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Browsing Theses, Dissertations and Student Research Papers (Zoology) by Title

Browsing Theses, Dissertations and Student Research Papers (Zoology) by Title

Now showing items 95-114 of 119

Rapid effects of corticosterone on stress-related behaviors in an amphibian

Chiavarini, Katherine E. (1997-05-29)

In the wild, when an animal is exposed to predators or harsh conditions, the stress response is often associated with fleeing behaviors, which are seen as increased locomotor behavior. Handling-stress procedures and in ...
Reconstructing the paleobiology of the dinosaurs

Geist, Nicholas R. (1999-06-02)

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 dinos ...
Regulation of the development of sex-specific genital muscles by the doublesex gene

Merritt, Thomas J. S. (1994-12-01)
Reproductive and aggressive behaviors in the giant hairy desert scorpion

Tallarovic, Sara K. (2000-02-18)

The giant hairy desert scorpion, Hadrurus arizonensis, is a long-lived species of North American scorpion that is presented here as an important model for research in mating systems evolution and sexual selection. Many ...
Reproductive ecology and endocrinology of the garibaldi damselfish, Hypsypops rubicundus (Pomacentridae)

Sikkel, Paul C. (1992-11-24)

I examined two aspects of the reproductive behavior of the garibaldi, Hypsypops rubicundus, a temperate marine damselfish with male parental care. My primary objective was to determine the relationship between female ...
Response to Hypoxia in the staghorn sculpin, (Leptocottus armatus)

Wagner, Sara Anne (1990-11-02)

Long-term subae lal survival has been anecdotally noted in the staghorn sculpin, Leptocottus armatus. In this study, I quantified this phenomenon physiologically by examining the following parameters: standard metabol ...
The role of gonadotropin-releasing hormone in the regulation of courtship behavior in the male red-sided garter snake, Thamnophis sirtalis parietalis

Smith, Mitchell Todd (1994-04-14)
The role of oxygen and other environmental variables on survivorship, abundance, and community structure of invertebrate meroplankton of Oregon nearshore coastal waters

Eerkes-Medrano, Dafne I. (2011-12-01)

The high productivity of Eastern Boundary Upwelling Ecosystems (EBUE), some of the most productive ecosystems in the globe, is attributed to the nutrient rich waters brought up through upwelling. Climate change scenarios ...
Role of priority effects and habitat complexity in coral-reef fish communities

Almany, Glenn R. (2002-05-24)

Understanding the processes that influence the composition of animal communities is a central goal in ecology. Interactions between established residents and colonizing juveniles that affect the subsequent survival of ...
The roles of environmental constraints and aggression on male-female pairing in the coral-reef fish Gobiosoma evelynae

Harding, Jeffrey A. (1993-09-10)

Early theoretical models for the evolution of male-female pairing were based largely on studies of birds. These models assumed that biparental care of eggs and young was an essential component of pairing. However, mal ...
The roles of provenance and phylogeny in recruitment, community assembly, and species coexistence in invaded California grasslands

Brandt, Angela J. (2011-03-31)

Biological invasions pose one of the greatest threats to global biodiversity, but many naturalized invaders coexist with the native community. Community ecology theory provides a framework for understanding the mechanism ...
Size variation and food habits of larval bullfrogs, Rana catesbeiana Shaw, in western Oregon

Brown, Randall Errol (1972-05-03)

An investigation was made of the factors which cause differences in growth rates and transformation size of bullfrog tadpoles under natural conditions. Tadpoles and algal samples were collected from two.adjacent farm pon ...
Some hemiurid trematodes of Oregon marine fishes

McCauley, James Elias (1954-04-21)
Steroids regulate α2,6-sialic acid-containing glycoconjugates in murine uterine epithelium at the time of implantation

Gaza-Bulseco, Georgeen S. (2000-06-01)

Sialic acids are involved in many cellular interactions. They can serve as an adhesion ligand or act as an inhibitor to cellular adhesion by charge repulsion or by masking potential ligands. Although sialic acids are i ...
Stress and reproduction in male garter snakes

Moore, Ignacio T. (1999-12-01)

Animals respond to stressful situations with increases in plasma levels of glucocorticoid stress hormones. These hormones originate from the adrenal cortex in response to stimulation of the hypothalamic-pituitary-adren ...
Sulfide metabolism in Lucina floridana, a sulfur symbiont-containing marine clam

Larabee, Jeannine Kay (1997-10-24)

Lucina floridana is an intertidal clam that contains intracellular, sulfur-oxidizing symbiotic bacteria in its gills. These bacteria are chemolithoautotrophic, using the energy from the oxidation of reduced sulfur comp ...
Summer bird habitats in the Corvallis area, Willamette Valley, Oregon

Eddy, Richard Hewes, 1929 (1953-05-12)
Surfgrasses (Phyllospadix spp.) as dynamic foundation species for macroinvertebrates along the Oregon coast

Moulton, Orissa M. (2010-09-21)

Foundation species are important components of ecosystems because they provide habitat and ameliorate stressful conditions for residents. This thesis considers the role of surfgrasses (Phyllospadix spp.) as dynamic found ...
The swimming response of the Sacconereis stage of Autolytus varius to changes in hydrostatic pressure

Smith, Randall William (1969-05-09)

The syllid polychaete Autolytus varius reproduces in the spring and early summer in Yaquina Bay, Oregon, The fertilized female epitokes, or Sacconereis, carry the developing eggs and larvae in a ventral sac until the ...
The symbiotic relationships and morphology of Paravortex sp. nov. (Turbellaria, Rhabdocoelida) a parasite of Macoma nasuta Conrad, 1837

Hanson, Alfred Warren (1969-12-11)

Rhabdocoels of the genus Paravortex are parasites of marine molluscs. The bent-nosed clams, Macoma nasuta(Conrad, 1837) of Yaquina Bay, Lincoln County, Oregon are commonly infected with a new species of Paravortex. Th ...