Index Catalog // ScholarsArchive@OSU

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:: River system samples and between the Tasmanian and Wellington River samples being 7. 6 and 4. 4

Morphological and meristic characteristics of ten populations of blackside dace, Rhinichthys osculus nubilus (Girard ), from western Oregon

Creator:: Zirges, Malcolm H.
Abstract:: Blackside dace, Rhinichthys osculus nubilus (GIRARD), were collected from ten western Oregon streams and examined for variation among morphological and meristic characters. Several characters were observed to vary between populations studied. Number of vertebrae, number of scales in and above the lateral line, length of snout, and depth of body...
Resource Type:: Masters Thesis
Full Text:: Lateral Line Number of Scales Above the Lateral Line Occurrence of Maxillary Barbels Pe 1 1 1 3 6 6

Systematics and ecology of chubs (Gila : Cyprinidae) of the Alvord Basin, Oregon and Nevada

Creator:: Williams, Jack Edward
Abstract:: Seventeen populations of Gila Baird and Girard are identified from the Alvord Basin of southeastern Oregon and northwestern Nevada. Gila in the Alvord Basin occupy a wide range of habitats, including warm springs, cool springs, creeks, reservoirs, and a thermal lake. These populations became isolated in remnant habitats when waters...
Resource Type:: Dissertation
Full Text:: 1981 APPROVED: Professor of Fisheries in charge of major Head of Department of Fisheri s and

Identification and systematics of larvae of Artedius, Clinocottus, and Oligocottus (Scorpaeniformes:Cottidae)

Creator:: Washington, Betsy B.
Abstract:: Complete, identified, developmental series of larval cottids Artedius fenestralis, A. creaseri, A. meanyi, Oligocottus snyderi, Clinocottus embryum, and C. globiceps are described for the first time. In addition, redescriptions of four species, Artedius harringtoni, A. lateralis, Oligocottus maculosus, and Clinocottus acuticeps are included that provide new and comparative information on...
Resource Type:: Masters Thesis
Full Text:: (Scorpaeniformes:Cottidae). Abstract approved: Redacted for Privacy Complete, identified, developmental series of larval

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

The effects of the herbicides Diquat and Dichlobenil on pond invertebrates

Creator:: Wilson, Dennis Carl
Abstract:: The acute toxicity of Diquat (1:1-ethylene-2:2' dipyridylium dibromide) and Dichlobenil (2, 6-dichlorobenzonitrile) to six selected pond invertebrates was determined using the median tolerance limit estimation method. Diquat was more toxic to the amphipod, Hyalella azeteca than to the aquatic insects Callibaetis, Limnephilus, Enallagma, Libellula, and Tendipedidae. The addition of mud...
Resource Type:: Masters Thesis
Full Text:: Mean Range Mean Range Callibaetis 3 10 9. 7 7. 6 -11.8 7. 6 7. 4- 7. 8 7. 4 7. 2- 7. 6 H. azeteca 2

A dwarfed population of Catostomus rimiculus (Catostomidae: Pisces) in Jenny Creek, Jackson County, Oregon

Creator:: Hohler, David Berry
Abstract:: The population of Catostomus rimiculus from Jenny Creek basin is identified as a dwarfed derivative of the normally much larger C. rimiculus from the Klamath and Rogue River systems. C. rimiculus in Jenny Creek basin are separated from those in the Klamath by a series of 3-10m waterfalls resulting from...
Resource Type:: Masters Thesis
Full Text:: ) e = Cottonwood Creek (2) f = Johnson Creek (9) g = Keene Creek (10) h = Beaver Creek (4) i

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

Creator:: Miller, Richard A.
Abstract:: 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 irreversible; 95% mortality occurred in 60 days. Exposure...
Resource Type:: Masters Thesis
Full Text:: of 6. 3 p1 injected s ample of 0. 0247 pg/mi TCDD- benrene standard solution, retention time 4. 5 mm

Systematics, variation, distribution, and biology of lampreys of the genus Lampetra in Oregon

Creator:: Kan, Ting Tien
Abstract:: Based on the number of velar tentacles and the form of longitudinal lingual laminae found in Lampetra (Entosphenus) t. tridentata and its closely related forms, the taxon Entosphenus should not be considered as a genus as commonly adopted, but, along with the taxa Lethenteron and Lampetra, should be regarded as...
Resource Type:: Dissertation
Full Text:: rivers 27 - Klamath Lake 4 Nestucca River 28 - Lost River 5 - Siletz River 29 John Day River 6 Yaquina

Trophic adaptations and relationships of rockfishes (Sebastes spp.) of Oregon

Creator:: Pequeño, Germán E.
Abstract:: A comparative analysis of structures related to capture and processing of food, in 624 specimens belonging to 31 species of Sebastes of Oregon was made. The structures studied were the following: the tooth-bearing bones (premaxillary, dentary, vomer, palatine); the maxillary, angular, articular, parasphenoid and glossohyal bones; the lower limb of...
Resource Type:: Dissertation
Full Text:: ) 141-230 4 babcocki (21) 179-360 4 borealis (25) 208-630 6 brevispinis (23) 176-510 6 5 3 caurinus

ScholarsArchive@OSU

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

Morphological and meristic characteristics of ten populations of blackside dace, Rhinichthys osculus nubilus (Girard ), from western Oregon

Systematics and ecology of chubs (Gila : Cyprinidae) of the Alvord Basin, Oregon and Nevada

Identification and systematics of larvae of Artedius, Clinocottus, and Oligocottus (Scorpaeniformes:Cottidae)

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

The effects of the herbicides Diquat and Dichlobenil on pond invertebrates

A dwarfed population of Catostomus rimiculus (Catostomidae: Pisces) in Jenny Creek, Jackson County, Oregon

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

Systematics, variation, distribution, and biology of lampreys of the genus Lampetra in Oregon

Trophic adaptations and relationships of rockfishes (Sebastes spp.) of Oregon

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