nearshore rockfish

The response to forced decompression in six species of Pacific rockfish

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

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

Ecology and Distribution of Blue Whales in New Zealand Across Spatial and Temporal Scales

Surface distribution of brachyuran megalopae and ichthyoplankton in the Columbia River plume during transition from downwelling to upwelling conditions

Marine, Estuarine, and Diadromous Fish Stocks at Risk of Extinction in North America (Exclusive of Pacific Salmonids)

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