Life Sciences Commons^™

Determination Of The Ld-50 Level For 2,4-D On Wild Type Culex Pipiens Mosquito Larvae In Illinois, William H. Ettinger

Masters Theses

The LD-50 levels for 2,4-D and Ronnel were determined and compared on the larvae of Culex pipiens Linneaus mosquitoes. The World Health Organization technique for the 24 hour bioassay was employed. Ronnel served as an indicator of susceptibility to pesticides and it was found that 2,4-D is toxic to mosquito larvae with an LD-50 level of 1.95 p.p.m. It was also found that a concentration of 20 p.p.m. ethanol or greater causes lethality in the larvae.

Megasporogenesis And Early Embryogeny Of Sanguinaria Canadensis L. (Bloodroot), Stephen R. Foor

Masters Theses

No abstract provided.

The Morphology And Cytology Of Preussia Vulgare (Corda) Cain, Marcial Antonio Pastor-Corrales

Masters Theses

No abstract provided.

Effect Of Speed Of Muscle Contraction On Strength Improvement, Terry Alan Dieckhoff

Masters Theses

No abstract provided.

Defensive Behavior Of The Hognose Snake (Heterodon Platyrhinos), Brenda S. Hemken

Masters Theses

Fourteen out of sixteen Heterodon platyrhinos eggs were hatched in late August, 1973. The immature snakes were manually stimulated and the resultant bluffing and death-feigning behaviors were observed. All of the experimental snakes bluffed, but only three out of ten feigned death. The major components of the bluffing behavior are spreading the neck, hissing, and striking. Death-feigning is preceded by contortions and shows variations in the positions of the mouth and tongue. The newly-hatched snakes exhibited both bluffing and death-feigning, indicating that the behaviors are innate.

Vascular Vegetation Of Moultrie County, Illinois, Larry M. Dennis

Masters Theses

No abstract provided.

A Survey Of Blood And Intestinal Parasites Of Peromyscus Leucopus And Microtus Ochrogaster In Coles County, Illinois, James William Matthews

Masters Theses

The purpose of this study was to isolate and identify blood and intestinal parasites from Peromyscus leucopus and Microtus ochrogaster in Coles County, Illinois and to calculate the rates of infection based on age, weight, and sex of the hosts.

The Corticolous Mosses Of East-Central Illinois, Daniel J. Royse

Masters Theses

No abstract provided.

Some Ethnically Important Herbaceous Plants Of East-Central Illinois, John E. Jester

Masters Theses

No abstract provided.

Pesticide Effects In A Simulated Soil Ecosystem, Raymond J. Samp

Masters Theses

The screening of pesticides to determine which were most inhibitory to bacteria was accomplished by testing the effects of 10 pesticides on 9 different organisms using the disk assay method. Results showed that Gram positive bacteria were more sensitive to all pesticides tested than were the Gram negative bacteria. In addition, the hormone herbicides were found to be the most inhibitory to these bacteria and 2,4-D (2,4-dichlorophenoxyacetic acid), a hormone herbicide, was chosen for subsequent in vivo studies.

A soil perfusion apparatus was used to determine the effects of 2,4-D in a typical soil ecosystem. Bacterial plate counts and nutrient …

The Forests Of Coles County, Illinois, David R. Sampson

Masters Theses

The purpose of this investigation has been to organize and compile a relevant body of information concerning the forested land within Coles County. The methods employed in conducting this study consisted of library research, field work, interviews, and the use of a questionnaire. The questionnaire was designed to determine how the forest landowners were utilizing their forests. A random sample of the forest landowners of each township within Coles County was conducted. In addition to the questionnaire, which was the primary source of detailed information relating to forest utilization, there were interviews with the county farm cooperative extension agent, the …

A Survey Of The Water Quality And Fishes Of Rocky Branch Nature Preserve, Clark County, Illinois, Larry J. Decker

Masters Theses

No abstract provided.

An Introduction To The Ethology Of Citellus Variegatus, John W. Bell

Masters Theses

The above ground activity of the rock squirrel Citellus variegatus between November 6, 1972 and May 1, 1973, is described. This is a non-colonial species. Recognition was established between siblings by a nose to nose contact. In foraging they utilize almost any edible material available and during this time of year foraging is most intense between 11:00 a.m. and 4:00 p.m. Vocalization was limited to alarm calls, which brought the other squirrels to the top of the rocks to become alert, and squeals. Hibernation varied in length depending in part on the elevation and in some did not occur at …

The Water Quality And Benthic Macroinvertebrate Fauna Of Lake Charleston, Coles County, Illinois, Paul Barding

Masters Theses

The benthic macroinvertebrate fauna and 15 water quality parameters for five sites on Lake Charleston, Coles County, Illinois were examined for 26 weeks from March 14 through September 5, 1974. None of the water quality parameters studied showed sufficient deviations at any particular area on the lake to merit demarcated water quality zonation. The lake, with its continuous mixing and shallow depth, represented a fairly stable and continuous environment. The benthic macroinvertebrate fauna was determined as fairly diverse and some indication of seasonal variation was apparent. No significant compositional variation over different areas of the lake was found, also indicating …

Rate Of Growth As A Method Of Assessing Water Quality, George L. Johnston

Masters Theses

A study of the Embarras River basin was conducted to determine if rate of growth could be used as an indicator of water quality. Six species of sucker were collected from five locations using hand seines and electrofishing gear from December 1970 to December 1971. Tests of eighteen water quality parameters were conducted from November 1970 to November 1971.

The fish were measured and scale samples taken. The rate of growth of the fish taken at the five stations was analyzed and compared using the single classification analysis of variance. Condition factors were also compared.

Although there was some difference …

The Effect Of Walking And Jogging On Selected Cardio-Respiratory Parameters Of Middle-Age Men During The Initial Phase Of A Training Program, Monsuru Lasun Emiola

Masters Theses

No abstract provided.

Status Of The Wild Turkey In Southwestern Illinois In 1970, Robert Merle Cottingham

Masters Theses

Wild-trapped turkey were first released in southwestern Illinois in 1959. This, and subsequent releases have established a huntable population of wild turkey in the area. Until 1970, no evaluation of the status of the bird had been made. This study was conducted in June, July, August and September, 1970, to determine the distribution, productivity and relative abundance of the wild turkey in Alexander, Jackson, Union and Williamson Counties and to make recommendations for future management of the population. Information was supplied by rural mail carriers, Illinois Department of Conservation and U. S. Forest Service personnel and local residents together with …

Helminth Parasites Of Illinois Wild Turkeys, James W. Jackson

Masters Theses

Viscera from 69 wild turkeys (Meleagris gallopavo silvestris) collected from Jackson, Union and Alexander counties, Illinois, were examined for helminth and coccidian parasites. A total of eight species of parasites was found, all in the alimentary tract. The coccidian parasite Eimeria sp. was found in 9.6% of birds examined. The nematodes Heterakis gallinarum, Ascaridia galli and Ascaridia dissimilis were found in 13.2%, 27.9% and 48.5% respectively of all birds examined. Three species of cestodes, Raillietina williamsi, Metroliasthes lucida and Hymenolepis sp., were recovered from 41.1%, 27.9% and 1.4% respectively of birds examined. One species of trematode, …

The Effect Of Thermal Increases On The Acute Toxicity Of Copper And Hexavalent Chromium To Channel Catfish (Ictalurus Punctatus), Alan Kirk Millis

Masters Theses

48-hr, 96-hr, and incipient median tolerance limits of channel catfish (Ictalurus punctatus Rafinesque) to copper and hexavalent chromium were determined at temperatures of 50, 60, 70, and 80 F. Standard static bioassay procedures were used. The incipient TLm for copper ranged from 0.56 ppm to 2.15 ppm and from 22.5 to 39.5 ppm for hexavalent chromium. The 48-hr and 96-hr results were somewhat higher. The highest resistance for both metals occurred at 70 F. At 80 F, however, there was a sharp decrease in tolerance. Increased oxygen consumption and opercular movement offer a possible explanation since they would …