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Temperature effects on Pacific oyster embryos subjected to spent sulfite liquor

Creator:: Will, Theodore
Abstract:: An exploratory study of 48-hour Pacific oyster embryo bioassays employing spent sulfite liquor (SSL) in test concentrations ranging from 10 to 45 ppm was made at two incubation temperatures, 20° and 24° C. Fourteen separate bioassays, each employing embryos originating from three to four different parentages, were conducted at the...
Resource Type:: Masters Thesis
Full Text:: 20 ppm SSL con- centration, 24° C, 95.8% normal. II '.i li l u i h ` Figure 5

Studies on the molluscan and fish hosts of the "salmon poisoning" fluke, Nanophyetus salmincola (Chapin)

Creator:: Gebhardt, Gary Alan.
Abstract:: This study¹ was undertaken: (1) to obtain information on the distribution of the snail, Oxytrema silicula, in three coastal rivers in Oregon, and the seasonal incidence of infection in these snails and in snails from an inland stream, with the cercariae of the trematode, Nanophyetus salinincola; (2) to follow cercarial...
Resource Type:: Masters Thesis

A review of the Gadopsidae, with a description of a new species from Tasmania

Creator:: Parrish, Richard H.
Abstract:: The taxonomic placement of Gadopsidae is discussed and an evaluation of its osteological relationships with related families is given. Similarities to the more primitive genera of the trachinoids, notothenioids, and uranoscopoids are noted and the inclusion of Gadopsidae in the Trachinoidae is recommended. A description of the geological history of...
Resource Type:: Masters Thesis
Full Text:: , University of British Columbia, under ar- rangements made by Harry W. Lorz, Oregon State University. Edward

Biology of the pile perch (Rhacochilus vacca)

Creator:: Wares, Paul Gordon
Abstract:: Data were gathered on the life history of the pile perch (Rhacochilus vacca) from Yaquina Bay, Oregon, between April, 1966, and July, 1967. Pile perch feed on the bottom and consume mostly molluscs, barnacles and decapod crustaceans. Food habits varied among seasons and locations within the bay, whereas the diet...
Resource Type:: Masters Thesis

Growth of juvenile sockeye salmon, Oncorhynchus nerka (Walbaum), in Auke Lake, Alaska

Creator:: Bucaria, Garvan Pat
Resource Type:: Masters Thesis

The influence of some environmental factors on the distribution of fishes in Upper Klamath Lake

Creator:: Vincent, David Thomas
Abstract:: The fishes of Upper Klamath Lake appeared to distribute themselves in three general groups during the summers of 1964 and 1965: (1) the chubs--unrestricted as to distribution with slight seasonal variations; (2) rainbow trout and yellow perch -- restricted to certain water conditions that exist only along the northern marsh...
Resource Type:: Masters Thesis
Full Text:: RIVER WILLIAMSON RIVER 3 SPCA H RIVER SPRAGUE RIVER UPPER KLAMATH LAKE KLAMATH

Factors affecting the abundance of fall chinook salmon in the Columbia River

Creator:: Van Hyning, Jack M.
Abstract:: A study of the population ecology of Columbia River fall chinook salmon, Oncorhynchus tshawytscha (Walbaum), was made in an attempt to determine the cause of a serious decline in this run which occurred in the early 1950's. Fluctuations in abundance of major salmon runs the North Pacific were examined to...
Resource Type:: Dissertation
Full Text:: á 8 6 o co 4 z 2 o I 0 H ilj '1 I 1 i / J / r 4 _ u_ 0 MC NARY 1¡M

Some aspects of the comparative ecology of fishes associated with juvenile sockeye salmon, Oncorhynchus nerka (Walbaum), in the lakes of the Naknek river system, Alaska

Creator:: Wallace, Richard L.
Abstract:: A study of the distribution, relative abundance and diet of fishes sympatric with juvenile sockeye salmon, Oncorhynchus nerka (Walbaum), within the freshwater nursery areas of the Naknek River system was undertaken from 1961 to 1963. The study was part of an extensive investigation to determine what factors in the freshwater...
Resource Type:: Dissertation
Full Text:: . George Y. Harry, Jr. , Director, for providing the opportunity and financial assistance to conduct the

Movement and angler use of four foodfishes in Yaquina Bay, Oregon

Creator:: Beardsley, Alan J.
Resource Type:: Dissertation
Full Text:: collecting permits andlending: the fyke net used to catch s ur fp e r c h. Special appreciation goes to my

The black crappie, Pomoxis nigromaculatus, as a farm pond fish in Oregon

Creator:: Stolte, Lawrence
Abstract:: The black crappie was evaluated as a pond fish in four experimental ponds in the Willamette Valley. Two ponds were stocked with largemouth bass, bluegill sunfish, and black crappie (1:9:3), and two ponds with largemouth bass and black crappie (1:3). Total biomass was greatest in the three-species ponds (80 kg/...
Resource Type:: Masters Thesis
Full Text:: biomass W e i g h t i n G r a m s 700 600 m S00 400 + 300 298 290 250 200 100

ScholarsArchive@OSU

Temperature effects on Pacific oyster embryos subjected to spent sulfite liquor

Studies on the molluscan and fish hosts of the "salmon poisoning" fluke, Nanophyetus salmincola (Chapin)

A review of the Gadopsidae, with a description of a new species from Tasmania

Biology of the pile perch (Rhacochilus vacca)

Growth of juvenile sockeye salmon, Oncorhynchus nerka (Walbaum), in Auke Lake, Alaska

The influence of some environmental factors on the distribution of fishes in Upper Klamath Lake

Factors affecting the abundance of fall chinook salmon in the Columbia River

Some aspects of the comparative ecology of fishes associated with juvenile sockeye salmon, Oncorhynchus nerka (Walbaum), in the lakes of the Naknek river system, Alaska

Movement and angler use of four foodfishes in Yaquina Bay, Oregon

The black crappie, Pomoxis nigromaculatus, as a farm pond fish in Oregon

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