Life Sciences Commons^™

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.

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.

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.

Biosystematic Evidence For Hybridization Between Lysimachia Quadriflora Sims And Lysimachia Hybrida Michaux (Primulaceae), Michael Owen Dillon

Dissertations and Theses @ UNI

Putative hybrids between Lysimachia guadriflora and L. hybrida were discovered in a marsh in Dickinson County in northwest Iowa. No previous reports of interspecific hybridization between these species were found in the literature. Ecological barriers usually separate the parental species; however, at this population, disturbances by grazing animals and yearly fluctuations in the water level allow them to exist sympatrically. The parental species have concurrent flowering periods, similar floral morphology and pigmentation, and are pollinated by non-specific pollinators. The disturbances also provide a wide range of microhabitats intermediate to those of the parents. Thus, hybridization has resulted because of the …

The Effects Of Estrogen On Ionized Calcium In Ovariectomized Calciphylactic Rats, Edward Luverne Hatcher

Dissertations and Theses @ UNI

This research was an attempt to discover the relationship between estrogen treatment and the serum calcium levels in ovariectomized rats. An attempt was also made to study the possible effects of estrogen on calcium deposition during the calcification process by utilizing the calciphylaxis phenomena as a potential biological model. Concentrations of ionized and total calcium in the serum of ovariectomized rats were measured utilizing a calcium selective electrode system and atomic absorption spectroscopy procedures respectively. This was done following 3- and 6-day treatments with estrogen (0.1 µg). The same analysis was used in the calciphylactic treatment procedures both with and …

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.

Mosquitoes Of Black Hawk County, Iowa, Martin Burdett Christiansen

Dissertations and Theses @ UNI

Mosquito populations of Black Hawk County, Iowa, were studied during the summers of 1970 and 1971. The primary sampling technique was the New Jersey light trap with supplementary collections of biting adults to determine species of importance to man. Twenty-two species of mosquitoes were collected in the county. This represents ten species more than had been previously reported from Black Hawk County. Information is presented on the relative abundance and seasonal succession of each species. Aedes vexans (Meigen) and A. trivittatus (Coquillett) were the primary pests of man, occurring from June through August. Aedes sticticus (Meigen) ranked as the third …

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

Master's Theses

No abstract provided.

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.

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.

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.

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.

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 …

Gastrointestinal Bacteria Of A Healthy Sheep, Paul Berger

Biology ETDs

Various portions of the gastrointestinal tract of a healthy sheep were sampled to determine the types of bacteria indigenous to the different areas. These portions included the abomasum, duodenum, jejunum, ileum, cecum, ascending colon, spiral colon, and descending colon. A minimum test set technique was developed and used to identify the bacteria. No definite pattern emerged when one region was compared with another region, although the total bacterial count for both the abomasum and the duodenum was less than that of the other locations sampled. Escherichia coli and an infrequent E. freundii were the only enteric bacteria found in the …

Ua77/1 Western Alumnus, Vol. 40, No. 2, Wku Alumni Relations

WKU Administration Documents

Quarterly magazine created for WKU alumni. Regular features are Hilltopics, Sports, Alumni Newsgrams and Notes and In Memoriam. This issue includes:

• Graduate School (College) is On Its Way
• Evening Class is Thataway
• The Hilltopper Hundred to the Rescue
• ETV - Keep Watching, It's All in Color
• Student Interns Learn How Government Works
• Significant Statements: The New Year Begins
• Good News for Fishermen: Reservoir Research
• There it Was! Your Homecoming - 1971
• Performing Arts Illuminate the Campus Scene
• Discovery 1 - Uncovering the Kentucky of Antiquity
• Discovery 2 - Reviving the Heritage of Kentucky
• Discovery 3 - The Intercultural Studies Program …

Absorption And Translocation Of Chelated Iron By Barley And Rice, Ching-Chang Eugene Li

Biology ETDs

A study was made of iron absorption and translocation in the Mimi variety of barley and the Saturn variety of rice. Various iron chelates were used as sources of iron in nutrient solutions. Radioactive iron was used in some experiments to investigate absorption and translocation of iron in both plant species.

Plants were grown in nutrient solutions with different levels of iron to compare the chlorophyll content, dry weight and iron content in shoots and roots. It was found that iron deficiency decreased chlorophyll content and iron content in tissue and also decreased growth of the shoots and roots. An …

The Constant Estrus Rat As A Source Of Viable Ova, John C. Drake

Morehead State Theses and Dissertations

A Thesis presented to the faculty of the School of Sciences and Mathematics at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by John C. Drake, Jr. on September 10, 1971.

Extracellular Production Of Coagulase, Deoxyribonuclease Acid Phosphatase, Alkaline Phosphatase, And Lipase By Staphylococcus Aureus, Robert Lee Nelson

Biology ETDs

The activity of extracellular coagulase, deoxyribonuclease, acid phosphatase, alkaline phosphatase and lipase for 10 strains of Staphylococcus aureus was investigated. The enzymatic activities were also tested for the presence of a specific enzyme inactivator. The relationship of EH and cell density to the five enzymes was also studied.

The extracellular enzymes used in these experiments were prepared by removing cells by centrifugation from the broth of O, 6, 12, 24, 36, 48, and 60 hr cultures. Cell numbers were determined by the standard plate count method. Inactivation of specific enzymes was measured by mixing equal volumes of 6 hr broth …