Zoology Commons^™

Population Dynamics Of Microtus Ochrogaster In Eastern Kansas, Michael S. Gaines, Robert K. Rose

Biological Sciences Faculty Publications

Four eastern Kansas populations of the prairie vole, Microtus ochrogaster were live trapped from 1970—73 to gain insight into the population regulation of this species. All four populations exhibited a 2—yr cycle in numbers with peak densities generally occurring in June 1972. Peak densities were followed by a decline in numbers, a recovery, and a population crash in spring 1973. Reproductive parameters changed dramatically as density rose and fell. The summer breeding season in the crash year of 1973 was shortened by at least 3 mo. A reduction in breeding activity occurred during the summer of every year of the …

Morphological And Ecological Relationships Of Etheostoma Caeruleum And Etheostoma Spectabile In West Central Indiana, Dennis E. Clark

All-Inclusive List of Electronic Theses and Dissertations

Etheostoma caeruleum Storer and Jii. spectabile (Agassiz) are closely related members of the family Percidae, subfamily Percinae, tribe Etheostomatinae. This group, consisting mostly of small, brilliantly colored darters, has been partially characterized by Collett ( 1963). Several papers have been published dealing with the biology of these two species. One or both species have been described by Storer (1845), Agassiz (1854), Reeves (1907, but see Trautman, 1930), Trautman (1930, 1957) Knapp (unpublished Ph.D. dissertation), Distler (1968), and others. Trautman (1930, 1957) Gerking (1945), and Hubbs and Lagler (1947) reported that h caeruleum lives in larger and faster streams, whereas JL_ …

The Effects Of Age And Induction On Cockroach Mixed Function Oxidase Activity And Cell Morphology, Richard L. Turnquist

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Female American cockroaches showed definite age-dependent changes in levels of activity of the microsomal mixed function oxidase chain. Cytochrome P-450 levels, EPN-detoxication, and p-nitroanisole O-demethylation activities were very low in young adult insects but increased steadily reaching a peak at about 100 days in fat body and at about 90 days in midgut and hindgut. The activities then declined rapidly reaching levels of young insects at about 130 to 140 days of age. NADPH-NT-reductase activity was high in young insects and declined during the first few weeks of adult life. This activity too showed a peak at about …

An Electrophysiological Study Of The Oral Plate Sensory Organs Of The Honey Bee (Apis Mellifera L.), Rodney R. Seeley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The oral plate sense organs of the honey bee, Apis mellifera L., have been investigated employing an electrophysiological technique which allows simultaneous stimulation and recording.

The results of the study present evidence that the four bipolar sense cells innervating the sensory papillae on the oral surface of the hypopharynx are chemoreceptors. The sensory papillae respond to cations, glucose, water, and amino acids. Evidence for the absence of a mechanosensory cell is presented. The data concerning the sensory structures agree with the current theories of chemoreception.

Isolation And Characterization Of Autosomal Male Sterile Mutants In Drosophila Melanogaster, Lynn J. Romrell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In order to study the genetic control of spermiogenesis, recessive, male-sterile, autosomal mutants of Drosophila melanogaster were induced with ethyl methanesulfonate. A total of 31 mutants were recovered, 15 of which were located on the second chromosome and 16 on the third chromosome. Eight second- and 6 third-chromosome mutants demonstrating sterility in all homozygous males were used for further analysis.

Complementation tests showed that 2 of the 8 second chromosome mutants (and none of the 6 third chromosome mutants) were noncomplementing, indicating that two of the mutants produced were alleles of the same locus. Mapping of the second chromosome mutants …

The Development Of The Endogenous Stages Of Eimeria Ninakohlyakimovae (Yakimoff And Rastegaieff, 1930) In Domestic Sheep, Richard S. Wacha

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Forty-five mixed breed lambs, 1 to 4 months of age, were used to study the patent period and endogenous stages in the life cycle of Eimeria ninakohlyakimovae. The lambs were inoculated with oocysts of this species and killed at daily intervals from 1 through 14 days after inoculation. From all lambs of the study sections of intestinal tissue were prepared by routine methods for histological examination.

E. ninakohlyakimovaewas observed to have 2 generations of schizonts in its endogenous development. Mature, first-generation schizonts had an average diameter of about 290 μ and had many thousands of merozoites, averaging 11.9 …

Growth Of Eimeria Alabamensis From Cattle In Vitro And The Changes In Fine Structure Associated With Schizogony, J. Robert Sampson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Monolayer primary cultures of cells from bovine embryonic intestine (BEint), kidney (BEK), spleen (BES), and thyroid (BET) and cell line cultures of embryonic bovine trachea ( EBTr) and synovium (BESy)as well as established cell line cultures of Madin-Darby bovine kidney (MDBK), human intestine (Int 407), and Syrian hamster kidney (BHK-21) were inoculated with freshly excysted sporozoites of Eimeria alabamensis and observed for 4 days. Sporozoites penetrated all cell types during the first 24 hours in culture. Numerous intracellular sporozoites, trophozoites, and binucleate schizonts were seen in all cell cultures except Int 407. The best development occurred in BES and MDBK …

A Balanced Salt Culture Medium For Halteria Grandinella, Yee Wan Mark

All-Inclusive List of Electronic Theses and Dissertations

The animals that the writer worked with liere the unicellular organisms called liaJ,tez:ia grandil.!iilJ.a• They belong to the Pl~lum Protozoa and are placed in the Class Ciliata and the Order Oligotrichia. llftltez'A gDJ}gini•U, like most protozoa, ll ve in waters but they seem to prefer qUiet pools, lakes, and ponds in which aqua i;;!c plants are growing and in which there is much organic matter.

An Examination Of A Putative System For The In Vitro Synthesis Of Drosophila Tryptophan Pyrrolase, John P. Phillips

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A system, reported by Morrison (1964), for the in vitro synthesis of Drosophila tryptophan pyrrolase has been critically studied. This putative system is based on the addition of a Drosophila "RNA" extract to a Drosophila cell-free protein synthesizing system; the synthesized enzyme is then allowed to catalyze a specific reaction, the product of which is measured by direct adsorption.

The results of this study present a three-fold argument against the interpretation of synthesis of tryptophan pyrrolase in the Morrison in vitro system: (1) RNA from a null-allele, v^36f, stimulated the same tryptophan pyrrolase "activity" in the in vitro …

The Initiation Of Infection By Dna From Bacteriophage Lambda, Gerald D. Elseth

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Deoxyribonucleic acid isolated from bacteriophage λ can infect Escherichia coli K12 in the presence of adsorbed helper phage (Kaiser and Hogness, 1960; Kaiser, 1962). The manner in which λ DNA enters the cell and the possible role of helper phage in the penetration process is still not clear. Kinetic studies conducted in this laboratory during the initial stages of infection by λ DNA demonstrate a requirement for helper function during the penetration of an infectious molecule. Further investigation into this problem is needed and was the major objective of this study.

Some Factors Affecting The Utilization Of Space By Mice Of The Genus Peromyscus, Howard D. Orr

Journal of the Minnesota Academy of Science

No abstract provided.

Notes On Diurnal Movement, Of Minnows In Shallow Waters Of A Bog Lake In North Central Minnesota, Arthur R. Peterson

Journal of the Minnesota Academy of Science

No abstract provided.

Notes On Some Leeches (Hirudinea) From The Yukon Territory, Canada, And Alaska, M. M. Keith

Journal of the Minnesota Academy of Science

No abstract provided.

A Method Of Demonstrating Corneal Mitosis (After The Method Of Gay And Kaufmann), Ernest Swanson, Shirley P. Miller

Journal of the Minnesota Academy of Science

No abstract provided.

Hive And Field Mortality Of Honey Bees In Northern Utah Due To Effects Of Certain Ecological And Chemical Factors, Shih Chun Ma

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The honey bee is the most important pollinating insect in Utah, because various important crops such as fruits, legumes, and vegetable seed crops depend chiefly on it for pollination. In the past, honey bees have suffered repeated severe death losses through contact with arsenic and other agricultural chemicals. Recently the newer insecticides, such as DDT, chlordane, parathion, benzene hexachloride, lindane, toxaphene, and several kinds of miticides have further complicated the problem of bee survival. In addition, natural enemies such as predators and parasites and some unfavorable environmental conditions, including unfavorable temperature and humidity, wind, storm, and other changeable weather conditions, …

Trypanosoma Barbari, A New Species From The Newt Triturus Torosus, Donald Lewis Lehmann

University of the Pacific Theses and Dissertations

Whlle making studies of the parasites of fishes and amphibians at the Pacific Marine Station, Dillon Beach, California, during August, 1949, the writer encountered a hitherto unreported trypanasome from a female Triturus torosua. From the information obtained from the one smear, which was stained, the animal was presumed to be monomorphic, However, during February, 1950, a search was made expressly for the purpose of' obtaining specimens of this Pacific Coast newt, and of the eight animals examined six were parasitized. Contrary to the primary observations, evidence was accumulated which proved beyond any doubt that the flagellate is polymorphic and that, …

The Effect Of Formalin On Futhering Delayed Separation Of Conjugating Paramecium Aurelia, Willard Casper Jordan

Tennessee State University Alumni Theses and Dissertations

No abstract provided.

The Influence Of Vitamins B1- And D-Deficient Diets On Albino Rats Infected With Labyrinthitis, George Hull Jr.

Tennessee State University Alumni Theses and Dissertations

No abstract provided.

Some Technique Methods For Preparing Slides Of The Paramecium, Irene Padley

Bachelors’ Theses

Du Jardin (1835) was probably the first to recognize in protozoa, living substance. To this substance, he applied the word sarcode. In 1861, Max Schultze expressed the idea that sarcode and protoplasm are the same thing.

A Study Of The Digestive System In The Sparrow (Passer Domesticus), Henry Joseph Wisniewski

Bachelors’ Theses

The digestive tube proper of the Sparrow beings with the Oesophagus. This is a soft tubular organ which serves to convey food rapidly from the pharynx to the stomach. It extends along the median ventral margin of the neck lying dorsal to or to one side of the trachea. Posteriorly, at the base of the neck and shortly in front of the sternum it broadens slightly and gives rise to a dilated region of the oesophagus, namely the Crop, "whose secretion serves to moisten the food or even to initiate digestion." In larger birds as in the pigeon, the crop …

A Study Of The Anatomical Structure Of The 6mm Wall-Eyed Pike, Richard E. Roche

Bachelors’ Theses

The following is a detailed study of the 6 mm Wall-eyed Pike. The organs and organ systems are presented and discussed in the same serial order that they appear in the embryo beginning at the anterior end and proceeding posteriorly. There has apparently been very little work done on the embryology of the Wall-eyed Pile for the literature contains only one article that is even closely related to this problem. In 1890 Reighard made a general study of the development of the Wall-eyed Pike from the time of fertilization to the fully grown adult. He did not, however, make any …

Deer Inventory Studies In Minnesota, Gordon Fredine

Journal of the Minnesota Academy of Science

No abstract provided.

A Study Of The Variations In The Growth Of Blue Grama Grass From Seed Produced In Various Sections Of The Great Plains Region, Andrew Riegel

Master's Theses or Doctor of Nursing Practice

During the past 7 years the Great Plains Region, with its "dust bowl", has been the scene of unparalleled activity in the fields of range management and erosion control. The people of this short grass area are extremely conscious of the need for a sound, practical program of conservation that will revegetate the wasted pasture and cultivated land, which will aid materially in preserving the eroding soil. Many problems have arisen as the program of conserving the soil and the vegetation has progressed.

A History Of The Changes In Population Of Certain Mammals In Western Kansas, Floyd L. Carter

Master's Theses or Doctor of Nursing Practice

This particular study has been restricted to certain mammals in western Kansas, including some on which there is little information, and others which observers would be most likely to notice in everyday life. For several years the writer has been vitally interested in the animal life in Kansas. Therefore, when the need for a study of western Kansas mammals was presented to him in the summer of 1936, the problem of this study was selected. It is hoped that this report will suggest to ecologists, historians, and others, further studies, including reasons for the changes here-in shown. What have been …

A Peripheral Vascular System As Seen By Means Of A Clark Window In The Ear Of The Rabbit, T. H. Seldon, R. H. Barrett, H. E. Essex

Journal of the Minnesota Academy of Science

No abstract provided.

A Key To Snakes Of Minnesota, Milton D. Thompson

Journal of the Minnesota Academy of Science

No abstract provided.

Light And Pituitary Activity In The Bird, Adolph R. Ringoen

Journal of the Minnesota Academy of Science

No abstract provided.

The Growth Rate Of Wall-Eyed Pike (Stizostedion Vitreum (Mitchill) In Various Lakes Of Minnesota, Samuel Eddy, Kenneth Carlander

Journal of the Minnesota Academy of Science

No abstract provided.

A Study Of The Structure Of Hair As A Means Of Mammal Identification, Earl R. Oyer

Master's Theses or Doctor of Nursing Practice

The hair of small and medium sized mammals is often found in the stomachs, feces and pellets of predators , for example in the stomachs and feces of coyotes and in the pellets regurgitated by hawks and owls. These pellets produced by hawks and owls and the feces of mammalian predators are the undigested residue of what these animals have eaten. If the hair from these sources can be identified, then much desirable information concerning the food of predators can be obtained. The purpose of this study has been to determine whether or not such identification is possible.

Studies In Breaking The Rest Period Of Grass Plants By Treatments With Potassium Thiocyante And In Stimulating Growth With Artificial Light, Harold R. Shepherd

Master's Theses or Doctor of Nursing Practice

There has developed a need for a practical means of artificially breaking the rest period and of stimulating the growth of grasses so that sods can be procured early in the fall before freezing weather, brought into the greenhouse, and forced early to make an abundant vegetative growth. This need suggested the study of which this paper is the report, namely to discover whether or not the rest period of native grasses can be broken by treatment with potassium thiocyanate and their growth stimulated by artificial light supplemental to winter daylight.