Index Catalog // ScholarsArchive@OSU

Natural history and evolution of a color polymorphism in Rana pipiens, the northern leopard frog

Creator:: Hoffman, Eric A.
Abstract:: A primary goal of population genetics is to identify the role of microevolutionary forces in producing observed patterns of molecular and phenotypic variation. I conducted four studies in the northern leopard frog, Rana pipiens, to determine just how mutation, migration, genetic drift, and selection influenced, genetic structure of mitochondrial DNA...
Resource Type:: Dissertation
Full Text:: Color Polymorphism in Rana pipiens. the Northern Leopard Frog. Abstract approved: Michael S. Blouin A

Population and conservation genetic structure of the Cascades frog, Rana cascadae throughout the species' range

Creator:: Monsen, Kirsten J.
Abstract:: A major goal of conservation biology is to elucidate the population genetic structure in threatened species and assess the relative importance of the evolutionary forces that shape that population genetic structure. I conducted three studies in the declining amphibian Rana cascadae to assess levels of population genetic differentiation and the...
Resource Type:: Dissertation
Full Text:: DISSER'I'ATION OF 4ichael S. Blouin A major goal of conservation biology is to elucidate the population genetic

Aquatic community responses to drought disturbance: experimental manipulations of top predator extinctions and stream drying

Creator:: Boersma, Kate S.
Abstract:: Although it is generally assumed that the intensifying abiotic environment is the primary effect of drought on aquatic organisms, drought-induced top predator extinctions may be an important underlying mechanism. I used manipulative experiments to disentangle the impacts of drying and top predator extinctions on arid-land aquatic invertebrate communities. I then...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Kate S. Boersma for the degree of Doctor of Philosophy in Zoology presented on October 10th

Modulation of respiratory burst activity of trout (Oncorhynchus mykiss) phagocytic cells

Creator:: Galvan, Irja S.
Abstract:: In a comparison of the mammalian and fish immune systems many similarities and differences are found. While most of the differences occur in the acquired or lymphoid arm of immunity, the nonlymphoid immune systems of fish and mammals share many similarities. For instance, both animal groups use phagocytic neutrophils and...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Ida S. Galvan for the degree of

A study of the sodium + potassium-activated adenosinetriphosphatase in brine shrimp Artemia salina, Nauplii

Creator:: Peterson, Gary Lee
Resource Type:: Dissertation
Full Text:: molecular weights of 101,000 and 95,200. Both contain the catalytic subunit(s) and stain positive with PAS

The fine structure of the arthrobranch of the crayfish, Pacifastacus leniusculus Dana, with special reference to active ion uptake

Creator:: Morse, Howard Curtis
Abstract:: The gills of an Oregon crayfish, Pacifastacus leniusculus Dana, were examined with histological and histochemical techniques and their fine structure was investigated by electron microscopy. Special attention was given to the structural basis of active ion uptake. The histology of these gills was the same as that of other crayfish...
Resource Type:: Dissertation
Full Text:: base and mid- section of a gill stalk are strikingly more ion permeable than tubules from the tip

Osmotic and ionic regulation in a freshwater teleost, Ictalurus nebulosus (Ie sueur)

Creator:: Walker, Lester Eugene
Abstract:: Aspects of hydromineral balance in the stenohaline fresh-water catfish, Ictalurus nebulosus (Le Sueur) were studied at 10° and 20°C. Temperature did not affect water content significantly. Water content was 78 ml/100 g body weight, 32% of which is in muscle and 49% in the skeleton and associated connective tissue. The...
Resource Type:: Dissertation
Full Text:: solution. From a knowledge of the skin area and the gill area a permeability constant was derived for

Isolation and characterization of a larval crustacean salt gland from the brine shrimp Artemia salina

Creator:: Lowy, Robert Joel
Abstract:: A method for isolating the salt gland (SG) from the larval brine shrimp has been developed. This extra-renal organ is removed from 5-10% of Stage Inauplii by vortexing after incubating the animals at 37°C for 8 hours in a saline solution buffered with 100 mM sodium phosphate at pH 7.6....
Resource Type:: Dissertation
Full Text:: members, Drs. Derek J. Baisted, Christopher J. Bayne, Robert P. Hard and Ralph S. Quatrano, and to Dr

Connecting microevolutionary processes with macroevolutionary patterns across space and time

Creator:: Uyeda, Josef C.
Abstract:: Whether microevolutionary processes can explain macroevolutionary patterns has long been a matter of contentious debate. The debate has persisted largely because of the challenging task of connecting microevolutionary theory, which examines population-level phenomena on the generation scale, to data collected across larger spatial and temporal scales. My dissertation research broadly...
Resource Type:: Dissertation
Full Text:: heritability of a trait (h2) and the selection differential (s): In other words, the amount of change in a

The life history of Nectobrachia indivisa Fraser, 1920 (Copepoda : Lernaeopodoida) a parasite of the starry flounder

Creator:: Wilkes, Stanley Northrup
Abstract:: The stages in the life history of the parasitic copepod Nectobrachia indivisa Fraser, 1920, have been described. The adult female lives permanently attached to the gills of the starry flounder, Platichthys stellatus (Pallas, 1811) Girard, 1854. The adult male is a dwarf, which usually lives attached to the genital process...
Resource Type:: Dissertation
Full Text:: minutes into vigorous free- swimming copepodid larvae. The copepodid either remains in the gill chamber

Studies on some digenetic trematodes from Ritner Creek, Polk County, Oregon

Creator:: Law, Daniel Tin-Hung
Abstract:: Seven species of fresh water fishes belonging to three different families and two species of snails from Ritner Creek, Polk County, Oregon were surveyed for adult and larval trematodes. A total of seven species of trematodes representing four families was recovered from the intestine of the fishes. Of these, at...
Resource Type:: Dissertation
Full Text:: Immature and mature rediae of Spaeridiotrema spinoacetabulum. 83 63 Cercaria of S. spinoacetabulum. 89 64

Description and life history of Cardicola alseae sp.n. (Trematoda : Sanguinicolidae)

Creator:: Meade, Thomas Gerald
Abstract:: Cardicola alseae is a blood dwelling trematode found in the fishes Salmo clarki henshawi and Salmo gairdneri gairdneri. Eggs which were ovoid in shape and non-operculate left the adult and passed to the gill capillaries of the secondary lamellae. The miracidium was ovoid, 0.070 mm. long by 0.052 mm. wide,...
Resource Type:: Dissertation
Full Text:: . alseae. The presence of eggs of S. klamathen- sis in the rnain gill capillaries rather than in the

Calcium metabolism and regulation in larval Rana catesbeiana

Creator:: Pennington, Janet
Abstract:: Calcium concentration and its regulation was examined in tissues of larval Rana catesbiana. Considerable variability was found in tissue calcium that could not be explained by stage of development. A seasonal effect was observed, with plasma calcium decreasing and muscle calcium increasing during winter. Total plasma calcium concentration reflects, within...
Resource Type:: Dissertation
Full Text:: the bath calcium specific activity with time in free-swimming and gill-perfused animals. 38 5

Life cycle and host specificity of Diclidophora sp. (Monogenea-Diclidophoridae), a parasite of embiotocid fishes

Creator:: Hanson, Alfred Warren
Abstract:: The life cycle of a monogenean, Diclidophora sp., was studied with special attention to the time required for developmental stages to occur. Eggs are produced by adult worms at the rate of one every 13.5 minutes and require 32 days to hatch when incubated at 12.5°C and 30.9‰ salinity. Rate...
Resource Type:: Dissertation
Full Text:: borders of primary lamellae of the host fish gill. A second set of clamps is added before the 36th

Systematics of the salamander genus Dicamptodon strauch (Amphibia: Caudata: Ambystomatidae)

Creator:: Nussbaum, Ronald A.
Abstract:: Dicamptodon is the single, extant genus of the ambystomatid subfamily Dicamptodontinae. Two species, D. ensatus (Eschscholtz) and D. copei Nussbaum are recognized. D. ensatus is found in the forested, mountain regions of northwestern California and western Oregon, in the Willapa Hills and Cascade Mountains of Washington, in extreme southwestern British...
Resource Type:: Dissertation
Full Text:: , tail height, tooth number, gill raker number, color, and degree of ossification of skeletal elements

Breeding habits, embryonic thermal requirements and embryonic and larval development of the Cascade frog, Rana cascadae Slater

Creator:: Sype, William E.
Abstract:: The breeding habits and embryonic thermal requirements of the Cascade frog of Oregon, Rana cascadae Slater, are described. The limits of temperature tolerance of the pre-feeding stages are from 6° to 27°C for embryos held at constant temperatures. However, for pre-feeding embryos exposed at different developmental stages for short durations...
Resource Type:: Dissertation
Full Text:: increases in rate (from first cleavage to gill circulation) occur with only relatively small increments of

The oplophorid and pasiphaeid shrimp from off the Oregon coast

Creator:: Forss, Carl Albert
Abstract:: The 13 species of shrimps studied for this thesis were collected off the Oregon coast. The family Oplophoridae is well represented in this area. Five of the seven known genera were identified. Hymenodora frontalis, H. glacialis, and H. gracilis were described and further differentiating characters were illustrated. Other members of...
Resource Type:: Dissertation
Full Text:: curtirostris, Meningodora mollis, Notostomus japonicus, Systellaspis braueri and S. cristata. Species of

Peptidergic regulation of visceral motor circuits in the Sea Hare, Aplysia californica

Creator:: Morgan, James L. M.
Resource Type:: Dissertation
Full Text:: . Respiratory pumping is a stereotyped spontaneous contraction (3-6 s) of the mantle organs, the siphon, gill

Na-K-activated adenosinetriphosphatase and sodium transport in larval Rana catesbeiana

Creator:: Boonkoom, Viroj
Resource Type:: Dissertation
Full Text:: their possible role in transepithelial ion transport. Gill Na-K-ATPase requires both Na and K as well

Characterization and localization of arginine vasotocin receptors in the brain and kidney of an amphibian

Creator:: Boyd, Sunny K.
Abstract:: Because arginine vasotocin (AVT) activates male sexual behaviors in the rough-skinned newt (Taricha granulosa), quantitative autoradiography with radiolabelled arginine vasopressin (³H-AVP) was used to localize and characterize putative AVT receptors in the brain of this amphibian. Binding of ³H-AVP to sites within the medial pallium was saturable, specific, reversible, of...
Resource Type:: Dissertation
Full Text:: season revealed no sexual dimorphism. These areas may represent site(s) of action where AVT elicits

A comparative analysis of morphological, physiological, and biochemical adaptation to abiotic stress in intertidal porcelain crabs, genus Petrolisthes

Creator:: Stillman, Jonathon Harris
Abstract:: Organismal tolerance to abiotic environmental stresses contributes significantly to setting the distribution limits of organisms, as demonstrated by vertical zonation patterns in the marine intertidal zone. In this thesis, the ultimate (evolutionary) and proximate (mechanistic) causes of tolerance to temperature and emersion stresses associated with the intertidal zone were examined...
Resource Type:: Dissertation
Full Text:: stabilizers. Elucidation of the mechanism(s) of LDH stabilization in Petrolisthes may provide novel insight

Neuronal and hormonal control of the vascular system of the marine mollusc, Aplysia californica

Creator:: Ligman, Scott H.
Abstract:: The vascular system of Aplysia californica is a simple visceromotor system with three main arteries innervated by a small pool of identified neurons. I used this system to study the functions of neuropeptide transmitters and their actions on neural and muscle tissues. A central finding of this study is that...
Resource Type:: Dissertation
Full Text:: ............... 146 16 Responses of artery segments to efferent gill vein and esophagus tissue extracts

The heat shock response and its regulation in congeneric marine snails (genus Tegula) from different thermal habitats : implications for the limits of thermotolerance and biogeographic patterning

Creator:: Tomanek, Lars
Resource Type:: Dissertation
Full Text:: 51 2.4 Autoradiographs showing effects ofincuubation temperature on Incorporation of3'S

Neural regulation of the heart and egg-laying behavior in the nudibranch mollusc Archidoris montereyensis

Creator:: Wiens, Brenda L.
Resource Type:: Dissertation
Full Text:: return stimulates the gill to contract (respiratory pumping), thus increasing venous return and cardiac

Bopyridian (Crustacea, Isopoda) parasites found in the eastern Pacific of the United States

Creator:: Danforth, Charles Garrison
Resource Type:: Dissertation
Full Text:: Phyllodurus abdominalis 100 . . . . s . = . . . . . e ., 0

Osmotic and ionic regulation in the Dungeness crab, Cancer magister (Dana)

Creator:: Alspach, George Samuel, Jr.
Abstract:: Osmotic and ionic regulation was studied in the Dungeness crab, Cancer magister, after acute exposure to a range of five salinities from 25% to 125% sea water (100% = 32%). Blood, urine and muscle tissue were sampled at 24 and 48 hours after exposure. Analyses were made of blood and...
Resource Type:: Dissertation
Full Text:: provided by the National Science Foundation' s Sea Grant. To my wife, I owe a special thanks for her

The life history of the salmon poisoning fluke Troglotrema salmincola (Chapin)

Creator:: Bennington, Elwin Everrett
Resource Type:: Dissertation
Full Text:: within gill and fin of trout. ACKNMLEDGENENT The writer is grateful to Dr. Ivan Pratt of the

Parasites of the grunion, Leuresthes tenuis (Ayres)

Creator:: Olson, Andrew Clarence
Resource Type:: Dissertation
Full Text:: State College, Drs. Harold w. Manter and Leland s. Olsen of the University of Nebraska, Dr. Walter E

The behavior of the pea crab Fabia subquadrata in relation to its mussel host, Mytilus californianus

Creator:: Lidrich, Joseph Stanley
Abstract:: The pea crab Fabia subquadrata is frequently found as a symbiont of mussels, living within the mantle cavity. This study examined the nature of this symbiotic relationship by recording the pattern of distribution of individuals in a mussel bed, testing responsiveness to host secretions, and observing the feeding mechanics and...
Resource Type:: Dissertation
Full Text:: infected with Spirometra mansonoides or S. ranarum had a significantly greater growth rate, attained a

Variation in female reproductive success in amphibians

Creator:: Dyal, Leslie A.
Abstract:: My dissertation focuses on the factors that influence variation in female reproductive success in plethodontid salamanders and in toads. Variation in reproductive success fuels evolutionary change. Although, females often have been overlooked in studies of reproductive success due to perceived lower levels of variation when compared to variation in male...
Resource Type:: Dissertation

The geographic variation and distribution of the long-toed salamander, Ambystoma macrodactylum Baird

Creator:: Ferguson, Denzel
Resource Type:: Dissertation
Full Text:: people have collected and contributed living specimens: Dr. Donald S. Farner, Washington State College

Indirect effects of fishing on predators and their prey

Creator:: Stallings, Christopher Derek
Abstract:: Predators are fundamentally important for regulating and driving prey population dynamics as well as structuring ecological communities. Over-exploitation of marine resources has caused dramatic depletions of predatory fish species and shifts in marine community composition, with attendant declines in productivity and diversity of marine ecosystems. Despite the important ramifications of...
Resource Type:: Dissertation
Full Text:: , Rome, Italy. Greenstreet, S. P. R., and S. I. Rogers. 2000. Effects of fishing on non-targeted

Variations in salinity tolerance in the Pacific Treefrog, Hyla regilla, in Oregon

Creator:: Roberts, James Oliver
Abstract:: Eggs, larvae and adults of the four subspecies of Hy la regilla occurring in Oregon as given by Jameson, Mackey and Richmond (1966) were collected and subjected to salt stress in a series of graded seawaters. It was found that in all cases adults were more tolerant than larvae and...
Resource Type:: Dissertation
Full Text:: LD50' s were achieved in the three life stages of frogs collected in the four subspecies areas in

Cannibalism in larvae of the long-toed salamander, Ambystoma macrodactylum

Creator:: Wildy, Erica Lynn
Abstract:: Predator-prey interactions have historically been studied to explain patterns of organization observed in populations and communities. They have also been important in understanding the evolution of antipredator responses in prey and counterstrategies in predators. Despite the breadth of knowledge that exists for heterospecific interactions, relatively few studies have investigated the...
Resource Type:: Dissertation
Full Text:: scolytys and S. multistriatus (Beaver, 1974). Cannibalism of smaller larvae by larger individuals

Some hemiurid trematodes of Oregon marine fishes

Creator:: McCauley, James Elias
Resource Type:: Dissertation
Full Text:: ............................ 1 Mat.rials and ••theda................... S Genus Derogen•• LUb..................... 6

Aerial and aquatic respiration in the neotenic and transformed Pacific giant salamander, Dicamptodon ensatus (Eschscholtz)

Creator:: Clothier, Glen Warren
Resource Type:: Dissertation
Full Text:: front chamber s via the gill slits of the neotene and prevent separation of pulmonary and cutaneous gas

Ecological aspects of kin discriminating behavior with implications of functional value

Creator:: Hokit, D. Grant
Abstract:: To assess the context dependence of kin discriminating behavior, I examined kin-biased aggregation behavior in tadpoles of R. cascadae in different ecological conditions. I manipulated food distribution, predator presence, thermal heterogeneity, and relatedness in a multifactorial mesocosm experiment. All four factors interacted to influence tadpole dispersion. My results suggest that...
Resource Type:: Dissertation

The reproductive system of the male neotenic Dicamptodon ensatus (Eschscholtz)

Creator:: Cohen, Nathan Wolf
Resource Type:: Dissertation
Full Text:: • • • • • • 2l Gross .AnatOJq ot the Male Urogenital S;ptem • • • • • • 8 Testes and Du~ts

Zoogeography of pelagic shrimps (Natantia: Penaeidea and Caridea) in the North Pacific Ocean

Creator:: Wasmer, Robert Allen
Abstract:: A study was done on the zoogeography of species of oceanic shrimp in the North Pacific from 22°N to 56°N and from 124°W to 145°E, using samples of shrimp collected from 1954 to 1969. These collections were made during the following cruises: John R. Manning Cruise 22, and the Hugh...
Resource Type:: Dissertation
Full Text:: travel expenses for a portion of this work through U. S. Atomic Energy Commission Contract AT(45-1

Scope for activity in the crayfish Pacifastacus leniusculus : role of circulatory and respiratory parameters in limiting it

Creator:: Rutledge, Paul Stephen
Resource Type:: Dissertation
Full Text:: concentration of crayfish 63 acclimated to temperature 4 Presence of hemocyanin 25 S aggregation state as a 64

The effects of throidectomy on the salamander Triturus torosus (Rathke)

Creator:: Taylor, Alfred
Resource Type:: Dissertation
Full Text:: -------- ----------- ------ 22 a The integument 2.2 (Table ) b . The tongue ---- - - - 23 o . The e oph.gu s

Osmotic and ionic regulation in the North American crayfish Pacifastacus leniusculus (dana)

Creator:: Kerley, David Emmet
Abstract:: Osmotic and ionic regulation was studied in the North American crayfish Pacifastacus leniusculus (Dana), stepwise acclimated to increasing salinities. Stepwise acclimation involved transferring crayfish at 48 hour intervals from freshwater to 100% seawater in 20% increments. In experiments where 70% seawater was used, animals were moved directly from 40 to...
Resource Type:: Dissertation
Full Text:: August 7, 1969 Typed by Nancy S. Kerley for David Emmet Kerley ACKNOWLEDGMENT I wish to thank my

Population structure of the intertidal shore crab Hemigrapsus oregonensis (Brachyura, Grapsidae) in Yaquina Bay, a central Oregon coast estuary

Creator:: Batie, Robert Edward
Abstract:: The Hemigrapsus oregonensis population at Coquille Point in the Yaquina Bay Estuary on the Central Oregon Coast was studied from April, 1972 through May, 1973. The population was found to be vertically stratified from the 1 ft level to the 5 ft level. Population densities were found to be most...
Resource Type:: Dissertation
Full Text:: ) of the western slopes of the Coastal Mountain Range. The bay is Oregon!s sixth largest with a

Biological studies on the hemoflagellates of Oregon marine fishes and their potential leech vectors

Creator:: Burreson, Eugene Michael
Abstract:: Of 2,122 marine fishes belonging to 36 species collected in the vicinity of Newport, Oregon, 541 belonging to 8 species were infected with hemoflagellates. Four species of trypanosomes and three species of cryptobias were found in offshore fishes, but no hemoflagellates were observed in fishes from Yaquina Bay. Trypanosoma pacifica...
Resource Type:: Dissertation
Full Text:: , M. J. Hosie, J. K. Johnson, S. G. Leb sack, R. L. Miller, P. C. Rothlisberg, G. L. Theurer, and

Metabolic adjustment to temperature in Strongylocentrotus purpuratus (Stimpson)

Creator:: Ulbricht, Richard Jules
Abstract:: The metabolism of Strongylocentrotus purpuratus (Stimpson) was investigated at several levels of urchin organization. Some experiments were performed with tissues from recently collected (acclimatized) urchins, Other experiments were performed with tissues from urchins held at one of two temperatures (acclimated) for 30 days. Body-component oxygen consumption was measured for bodywall,...
Resource Type:: Dissertation
Full Text:: reported herein is to ascertain the influence of temperature on metabolism at various levels of urchin (S

Larval settlement and juvenile group dynamics in the domino damselfish (Dascyllus albisella)

Creator:: Booth, David J. (David John), 1958-
Abstract:: Patterns of settlement of larvae and population dynamics of juveniles are poorly known for coral reef fishes. During 1987 to 1989, I studied these phenomena in the domino damselfish (Dascyllus albisella), a species endemic to the Hawaiian Islands. Larvae settle onto branching coral heads as new recruits (10-15 mm in...
Resource Type:: Dissertation
Full Text:: . Wagner, D. Baggett, S. Klump, K. Fletcher and B. Call. Funding for my research came from many sources

Investigation of the circadian rhythm of locomotion in the rough-skinned newt, Taricha granulosa

Creator:: Briggs, Jeffrey Lawrence
Abstract:: Over 56,000 hours of locomotor activity of Taricha granulosa were recorded using two types of low cylindrical plastic monitoring chambers. This species shows distinct rhythms of activity under normal day-night cycles, shortened day-night cycles, constant darkness (DD) and constant light (LL). The rough-skinned newt is day active and crepuscular. I...
Resource Type:: Dissertation
Full Text:: periodogram analysis. Financial support was supplied by the U. S. Department of Health, Education and

Effect of environmental variables on the structure and function of hemocyanin from Callianassa californiensis (Decapoda: Thalassinidea)

Creator:: Miller, Karen Illman
Abstract:: Oxygen binding behavior and subunit association-dissociation of the hemocyanin from Callianassa are sensitive to several environmental variables. Callianassa californiensis is a burrowing estuarine which must survive changes in salinity, temperature and oxygen availability. Previous work on the structure and function of the hemocyanin was done under conditions which did not...
Resource Type:: Dissertation
Full Text:: , one might propose that the HcyI is unloading its oxygen to HcyC at the gill and picking up oxygen

The histopathological effects of larval trematodes on the hepatopancreas of Oxytrema siliqua (Gould)

Creator:: Porter, Clarence Alan
Abstract:: The histopathological and histochemical effects on the snail Oxytrema siliqua, caused by the larvae of Nanophyetus salmincola, have been studied. The parasite causes damage to the organ by increased pressure, active ingestion of the hepatic tubules, and by the increased burden placed upon the snail in disposing of the waste...
Resource Type:: Dissertation
Full Text:: latter. In infected S. proxima and P. gyrina, abnormalities were manifested in the form of fatty

Reconstructing the paleobiology of the dinosaurs

Creator:: Geist, Nicholas R.
Abstract:: Dinosaurs represent one of the most successful evolutionary radiations of terrestrial vertebrates, with a myriad of forms that dominated the terrestrial environment for over 180 million years. Despite the fact that dinosaurs are the focus of extensive popular and scholarly investigation, relatively little is actually known of their biology. The...
Resource Type:: Dissertation
Full Text:: after hatching (Lang, 1. W., 1989; F. B. Gill, 1990). Similarly, the discovery of eggs in close

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