Evidence for the nonessentiality of ascorbic acid in the diet of the rainbow trout,...

Numerous tests were applied to rainbow trout of eleven months of age to determine whether ascorbic acid is an essential element of the diet of these fish. Although previous work had been done on this question, conflicts in the results, the large...

1968-10-15 (iso8601)

The influence of metabolites on the growth and development of salmonid embryos and sac fry

1966-07-15 (iso8601)

A population study of the rainbow trout (Salmo gairdneri) in a Central Oregon stream

The rainbow trout population in Elder Creek, Oregon was studied between June 1965 and November 1966. The physical characteristics of the stream during the summer season were described. Rainbow trout were captured in each of three sections on the...

1967-06-07 (iso8601)

Development of a streamside incubator for culture of Pacific salmon

Criteria for the design and construction of a prototype streamside incubator for Pacific salmon (Oncorhynchus) eggs and alevins are described. Operation of the prototype and methods of transporting freshly spawned salmon eggs from distant sources...

1969-12-11 (iso8601)

Stress, osmoregulation, and the hormone cortisol in yearling coho salmon, Oncorhynchus...

Freshwater (FW) and seawater (SW) acclimated yearling coho salmon, Oncorhynchus kisutch, were subjected to severe confinement stress in FW, SW, or a medium (1/3 SW) that was approximately isosmotic to the fish's blood. Chronic stress caused...

1982-12-12 (iso8601)

Neuromuscular pharmacology and [¹²⁵I]-α-bungarotoxin binding characteristics of the...

1982-04-02 (iso8601)

The predicted influence of kraft mill effluent on the distribution of some sport fishes...

1965-08-04 (iso8601)

Distribution, density, and productivity of three species of accipiter hawks in Oregon

Distribution of nests and nesting success were determined for sharp-shinned hawks (Accipiter striatus) Cooper’s hawks (A. cooperii), and goshawks (A. gentilis) in Oregon during 1969 through 1974. 1n addition, two areas (11,74l hectares in Eastern...

1974-12-19 (iso8601)

Time and energy budgets of a population of dippers (Cinclus mexicanus) during winter in...

A time and energy budget was constructed for a population of dippers (Cinclus Mexicanus) in the Cascade Range of Oregon during winter. A total of 12,202 point observations of activity were made from nine observation blinds from 19 November 1973 to...

1975-03-03 (iso8601)

Nest box selection of wood ducks as influenced by color and site factors

Selection of colored nest boxes by wood ducks (Aix sponsa) was evaluated during the breeding seasons of 1967-68 in Benton County, Oregon. No color or site factor influence was observed in 1967 when nest boxes were erected in sets of eight boxes...

1968-08-29 (iso8601)

The abundance and distribution of harbor seals and steller sea lions in Oregon

The abundance and distribution of the Pacific harbor seal (Phoca vitulina richardi) and the northern or Stellar sea lion (Eumetopias jubata) in Oregon are described, The number of seals and sea lions presented for bounty in Oregon since 1925 is...

1968-08-30 (iso8601)

Multiple hemoglobin variations in coho salmon, Oncorhynchus kisutch, during parr-smolt...

1984-04-03 (iso8601)

Life history of rainbow trout and considerations for introducing steelhead into...

1985-11-26 (iso8601)

The chronic toxicity of 2,3,7,8-tetra-chlorodibenzo-p-dioxin (TCDD) to five selected...

Five species of aquatic organisms were exposed to TCDD. Lethal effects of initial exposure to coho salmon of 23.4 nanogram TCDD/gram fish wet weight (23.4 ng/g), or equivalent to 100 nanogram per liter (100 ng/l) TCDD in water, for 24 hours were...

1974-04-16 (iso8601)

Fertilization of salmonid eggs with cryopreserved sperm

Numerous fishery researchers have attempted to preserve viable fish sperm, but only three investigations were successful in the fertilization of fresh eggs with frozen and thawed sperm: Blaxter (1953); Hoyle and Idler (1968); and Graybill and...

1969-09-04 (iso8601)

Distribution patterns of black-tailed deer (Odocoileus hemionus columbianus) in...

Direct observation of a known number of black-tailed deer (Odocoileus hemionus columbianus), within the Cedar Creek study enclosure in the Tillamook Burn, Oregon, was carried on throughout 1964. Observations were made from three huts located...

1965-06-11 (iso8601)

Capture-related stressors impair sablefish, Anoplopoma fimbria, immune system function

Sablefish, Anoplopoma fimbria, is a valuable North Pacific Ocean species caught in several commercial fisheries and is often discarded due to size or catch limits. Managers must account for the mortality of discarded fish to assess fish...

2004-05-25 (iso8601)

Use of range sites by pronghorns in south central Oregon

Relative use by pronghorns (Antilocapra americana) of 16 range sites was studied during summer and fall of 1971 and 1972 on Hart Mountain National Antelope Refuge, an area of high desert rangeland in south central Oregon. A Relative Use Index was...

1974-05-01 (iso8601)

Relationships between shelf temperatures, coastal sea level, the coastal upwelling...

1981-04-17 (iso8601)

Seasonal movements and home ranges of mule deer at Lava Beds National Monument

1979-12-12 (iso8601)

The influence of canopy type and seasons on adult aquatic insect emergence and riparian...

The objective of my study was to examine differences in riparian tree and shrub composition associated with adult aquatic emergence and implications for terrestrial spiders in these sites. Seasonal abundance and biomass of adult emergent aquatic...

2004-06-24 (iso8601)

Using auklets to monitor the effects of global warming on the Bering Sea ecosystem:...

2005-09-23 (iso8601)

Evaluation of differing anti-predator strategies of three juvenile north Pacific...

Pleuronectid flatfish are generally thought to utilize stereotypical anti-predator behavior to reduce encounters with potential predators, including burial, maintaining a low profile on the bottom, cryptic coloration, and reduced activity....

2005-07-18 (iso8601)

Passage of juvenile cutthroat trout and steelhead through retrofitted culverts

2005-02-09 (iso8601)

Potential effects of ungulate exclusion fencing on displaying Hawaiian Petrels...

Recently the National Park Service has proposed raising fence heights to exclude mouflon sheep (Ovis musimon) from conservation areas at Hawai'i Volcanoes National Park. Concern over previous mortality of Hawaiian Petrels (Pterodronia...

2004-12-07 (iso8601)