This report summarizes the results of our bay clam studies in 1985. Activities summarized include monitoring of the recreational and commercial clam fisheries, hatchery stock enhancement studies, natural recruitment studies, and miscellaneous other projects.
Razor clams from Clatsop Beach (Tillamook Head to the Columbia River) were sampled regularly from March through September and periodically the remainder of the year. Sport and commercial diggers were interviewed to obtain data on number, age composition of clams dug, and harvest area. Data from other beaches south of...
Razor clams from Clatsop Beach (Tillamook Head to the Columbia River) were sampled regularly from March through September and periodically the remainder of the year. Sport and commercial diggers were interviewed to obtain data on number, age composition of clams dug, and harvest area. Data from other beaches south of...
"With the implementation of the recreational shellfish license in 2004, ODFW decided to re-initiate a study of the recreational component of the Dungeness crab fishery. The pilot study was performed to assess the effort and catch of recreational Dungeness crabbers on the Columbia River estuary during the fall and winter...
This is an account of an experiment in tagging and releasing Dungeness crabs into Yaquina Bay in early 1957. Did they travel to the ocean, to another bay, or did they stay in Yaquina Bay?
A study was undertaken in the fall of 1948 by the Oregon Fish Commission to determine the possible presence and importance of a delay in the migration of adult chinook salmon (Oncorhynchus tshawytscha) at Bonneville Dam on the Columbia River. Approximately 650 chinook were captured, tagged, and released at the...
An anemia of juvenile chinook salmon (Oncorhynchus tshawytscha) is described and stages of development separated by recognizable syndromes. A vitamin E-deficient diet of low rancidity produced a severe microcytic anemia with strong immature red cell response and granulocytosis occurring 2 to 4 weeks before a drop in hemoglobin and hematocrit...
Kokanee Ecology F-71-R-1 This document is a report on the preliminary investigation into the Kokanee salmon in Odell Lake. As such, it includes catch results of Kokanee from various fishing vessels and days, as well as for fry from trawling. Data includes sizes of fish at various depths and times....