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Browsing Oregon Department of Fish and Wildlife by Subject

Browsing Oregon Department of Fish and Wildlife by Subject "Thematic Classification -- Plants and Animals -- Fish -- Anadromous Fish -- Chum Salmon"

Now showing items 1-8 of 8

Age and growth study of Tillamook Bay chum salmon (Oncorhynchus keta)

Henry, Kenneth A.; Oregon. Fish Commission (Portland, Or. : Fish Commission of Oregon, 1954)

Ages were determined for 65 fish from the 1947 run and for 287 fish from the 1949 run. In 1947 the percentage composition by age was as follows: 32.3 percent 3-year-old fish, 66.2 percent 4-year-old fish, and 1.5 percent ...
Age, length and weight studies of three species of Columbia River salmon (Oncorhynchus keta, O. gorbuscha and O. kisutch)

Marr, John C.; Oregon. Fish Commission (Salem, Or. : Department of Research, Fish Commission of the State of Oregon, 1944)

Samples, consisting of scales, length and weight measurements, and sex determinations of chum, pink, and silver salmons, were taken from the commercial catch in the Columbia River in 1914. Five hundred eighteen chum scal ...
Analysis of factors affecting the production of chum salmon (Oncorhynchus keta) in Tillamook Bay

Henry, Kenneth A.; Oregon. Fish Commission (Portland, Or. : Fish Commission of Oregon, 1953-09)

Tillamook Bay chum salmon are caught commercially by gill-nets, both set and drift, and from 1928 through 1949 the landings have averaged 819,689 pounds per season. More chum salmon are caught on Tillamook Bay than on th ...
The effects on salmon populations of the partial elimination of fixed fishing gear on the Columbia River in 1935

Johnson, Donald R.; Chapman, Wilbert McLeod, 1910-1970; Schoning, Robert W.; Oregon. Fish Commission (Portland, Or. : Oregon Fish Commission, 1948)

1. Six major types of commercial gear have been used to take salmon and steelhead on the Columbia River; namely, gill nets, set nets, seines, traps, fish wheels and dip nets. 2. The five important commercial species in t ...
The future of the Columbia River salmon fisheries

Rich, Willis H. (Willis Horton), 1885-1972; Oregon. Fish Commission (Salem, Or. : Department of Research, Fish Commission of the State of Oregon, 1940)

The salmon runs of the Columbia River constitute one of the most important natural resources of the states of Oregon and Washington. Thousands of people are dependent, wholly or in part, upon these resources for their ...
Oregon coastal salmon and steelhead tagging programs

Henry, Kenneth A.; Morgan, Alfred R. (Portland, Or. : Fish Commission of Oregon, 1964)

Part I. To aid in the management of the Tillamook Bay commercial salmon fishery, a tagging program was conducted on the salmon and steelhead trout runs in 1953. General migration behavior, the minimum length of time th ...
The present state of the Columbia River salmon resources

Rich, Willis H. (Willis Horton), 1885-1972; Oregon. Fish Commission. Research Dept. (Salem, Or. : Department of Research, Fish Commission of the State of Oregon, 1941)

THE SALMON of the Columbia River have supported an intensive fishery for over seventy years but are now showing unmistakable signs of depletion, and various factors are contributing to the rapid progress of this condit ...
The salmon runs of the Columbia River in 1938

Rich, Willis H. (Willis Horton), 1885-1972; Oregon. Fish Commission (Salem, Or. : Department of Research, Fish Commission of the State of Oregon, 1942)

Exceptional data are available for the study of the salmon runs of the Columbia River in 1938. Detailed figures on catch were supplied by Oregon and Washington in such form that they could readily be combined with the co ...