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The Algal Flora (Excluding Class Bacillariophyceae) Of Foster's Pond, Allen County, Kentucky, Linda Garrett

Masters Theses & Specialist Projects

A systematic survey of the algal flora (excluding Class Bacillariophyceae) of Foster's Pond, Allen County, Kentucky, was conducted from January 29, 1970, to March 25, 1971. Physical and chemical data were taken in order to characterize the quality of the water and examine its relationships to floral composition and periodicity insofar as the level of discrimination employed permitted.

A total of 119 taxa representing five divisions were identified. Twenty-five of these were previously unreported for the State of Kentucky.

Members of the Division Chlorophyta, which composed 66.4% of all the identified taxa, dominated the flora throughout the year. Desmid and …

An Electron Microscopical Study Of The Ultrastructure And Classification Hemocyte Of The Grasshopper, Melanoplus Differentials (Thomas) (Orthoptera: Acrididae), Andrejs Liepins

Masters Theses

The hemocytes of the fifth instar nymphs of the grasshopper Melanoplus differentialis (Thomas) (Orthoptera: Acrididae) have been the subject of this study. The hemocytes of this insect, based on the fine structures of its cells, have been found to fall into four main categories or groups: Nucleocytes, Plasmatocytes, Granulocytes and Coagulocytes. The bases for their classification are differences in the ultrastructure of the cytoplasmic organelles as well as cytoplasmic inclusions are revealed as revealed by electron microscopy.

The Effects Of The Cyclic 3'5'-Monophosphate Of Adenosine And Its Dibutyryl Derivative On The In-Vitro Immunization Of Mouse Spleen Cell Suspensions, James A. Blanks

Biological Sciences Theses & Dissertations

Abstract unavailable.

A Survey Of Fresh-Water Oligochaeta And Their Commensal Ciliates From The Richmond, Virginia Area, Elsa Queen Falls

Master's Theses

The distribution of North American aquatic oligochaetes and the ciliates inhabiting their guts have received very limited attention. For this reason, the present study was initiated to survey fresh ­water oligochaetes of the families Aeolosomatidae, Naididae, Opistocystidae, and Lumbriculidae in four bodies of water of the Richmond, Virginia area and to determine the incidence of commensal ciliates within the gut .

Captan-Induced Reversions In Bacteria, Gayle M. Nii Lopiccolo

Masters Theses

No abstract provided.

Protein Catabolism And Urea Utilization In Water-Deprived And Fasted Ground Squirrels And Rats, Gerald L. Rigler

Biology ETDs

The objective of this study was to examine a specific metabolic adaptation, namely, the extent to which protein catabolism was changed in long-term water-deprived and starved Spennophilus lateralis, S. spilosoma, and laboratory rats. It was thought from previous studies that the relative amount of protein and fat catabolism affects water balance and thus determines how long an animal will survive water deprivation. Hibernators may possess unique metabolic flexibility in adapting to water deprivation as they apparently adapt to dehydration when they are hibernating.

In the first series of experiments animals· were water deprived for 6 days at 2 seasons and …

The Effect Of Hibernation On Memory In Spermophilus Lateralis, Mary Colleen Mcnamara

Biology ETDs

Spermophilus lateralis, were trained to solve a black-white discrimination task in order to escape from a water filled tank. Following the attainment of criterion, the ground squirrels were trained on the reversal task of the original discrimination problem. Twenty-four hours after reaching criterion on the reversal training, all subjects were placed in a hibernaculum at 7-10 C for a period of 11 days. The animals were returned to the laboratory after the 11-day

cold exposure period, and 24 hr later were tested for retention of the learned behavior. The animals were returned to the hibernaculum for an additional 11 days …

Induced Changes In The Rates Of Uridine-3H Uptake And Incorporation During The G1 And S Periods Of Synchronized Chinese Hamster Cells, Peter J. Stambrook, Jesse E. Sisken

Biology Faculty Publications

The rates of uridine-5-³H incorporation into RNA and the rates of uridine uptake into the acid-soluble pool during the cell cycle of V79 Chinese hamster cells were examined. Cells cultured on Eagle's minimal essential medium supplemented with fetal calf serum, lactalbumin hydrolysate, glutamine, and trypsin displayed rates of incorporation and uptake which increased only slightly during G₁ and accelerated sharply as DNA synthesis commenced. In contrast, cells cultured on minimal essential medium supplemented only with calf serum exhibited rates of incorporation and uptake which increased linearly through both G₁ and S. The transition from one pattern …

Mobbing Behavior Of Mexican Jays (Aphelocoma Ultramarina) And Scrub Jays (Aphelocoma Coerulescens), Jack F. Cully Jr.

Biology ETDs

Mobbing behavior of Mexican Jays (Aphelocoma ultrarmarina) and Scrub Jays (A. coerulescens) to a Great Horned Owl (Bubo virginianus) was studied in field and laboratory experiments during 1970 and 1971. In both series Mexican Jays had a stronger response to the owl in rate of calling, and a longer lasting response. Population distribution patterns and social compatibility of flock members are considered the most important differences in explaining the stronger response of Mexican Jays to the owl. Hand-reared naive Mexican and Scrub jays were also tested in the laboratory. At age 80 days Scrub Jays mobbed the owl. The naive …

Effects Of Hippocampal Lesions On Performance In A Shock Escape Task, George L. Reuthebuck

Morehead State Theses and Dissertations

Submitted in partial fulfillment of the requirements for the degree of Master of Arts in Psychology in the Graduate School of Morehead State University by George L. Reuthebuck on January 21, 1972.

A Floristic Study And Grouse Production In The Mille Lacs Wildlife Area, Michael J. Scanlan

Journal of the Minnesota Academy of Science

The upland vegetation in four stands was analyzed for differences in conditions important for ruffed grouse production. The structure of the control stand suggests that Acer saccharum and other shade-tolerant tree species will replace the dominants Quercus borealis and Populus tremuloides. The Acer saccharum would not be useful to grouse. In an adjacent stand in which forest litter had been burned, there was a tremendous amount of reproduction of trembling aspen and much less sugar maple reproduction, compared with the control stand. Differences in the understory beneficial to grouse also were found.

Fishes Of The Yellow Medicine River In Southwestern Minnesota, Carl H. Ernst

Journal of the Minnesota Academy of Science

In view of the possible impoundment of the Yellow Medicine River in southwestern Minnesota by a proposed United States Army Corps of Engineers dam, a survey of the fish-fauna of this river was undertaken. The fish-fauna is listed and discussed, as are also the possible effects of the impoundment.

Migration And Mortality Of Banded Mourning Doves, Lawrence L. Thomforde

Journal of the Minnesota Academy of Science

Banding data gathered over a three-year period at Savage, Minnesota, were analyzed to determine migration patterns and mortality rates of 2,218 mourning doves. The age ratio among trapped doves was 1.19 immatures per 1 adult and the sex ratio 3.84 males per 1 female. The weighted mean annual mortality rate for immature doves was 58.5 percent. For adult doves, the weighted annual mortality was 28.2 percent. The total weighted recovery rate was 1.24 immatures to 1 adult. The data show that immatures are 75 percent more vulnerable than adults to being shot; although no difference was found in direct recovery …

Biology Of Chrysemys Picta Bellii In Southwestern Minnesota, Carl H. Ernst, Evelyn M. Ernst

Journal of the Minnesota Academy of Science

The turtle, Chrysemys picta belIii, was studied in southwestern Minnesota. The taxonomic characteristics are analyzed. The turtles are diurnal and have an annual activity period extending from mid-May to October. Activity and feeding are controlled by water temperature. The population dynamics are discussed. Growth is rapid early in life but slows after maturity. Growth is compared with that of other subspecies of C. picta. Habitat preferences, predation, parasites, algal relationships and shell abnormalities are discussed.

The Flora Of The Headwaters Of Cornelius Creek, Botetourt County, Virginia, Thelma H. Dalmas

Theses & Honors Papers

The headwaters of Cornelius Creek support a rich flora characteristic of seepage areas at high altitudes on north facing slopes f the central Blue Ridge Mountains. In the two acres studied, three ecological habitats were encountered; a dry forested tract, a wet forested tract, and an open glade. Some of the species of vascular plants which are present are representative of a more northern flora. One hundred and twenty vascular plants and twenty-five bryophytes were collected and deposited in the herbaria at the Peaks of Otter and Longwood College.

Food Habits And Life History Of Stoneflies Of The Cle Elum River, Washington, Thomas Edward Swapp

All Master's Theses

This paper presents an evaluation of the food habits of 20 species of stoneflies (Plecoptera) as determined by guy analysis. Life history data, principally adult emergence periods and seasonal distribution of naiads, are presented for 38 species. Finally, an evaluation is made of the stoneflies' diet composition and the seasonal availability of potential food materials.

Electron Microscope Study Of The Infection Process Of Blue-Green Algae Virus, Thomas A. Rudd

Master's Theses

No abstract provided.

Use Of Trawls For Sampling Fish, Howard F. Krosch

Journal of the Minnesota Academy of Science

The use of trawls for sampling fish populations is discussed. Techniques and equipment for this trawling operation included a small boot with a 25-foot trawl and a battery-powered winch on a forward-mounted crossboom for setting and retrieving the trawl.

Poriferan Fauna Of A Minnesota Pond, Louise A. Rollins

Journal of the Minnesota Academy of Science

An examination of sponges in Lund's Pond, within Itasca State Park, Clearwater County, Minnesota, was conducted in the summer of 1970. Five species, representing four genera, were identified. Some physical characteristics and water chemistry of the pond also were examined.

The Laboratory Curriculum At Marquette University, Peter A. Abramoff

Biological Sciences Faculty Research and Publications

No abstract provided.

Development Of A Flameless Atomic Absorption Assay For Mercury In Biological Materials And Levels Of Mercury Detected In Striped Bass (Roccus Saxatilis) Collected In The San Joaquin Delta, Patrick Glenn Burch

University of the Pacific Theses and Dissertations

The method for the determination of total mercury in biological material described in this paper comprises a destruction of organic matter by wet digestion, a reduction of the mercury by stannous sulfate, and circulation of the displaced mercury vapor in a closed system directly connected with an atomic absorption spectrophotometer Seven tissues from ten samples of locally obtained Roccus saxatilis (striped bass) were analyzed, and a three-fold elevation of mercury levels in the liver over the levels in the filet noted. See Table XIX for a comparison of the high, low, and average values for each tissue.

Facilitated Diffusion In Rabbit Erythrocytes, Arthur Hing-Cheung Chui

University of the Pacific Theses and Dissertations

The present kinetic study of the permeability of rabbit erythrocytes has established that carrier systems are involved in the penetration of certain non-electrolytes. Saturation, competitive inhibition, and butanol inhibition kinetics were used to demonstrate the presence of carrier systems and the values of half-saturation constants (ø) were determined for the following water soluble non-electrolytes: glycerol, ethylene glycol, urea, and thiourea.

These non-electrolytes are commonly used in permeability studies because they are relatively non-toxic and their small sizes allow penetration of the erythrocyte membrane within a reasonable length of time.

The Larval Morphology Of Three Species Of Pagurus (Decapoda, Anomura) From California, William R. Hall

University of the Pacific Theses and Dissertations

This study is concerned with description of larval stages of Pagurus granosimanus, P. hemphilli and P. hirsutiusculus. All three are found intertidally in Northern California. Descriptions are based on laboratory raised zoea and glaucothoe.

The Formation And Constriction Of The Trapping Rings In The Nematophagous Fungus Dactylaria Brochopaga Dreschler, Walter Thomas Rudek

Master's Theses

No abstract provided.

Pharmacological Effects Of A Bufadienolide Isolated From The Toad Bufo Boreas Halophilus, Roy Gordon Knickelbein

University of the Pacific Theses and Dissertations

For centuries, men have known that the skin of toads and other amphibians possess pharmacologically active compounds (Abel and Nacht,1911;Chen and Jensen,1929;Chen and Kovarikova,1967).All amphibians produce toxins in glands scattered over the skin .Many anuran amphibians have parotoid glands located on the lateral ,anterior ldorsal surface which are apparently specialized for the secretion of large quantities of toxin. W'eiss(1899) and Muhse(1909) describe the histology of these glands.

A Study Of Lungs In Rana Catesbeiana Tadpoles, Ross Miles Hart

University of the Pacific Theses and Dissertations

The first quantitative studies of pulmonary and cutaneous respiration in the amphibians were made on Rana esculenta and Rana temporaria by Krogh (1904). He inserted a cannula connected to an air pump into the trachea and analyzed separately the air forced through the lungs by the pump and the air surrounding the frog. He was able to show that in R. temporaria the lungs and skin are both important in respiratory exchange but in somewhat different ways. Oxygen enters through the lungs whereas carbon dioxide is excreted through the skin. Oxygen intake through the skin is determined solely by physical …

Simple And Facilitated Diffusion In Rat Erythrocytes, Stephen Rudolph Cainelli

University of the Pacific Theses and Dissertations

Early studies of the permeability of the animal cell membrane were difficult to compare, because of the variety of cell types involved. In the late nineteenth century, workers chose to use erythrocytes due to their advantages over using a variety of cell types. With erythrocytes a comparison could be developed between strictly homologous cells of many different species. Erythrocytes are easily obtainable and mature cells are separate from all other cells of the body as well as from each other. Of even greater importance is the fact that the mature erythrocyte’s major function is the uptake of the greatest possible …

Studies On The Anthocyanin Pigments In Allium Amplectens Torr, Chun-Mei Chu

University of the Pacific Theses and Dissertations

In this investigation, the basic pigment component, or anthocyanidin, of the ten most common spots was identified using paper and thin layer chromatographic techniques.

Copulation In Two Species Of Tetraopes: Behavior, Mechanics And Morphology (Coleoptera, Cerambycidae), Thomas John Pilat

Master's Theses

No abstract provided.

Effect Of Nutrients On The Growth Of Cyanophyta Species And Their Ability To Develop Virus Infection Under Different Physiological Conditions, Vithalbhai Lavjibhai Sheladia

Master's Theses

No abstract provided.