Index Catalog // ScholarsArchive@OSU

Growth and behavioral responses to elevated temperatures by juvenile sablefish Anoplopoma fimbria and the interactive role of food availability

Creator:: Sogard, Susan M. and Olla, Bori L.
Abstract:: Larval and age-0 sablefish Anoplopoma fimbria reside in neustonic waters of the North Pacific during spring and summer. We estimated the potential impacts of elevated surface temperatures on ecological processes of growth, conversion efficiency, and behavior in early juvenile sablefish. Growth experiments tested a wide range of temperatures from 6...
Resource Type:: Article
Full Text:: . Sogard*, Bori L. Olla Alaska Fisheries Science Center, National Marine Fisheries Service, Hatfield

Altered search speed and growth: social versus independent foraging in two pelagic juvenile fishes

Creator:: Ryer, Clifford H. and Olla, Bori L.
Abstract:: Prior studies have demonstrated that juvenile walleye pollock Theragra chalcogramma forage socially in schools for spatially and temporally clumped food, but forage more independently for spatially and temporally dispersed food. One advantage of social foraging is that fish in schools may be able to locate more food clumps than fish...
Resource Type:: Article
Full Text:: fishes Clifford H. Ryer*, Bori L. Olla Alaska Fisheries Science Center, National Marine Fisheries

Effects of physical factors on the vertical distribution of larval walleye pollock Theragra chalcogramma under controlled laboratory conditions

Creator:: Olla, Bori L. and Davis, Michael W.
Abstract:: This study examined, under controlled laboratory conditions, behavioral responses of larval walleye pollock (4 to 8 mm) to various physical factors that may potentially play a role in vertical movements and distribution. Diel periodicity in vertical distribution was evident and appeared to be under exogenous control. During the day, with...
Resource Type:: Article
Full Text:: Theragra chalcogramma under controlled laboratory conditions Bori L. Olla, Michael W. Davis

Comparison of Predator Avoidance Capabilities with Corticosteroid Levels Induced by Stress in Juvenile Coho Salmon

Creator:: Olla, Bori L., Davis, Michael W., and Schreck, Carl B.
Abstract:: The relationship between predator avoidance deficits induced by a simple handling stress and the level of plasma corticosteroids was determined for juvenile coho salmon Oncorhynchus kisutch. Groups of fish were held out of water for 1 min, then allowed to recover from this stress for 1, 90, or 240 min....
Resource Type:: Article
Full Text:: Predator Avoidance Capabilities with Corticosteroid Levels Induced by Stress in Juvenile Coho Salmon Bori L

Increases in jellyfish biomass in the Bering Sea: implications for the ecosystem

Creator:: Brodeur, Richard D., Sugisaki, Hiroya, and Hunt Jr., George L.
Abstract:: There has been a dramatic increase in jellyfish biomass over the eastern Bering Sea shelf since the early 1990s, which was previously hypothesized to have been triggered by changing climate and ocean conditions. We examine the hypothesis that the presence of these large carnivores has affected fisheries resources, either through...
Resource Type:: Article
Full Text:: . Brodeur1,*, Hiroya Sugisaki2, George L. Hunt Jr 3 1Northwest Fisheries Science Center, National Marine

Skin Deep: An Assessment of New Zealand Blue Whale Skin Condition

Creator:: Barlow, Dawn R., Pepper, Acacia L., and Torres, Leigh G.
Abstract:: Skin condition assessment of wildlife can provide insight into individual and population health. Yet, logistics can limit skin condition assessment of large whales. We developed a standardized, quantitative protocol using photographs to assess skin condition of blue whales in New Zealand, and demonstrate the value gained by testing hypotheses, documenting...
Resource Type:: Article
Full Text:: condition 1 Dawn R. Barlow1*, Acacia L. Pepper1, Leigh G. Torres1 2 1Geospatial Ecology of Marine

Reconstructing juvenile chinook salmon life history in the Salmon River Estuary, Oregon, using otolith microchemistry and microstructure

Creator:: Volk, Eric C., Bottom, Daniel L., Jones, Kim K., and Simenstad, Charles A.
Abstract:: We quantified the juvenile rearing and migratory patterns of individuals from a population of fall-spawning Chinook salmon Oncorhynchus tshawytscha in Oregon's Salmon River estuary using otolith microchemistry and microstructure. The study confirmed the daily periodicity of otolith growth increments in a natural fish population under field conditions and validated fundamental...
Resource Type:: Article
Full Text:: Otolith Microchemistry and Microstructure Eric C. Volk a , Daniel L. Bottom b , Kim K. Jones c & Charles A

Jellyfish, Forage Fish, and the World’s Major Fisheries

Creator:: Robinson, Kelly L., Ruzicka, James J., Decker, Mary Beth, Brodeur, Richard D., Hernandez, Frank J., Quiñones, Javier, Acha, E. Marcelo, Uye, Shin-ichi, Mianzan, Hermes, and Graham, William M.
Abstract:: A majority of the world’s largest net-based fisheries target planktivorous forage fish that serve as a critical trophic link between the plankton and upper-level consumers such as large predatory fishes, seabirds, and marine mammals. Because the plankton production that drives forage fish also drives jellyfish production, these taxa often overlap...
Resource Type:: Article
Full Text:: Jellyfish, Forage Fish, and the World’s Major Fisheries Robinson, K. L., Ruzicka, J. J., Decker, M. B

Hydrothermal activity in the Northwest Lau Backarc Basin: Evidence from water column measurements

Creator:: Lupton, J. E., Arculus, R. J., Resing, J., Massoth, G. J., Greene, R. R., Evans, L. J., and Buck, N.
Abstract:: The Northwest Lau Backarc Basin, consisting of the Northwest Lau Spreading Center (NWLSC) and the Rochambeau Rifts (RR), is unique in having elevated ³He/⁴He ratios (up to 28 R[subscript a]) in the erupted lavas, clearly indicating a hot spot or ocean island basalt (OIB)-type signature. This OIB-type helium signature does...
Resource Type:: Article
Full Text:: , Washington 98195, USA G. J. Massoth Mass-Ex3 Consulting, Renton, Washington 98056, USA R. R. Greene and L

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:: . Musick, M. M. Harbin, S. A. Berkeley, G. H. Burgess, A. M. Eklund, L. Findley, R. G. Gilmore, J. T

ScholarsArchive@OSU

Growth and behavioral responses to elevated temperatures by juvenile sablefish Anoplopoma fimbria and the interactive role of food availability

Altered search speed and growth: social versus independent foraging in two pelagic juvenile fishes

Effects of physical factors on the vertical distribution of larval walleye pollock Theragra chalcogramma under controlled laboratory conditions

Comparison of Predator Avoidance Capabilities with Corticosteroid Levels Induced by Stress in Juvenile Coho Salmon

Increases in jellyfish biomass in the Bering Sea: implications for the ecosystem

Skin Deep: An Assessment of New Zealand Blue Whale Skin Condition

Reconstructing juvenile chinook salmon life history in the Salmon River Estuary, Oregon, using otolith microchemistry and microstructure

Jellyfish, Forage Fish, and the World’s Major Fisheries

Hydrothermal activity in the Northwest Lau Backarc Basin: Evidence from water column measurements

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

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