Index Catalog // ScholarsArchive@OSU

An investigation of the alarm response in anuran amphibian larvae

Creator:: Hews, Diana K.
Abstract:: The results of my research suggest that tadpoles of the Western toad (Bufo boreas) and the Cascades frog (Rana cascadae) display an alarm response to chemicals from injured conspecific tadpoles. Furthermore, results suggest that the Bufo boreas alarm response can be elicited by a natural predator when it feeds on...
Resource Type:: Masters Thesis
Full Text:: to chemicals released from injured conspecifics occurs in a wide variety of aquatic animals

Cardiovascular and respiratory responses of the ghost shrimp, Callianassa californiensis Dana, to the pesticide carbaryl and its hydrolytic product 1-naphthol

Creator:: Estes, Patricia S.
Abstract:: Many environmental factors influence cardiovascular and respiratory activities of crustaceans. The effects of natural stressors (hypoxia, low salinity, high temperature) have been well studied, but the effects of pollutants upon these two organ systems have received less attention. The presence of the pesticide carbaryl (Sevin, Union Carbide, Inc.) and its...
Resource Type:: Masters Thesis
Full Text:: exposed to carbaryl and 1-naphthol. Page 23 2. The toxicity of carbaryl to some aquatic arthropods. 24

Succession and stability in two rocky intertidal communities on the central Oregon coast

Creator:: Farrell, Terence M.
Abstract:: The stability of a limpet-dominated community was assessed in a experiment in which an consumer was temporarily removed. Compared to unmanipulated plots, the limpet-exclusion plots developed greater algal abundance and altered species composition of both algae and barnacles. The community was not perturbed beyond its capacity to recover, since the...
Resource Type:: Dissertation
Full Text:: animal. Manipulations of barnacle and herbivore abundances demonstrated that facilitation was an

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:: Heart Association, and National Institutes of Health. Finally, a very special thank you to my wife

Comparative studies of the population ecology and life history patterns of an alkaline salt lake insect : Ephydra (Hydropyrus) hians Say (Diptera:Ephydridae)

Creator:: Herbst, David B.
Abstract:: Seasonal abundance and life history traits were compared between populations of the brine fly Ephydra (Hydrokyrus) hians Say (Diptera:Ephydridae), from two western Great Basin alkaline salt lakes. Abert Lake, Oregon, has a relatively low salinity (20-30 g/1 total dissolved solids) and more co-inhabitant benthic species than the higher salinity Mono...
Resource Type:: Dissertation
Full Text:: of 60% (Herbst, unpubl.obs.). The aquatic life stages (egg, larva, pupa) are relatively free of

Marine herbivore-plant interactions : the feeding ecology of the sea slug Placida dendritica

Creator:: Trowbridge, Cynthia D.
Abstract:: The feeding ecology of a common temperate mesoherbivore, the oligophagous sea slug Placida dendritica (Gastropoda: Opisthobranchia: Ascoglossa), was examined from April 1985 to June 1989. Along the central coast of Oregon, Placida consumed three host species: the low intertidal green algae Codium setchellii, C. fragile, and Bryopsis corticulans. Individual slugs...
Resource Type:: Dissertation
Full Text:: ecology of the sea slug Placida dendritica AN ABSTRACT OF THE THESIS OF Cynthia D. Trowbridge for the

The ecological and behavioral dynamics of breeding in three sympatric anuran amphibians

Creator:: Olson, Deanna H.
Abstract:: Breeding ecology and behavior were investigated in a field study of three sympatric anuran amphibians in the Oregon Cascade Mountains: the western toad (Bufo boreas), the Cascades frog (Rana cascadae) and the Pacific treefrog (Hyla regilla). A comprehensive study of the western toad mating system was conducted at three populations...
Resource Type:: Dissertation
Full Text:: Oring 1977). Components of animal life history, demography and ecology are important for the

Early succession in beds of the red alga, Iridaea cornucopiae Post. & Rupr. (Gigartinaceae) : alternate pathways

Creator:: Olson, Annette M.
Abstract:: Multiple successional sequences have been observed following disturbance in communities on marine hard substrata. Observations of the turf-forming alga, Iridaea cornucopiae Post. & Rupr. (Gigartinaceae), suggest that I. cornucopiae may assume its dominance by its ability to vegetatively pre-empt space. High limpet densities in the natural community, suggest that I....
Resource Type:: Masters Thesis
Full Text:: stratified random design. The species of algae or animal appearing under a hole was assigned a cover of 2

A comparative study of prenatal behavior ontogeny in altricial and precocial murid rodents

Creator:: Robinson, Scott R., 1952-
Abstract:: Using techniques that permit the direct observation of fetuses in vivo, prenatal behavioral development was compared among four species in the rodent family Muridae: the Norway rat (Rattus norvegicus), Mongolian gerbil (Meriones unguiculatus), cotton rat (Sigmodon hispidus), and spiny mouse (Acomys cahirinus). Rattus and Meriones bear altricial offspring, as do...
Resource Type:: Dissertation
Full Text:: this thesis was supported in part by grant HD 16102-06 from the National Institute of Child Health

Blood calcium and phosphorus perturbations in rainbow trout (Salmo gairdneri) and coho salmon (Oncorhynchus kisutch) : some correlates of physiological stress

Creator:: Adams, Brett Alan
Abstract:: Changes in blood calcium and phosphorus concentrations were characterized for rainbow trout (Salmo gairdneri) and coho salmon (Oncorhynchus kisutch) following intense exercise or exposure to suspended volcanic ash or topsoil. Significant elevations in blood calcium and phosphorus accompanied exercise-induced acidemia in both S. qairdneri and O. kisutch. These elevations persisted...
Resource Type:: Masters Thesis
Full Text:: capacity of the Toutle River to support aquatic life was virtually destroyed by the eruption events

ScholarsArchive@OSU

An investigation of the alarm response in anuran amphibian larvae

Cardiovascular and respiratory responses of the ghost shrimp, Callianassa californiensis Dana, to the pesticide carbaryl and its hydrolytic product 1-naphthol

Succession and stability in two rocky intertidal communities on the central Oregon coast

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

Comparative studies of the population ecology and life history patterns of an alkaline salt lake insect : Ephydra (Hydropyrus) hians Say (Diptera:Ephydridae)

Marine herbivore-plant interactions : the feeding ecology of the sea slug Placida dendritica

The ecological and behavioral dynamics of breeding in three sympatric anuran amphibians

Early succession in beds of the red alga, Iridaea cornucopiae Post. & Rupr. (Gigartinaceae) : alternate pathways

A comparative study of prenatal behavior ontogeny in altricial and precocial murid rodents

Blood calcium and phosphorus perturbations in rainbow trout (Salmo gairdneri) and coho salmon (Oncorhynchus kisutch) : some correlates of physiological stress

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