Life Sciences Commons^™

Distribution Of The Herpetofauna Of Kentucky., Symoine Kamin Laufe

Electronic Theses and Dissertations

Although the herpetofauna of Kentucky is extensive and varied. it has received much less attention than that of most other states. Many herpetologists have reported on various phases of the state's amphibians and reptiles, but for the most part these reports are discrete, either pertaining to a collection, or a generic or specific study. Hence, there is no single adequate work which aptly describes the herpetology of Kentucky as a whole. When one realizes the keystone position of Kentucky in relation to northern and southern forms, the need of a zoogeographical summary of the state becomes even more apparent. Therefore, …

A Study Of The Effects Of Some Chemical And Physical Factors On Plankton In An Artificial Lake, Archie Garnett Smither

Master's Theses

It has been well established that chemical and physical factors exert a marked effect upon the plankton population in bodies of water. However, the literature reveals the fact that the same chemical and physical factors not only produce a different effect upon plankton in different bodies of water, but are not consistent in their effects upon plankton in like bodies of water. For example, Birge and Juday (1911) made a study of 150 lakes, not widely separated in distance or varying in topographic conditions. These lakes were also of the same age, yet all were individual as to the amount …

The Development Of The Megagametophyte Of Zea Mays Variety Golden Bantam Hybrid, William Richard Widner

Biology ETDs

Ever since the first publication, in 1919, on megasporogenesis in Zea mays, some confusion has existed regarding the detailed sequence of certain changes in the development of the megagametophyte. The present study was made in an attempt to clarify such disputed points.

Studies Of Increment, Height-Weight, And Moisture Content Of Important Western Kansas Grasses, John Launchbaugh

Master's Theses or Doctor of Nursing Practice

A logical approach to the question of how much forage is taken by livestock would be, it seems, to study first the growth habits of the important species of p:i.sture and range grasses in the areas where they are used. The purpose of this report, therefore, was to study the development of several species of perennial grasses in the mixed prairie of west-central Kamas from near the beginning of the grazing season until the grasses had reached maturity.

The Ecology Of A Pasture In The Dakota Sandstone Formation In Ellsworth County, Kansas, Byron O. Blair

Master's Theses or Doctor of Nursing Practice

The vast area of prairie of the United States has long been known as the "feeding grounds" for herbivorous animals. In the past, the standard of living of the people of grassland regions has been measured largely by the ability of the native ranges to produce ·vegetation sufficient to maintain economical livestock production. It has become apparent that if our desired living standard is to be maintained, we must direct our efforts toward a program by the most rapid and efficient means possible, which will bring economic stability to the seventeen million acres of grassland in the Great Plains region. …

The Construction Procedure Of The Saline River Habitat Group In The Fort Hays Kansas State College Museum, William Raymond Eastman

Master's Theses or Doctor of Nursing Practice

The development of the museum wild life habitat group in recent years has created much public interest here in the College museum many people have expressed a desire to see such a habitat group related strictly to Kansas , particularly Western Kansas . The year of such a group was not particularly expressed, but as preliminary visions developed, it seemed only reasonable that the public would enjoy a glimpse of Kansas in the days when it was making early history . Thus it was decided to design and execute a life-sized habitat depicting the ecological relationship s found between the …

Minor Elements In Plant Growth, Vangy A. Tilton

Biology Honors Papers

This thesis describes the relationship between plants and elements found in the soil and relates an experiment with lead solutions to determine the effect of that ion on plant growth.

A Discussion Of Rodent Circulation With Special Reference To The Chinchilla, Jacqueline A. Klein

Biology Honors Papers

This 29 page thesis describes the attempt to prepare corrosion specimens of the entire vascular system of the chinchilla using a synthetic resin.

Utilization Of Forage Plants And Diet Of Sheep On Utah Winter Range, Lisle R. Green

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Although there is an abundance of material available concerning forage consumption by livestock on pasture land and in the feed lot, there is relatively little known about the grazing habits and forage preferences of livestock under range conditions. There has been still less scientific effort expended toward solving the riddle of the grazing animal's diet under winter range conditions. Investigators have suggested means to determine the quantity of forage available on range areas, the carrying capacities of range lands, and methods of determining the degree to which forage has been utilized. The diet of the foraging animal is affected by …

Study Of The Nuclear Behavior In The Basidia And Basidiospores Of Schizophyllum Commune Fries, Howard George Ehrlich

Bachelors’ Theses

Schizophyllum commune Fries is a member of the Hymeno­ mycetes. This genus has long intrigued mycologists because of the peculiar "spliit gills'' it characteristically possesses. For a long time, however, not much importance was attached to the fungus until it was reported from many parts or the world and its. pathogenicity as a wood-destroying agaric established. Despite these facts relatively little is known about the fungus. Perhaps the phase of development most completely described was the development of the "gills", Essig (1922). Because of the location of the hymenium and stipe attachment, Essig (1922) suggested that the fungus more properly …

Processing, Grading And Sale Of Utah Turkeys, 1947-48, Paul R. Grimshaw

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Turkey production in Utah is one of the most important farm enterprises of the state. In 1945, 11.5 percent of the total farm cash income of the state was from the turkey enterprise. In 1946, 9.4 percent came from this source. Turkey production made up 8.9 percent of the total cash income from farm enterprises in 1944; 5.8 percent in 1945; 4.9 percent in 1940; 1.7 percent in 1935; and 1.3 percent in 1930. The objectives of this study were: (1) to ascertain charges for processing and hauling turkeys from the farm to the processing plants; (2) to determine the …

The Emergence And Survival Of Certain Forage Plants When Seeded In A Saline Soil, Devere Richard Mcallister

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Salty soils are recognized as an ever increasing problem connected with irrigation agriculture. Millions have been spent by state, federal and private agencies on technical research in an attempt to solve this problem. Other millions have been spent on drainage projects, land leveling, field explorations and soil amendments attempting to alleviate the situation in the field.

Factors Influencing The Validity Of Pheasant Census Methods, Sevier County, Utah, Eldon H. Smith

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The measurement of animal populations is a most important phase of wildlife management. The initiation of systematic management of any unit of specific game habitat usually involves the measurement of the stock on hand as a primary step. In practice game inventory performs a twofold function; namely, as a medium determining the efficacy of past management practices as a basis for future manipulations and as an aid in the establishment of game protective or removal policies.

A census, in the sense applied in this study, is best defined as the enumeration of a population on a given area at a …

A Curriculum Study Of The Biological Science Courses In The Secondary Schools And College Of Utah During 1947-48, Merrill H. Gunnell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

At the present time there is a feeling among biologists in Utah that there should be improvement in biological science courses and course sequence to better fill the needs of the non technical student. There are many students filling group requirements with an accumulation of courses which may not provide them with the more important fundamental concepts and principles in biology. Information concerning these courses in high schools and colleges in necessary to provide a basis for curriculum revision in the field. Such information should be useful in evaluating the present system and suggesting modifications. Because of the need for …

Nitrogen Content And Protein Yield Of Alfalfa As Influenced By Variety, William H. Bennett

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Twenty-four alfalfa varieties, representing four varietal groups, were compared for nitrogen content and protein yield. A highly significant difference between varieties was noted for nitrogen content, and a significant difference for protein yield. Saskatchewan 666 had the highest content in the first cutting, but Ledak 22009 had the highest content in the third. Group differences were not significant. Crop differences were highly significant for nitrogen content, yield of forage, and of protein. In the case of every variety, the third cutting was richer in nitrogen than the second and the seemed was richer than the first. Protein yield, however, was …

Crop Response To Applications Of Copper Sulfate On Salty Soils, Paul D. Christensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In the arid west large areas of soil contain soluble salts in sufficient concentrations to inhabit crop growth. Of the 1,416,957 acres of soil surveyed in Utah from 1899 to 1920, Jennings et al (29) reported that 43.58 per cent contained 0.2 per cent or more of salts. The management and reclamation of these soils present serious problems. The difficulties are further accentuated by the fact that many streams used for irrigation contain appreciable quantities of salt. Generally under these conditions removal of the salt from the soil becomes impracticable, and the problem is one of learning how to get …

The Effect Of Ddt Residue On The Composition And Digestibility Of Alfalfa Hay, Than Myint

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

DDT (2,2 bis (p-chlorophenyl) 1,1,1-trichloroethane) was first synthesized in 1874 by Seidler in Switzerland, however, its effectiveness as an insecticide was not known until about 1942. The active principle was first known as G.H.B. (Gesarol-Neccid Base): but in 1943 DDT was suggested as an abbreviation for Dichlore Diphenyl Trichloroethane (Kaaegie, 1946). In fact DDT, as a powerful insecticide is one of the developments made during World War II. The importance of DDT in the control of the common insect enemies of mankind, such as mosquitoes, flies, moths, and many agricultural insect pests is realized more day by day. Many studies …

Insect Pests And Predators In Relation To Alfalfa Seed Setting In Southern Alberta And The Effects On These Insects Of Three Chlorinated Hydrocarbons, Gordon A. Hobbs

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Alfalfa-insect investigations, because of necessity, had been neglected in the province of Alberta during the war years. Work was resumed on this project in the spring of 1946 by the writer.

So much progress has been made in the field of insect pest control since the advent of war-born chlorinated hydrocarbons, that it was thought advisable to design an experiment which would test under Alberta conditions the results obtained in Utah where most of this type of research had been previously carried out, and would thus serve to bring investigations in this part of Canada up to date.

It is …

Methemoglobin., Herbert Friedman

Electronic Theses and Dissertations

No abstract provided.

The Yielding Ability Of Bulked F2 Barley Crosses And Parents In Comparative Yield Trials, Walter Lowell Nelson

Electronic Theses and Dissertations

Present methods of breeding new barley varieties are costly, laborious and lengthy. Populations from a cross are grown until they become homozygous before much selection by comparative yield trails can be made. The pedigree method limits the number of crosses that can be studied because of the large segregating populations necessary for the expression of desired gene combinations. Because of the enormous amount of work involved, it would be highly desirable for a plant breeder to work only with superior parental material. The capabilities of a plant breeder would be greatly increased by an method which would allow him to …

A Chemical Method For The Quantitative Estimation Of Volatile Reducing Substances In Certain Fruits And Vegetables, Ruby M. Prigmore

Tennessee State University Alumni Theses and Dissertations

No abstract provided.

The Apparent Digestibility Of Prairie Hay Harvested At Three Stages Of Maturity, Arnold Bernard Nelson

Electronic Theses and Dissertations

More land in the United States is used for grazing and hay production than for all other farm crops grown. Well-managed pastures and rangeland have always been recognized as an economical source of feed and recently have commanded much attention as an effective means of conserving soil resources and preventing erosion. In the states if North and South Dakota, Nebraska, Colorado, Wyoming and Montana, about 67 per cent of the total land in farms and ranches is in pasture and hay. Over 60 per cent of the entire area of South Dakota and about 83 per cent of the area …

Carcass Differences In Inbred Lines And Linecrosses Of Swine, Ellis Andine Pierce

Electronic Theses and Dissertations

A great amount of variation in the carcasses from butcher hogs proximal to two hundred and twenty pounds from different lines and breeds has become apparent in recent years. The average hog producer prefers the type of hog that gains quickly and economically and will net the most profit. The average consumer, however, prefers the type of carcass that has a high percentage of lean to fat. Today the dollar value of market hogs is determined more by the amount of finish they are carrying than by the quality of carcass. Since variations do exist in the carcasses from different …

A Study Of The Littoral Marine Isopod Crustacea Of The Dillon Beach Area, Robert James Menzies

University of the Pacific Theses and Dissertations

The primary purpose of this study was to provide accurate diagnoses of the littoral marine isopod crustacea in the Dillon Beach area. Such a purpose involved a much more complete study of the anatomy of the species represented in the fauna than was heretofore performed. Certain anatomical structures deemed by earlier writers as specifically diagnostic are demonstrated to be unreliable and in a great many instances other structures previously neither described or figured by American writers are considered of paramount importance in species identification. The number and magnitude of the changes proposed in this paper as illustrated in outline form …

The Occurrence Of Antibiotic Actinomyces In The Sugarcane Soils Of Louisiana And Their Effect Upon Pythium Root Rot., William Earl Cooper

LSU Historical Dissertations and Theses

No abstract provided.

A Study Of The Pattern Of Scale Development In Salmo Clarkii Spilurus Cope, Josephine Hawrylko

Biology ETDs

One of the phases of fish investigation is to determine the pattern of scale development is fishes. The problem deals with a study of the gross development of scales and their distribution over the body in Salmo clarkii spilurus Cope, Rio Grande Cut-throat trout. "This trout is known only from the upper Rio Grande basin and southward into the mountains of Chihuahua." The Cut-throat trout is a member of the Family Salmonidae and often goes under such common names as black spotted trout, mountain trout, New Mexico native trout, red-throat trout and various other titles.

The Effect Of Varying The Phosphate Content Of Commericial Fertilizer For Certain Garden Crops In The College Garden, 1947, Hazo William Carter

Tennessee State University Alumni Theses and Dissertations

No abstract provided.

The Importance Of The Spleen In Antibody Formation, Carl Frederick Cramer

Biology ETDs

It was the purpose of the phase of the investigation to ascertain:

(1) If there is a significant difference in infection or fatalities among splenectomized animals.

(2) If splenectomized animals can form antibodies, and to what degree.

Effects On Different Intensities Of Utilization Upon The Underground Parts Of Short Grasses In West Central Kansas, Farrel Branson

Master's Theses or Doctor of Nursing Practice

Work on root systems of forage plants has indicated that a knowledge of root relationships is fully as important in determining the actual conditions of ranges or pastures as is knowledge of the effects of grazing upon aboveground portions of plants. This is especially true in arid or semiarid regions since plants of these areas are frequently subjected to long periods of drought, high temperatures, and high wind velocities. Some xeric plants have a thickened cuticular layer, stomates that open only at night, and other mechanisms that prevent loss of water that is absorbed by the roots. However, in plants …

A Descriptive Analysis Of The Musculature And Osseous Systems Of The Kangaroo Rat, Dipodomys Ordii, Virgil Mathis

Master's Theses or Doctor of Nursing Practice

The kangaroo rats constitute the only genus, Dipodomys, of the subfamily Heteromyinae, now extant . There is fossil evidence of two other genera which are now extinct. The kangaroo rat, Dipodomys ordii richardsoni, is one of the common rodents of western Kansas . According to Hibbard (3, p. 76), "Its range extends northeastward along the Kansas river into Riley County." These animals are easily distinguished from other rodents by their long tail, long hind legs and feet, small hands, fur lined external cheek pouches, and their saltating method of locomotion. These rodents are seldom seen by the casual observer, being …