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Articles 1171 - 1200 of 1550
Full-Text Articles in Life Sciences
A Population Study Of The Cave Beetle Neaphaenops Tellkampfi (Coleoptera, Carabidae) In Mushroom Cave, Hart County, Kentucky, Robert E. Bon Durant Sr.
A Population Study Of The Cave Beetle Neaphaenops Tellkampfi (Coleoptera, Carabidae) In Mushroom Cave, Hart County, Kentucky, Robert E. Bon Durant Sr.
Masters Theses
A two year census of the cave beetle Neaphaenops tellkampfi (Coleoptera, Carabidae) was conducted in Mushroom Cave, Hart County, Kentucky. Three methods were used to estimate populations of this beetle. A rise in population in certain areas of the cave was shown to occur in Mid-winter. The population as reported is felt to represent a portion of a much larger population which migrates toward the cave entrance beacuse of food shortages in winter with a summer movement back into deep cave habitat when the eggs of Hadenoecus subterraneus are plentiful.
The Biodegradation Of Crude Oil By Bacteria Isolated From Brine Pits, Larry Williams
The Biodegradation Of Crude Oil By Bacteria Isolated From Brine Pits, Larry Williams
Masters Theses
The biodegradation of crude oil by bacteria was studied. Hydrocarbon-utilizing bacteria were isolated from sixteen brine pits from an oil producing region of Clark County, Illinois. The bacteria were capable of growth from the vapors arising from crude oil as a sole carbon source. Some strains of bacteria were capable of emulsifying crude oil, apparently through the production of an emulsifying agent(s) that was found to be heat stable and cell bound but which can be partially stripped from the cell by autoclaving. The bacteria appear to belong to the genus Arthrobacter. The chemical environment of the pits was …
A Comparison Of The Effects Of Two Therapeutic Exercises On The Muscle Action Potential Of The Vastus Medialis, Janet J. Lozar
A Comparison Of The Effects Of Two Therapeutic Exercises On The Muscle Action Potential Of The Vastus Medialis, Janet J. Lozar
Masters Theses
Electromyography was utilized to compare the effects of two therapeutic exercises at two work loads in knee extension on the muscle action potential in the vastus medialis. One exercise was extension to 180 degrees with a four second isometric hold and flexion to 90 degrees. The other exercise was extension to 180 degrees, 15 degrees flexion, 15 degrees extension and flexion to 90 degrees. Each exercise lasted for 10 seconds.
The subjects in the study were 11 varsity female athletes from the fall and winter interscholastic athletic program at Eastern Illinois University. The subjects met for the first time to …
Translocation Of C14-Labeled Assimilates In Squash Petioles, William John Raupp
Translocation Of C14-Labeled Assimilates In Squash Petioles, William John Raupp
Masters Theses
A qualitative analysis of sieve tube sap was undertaken to help determine the method of assimilate movement in phloem. Hydroponically-grown squash plants (Cucurbita melopepo torticollis Bailey) were trimmed to a mature, fully-expanded leaf (the source) and one or more immature, unexpanded leaves (the sinks). The blade of the source leaf was exposed to C14O2 in air for 10 minutes and allowed to translocate for 20 or 50 minutes in ambient air. Petioles of treated leaves were cut into sections and ground in cold buffer with a chilled mortar and pestle to extract materials from the translocation stream. …
Notes On Seasonal Variation And Infectivity Of Haemogamasus Reidi, A Vector Of Hepatozoon Griseisciuri, On Eastern Gray Squirrels, Sciurus Carolinensis, Mohammed Bashiru
Notes On Seasonal Variation And Infectivity Of Haemogamasus Reidi, A Vector Of Hepatozoon Griseisciuri, On Eastern Gray Squirrels, Sciurus Carolinensis, Mohammed Bashiru
Masters Theses
Five hundred and twenty-two squirrels were trapped and retrapped from a population in Montgomery County, Maryland during 1974-1975. One hundred and forty-one squirrels were found to harbor an average of 10.6 mites (Range 175-1). While male squirrels outnumbered females (79 vs 62) females harbored more mites than males (829 vs 666). During the spring the average number of mites per captured squirrel increased to an average of 18.1 per squirrel. The average declined to 6.8, 4.8 and 3.3 per squirrel in summer, fall and winter respectively. Throughout the collection period adult female mites were by far more numerous on hosts …
Habitat Utilization And Partitioning Within A Community Of Nesting Grassland Birds, John E. Buhnerkempe
Habitat Utilization And Partitioning Within A Community Of Nesting Grassland Birds, John E. Buhnerkempe
Masters Theses
No abstract provided.
Siderocapsa Major-- Fact Or Artifact?, Ray W. Swanson
Siderocapsa Major-- Fact Or Artifact?, Ray W. Swanson
Masters Theses
The validity of the genus Siderocapsa, a group of unicellular iron-depositing bacteria, has been a subject of debate for many years. Lack of photomicroscopic and cultural studies has kept this group in taxonomic obscurity. Bacteria were collected from the Campus pond, Eastern Illinois University, Charleston, Illinois, by a submerged slide/coverslip technique. These bacteria were identified as Siderocapsa major according to the description of Molisch (1909). Scanning electron microscopy of Siderocapsa major microcolonies has shown cells (0.5 by 1.15 μm), in a clear central well (2-6 μm), surrounded by an amorphous material which accumulates with the age of the colony. …
A Taxonomic And Ecological Study Of The Cladonia Species Of The Central Portion Of Fox Ridge State Park In Coles County, Illinois, James L. Jannesse
A Taxonomic And Ecological Study Of The Cladonia Species Of The Central Portion Of Fox Ridge State Park In Coles County, Illinois, James L. Jannesse
Masters Theses
Extensive collections were made on the central ridge system at Fox Ridge State Park in Coles County, Illinois. A literature review of the works on the genus Cladonia in North America encompassed major taxonomic collections undertaken in the last 20 years. Also, a historical account on the developments in the Cladonia chlorophaea complex are listed. Basic Cladonia morphology is described, including both microscopic and macroscopic illustrations. The study area was subdivided on a grid system, enabling the collection sites to be numbered. The entire area was covered in two foot intervals. From every entity that was found, ¼ of it …
Leaching Of An Acetanilide Herbicide, Cp55097 In Soil Columns, Regina K. Higgins
Leaching Of An Acetanilide Herbicide, Cp55097 In Soil Columns, Regina K. Higgins
Masters Theses
The leachability of the acetanilide herbicide, CP55097 was determined using a soil column system. This herbicide, which is used as a preemergent against certain grasses and broadleaf weeds, was leached through four different soils (sandy clay, sandy loam, sandy clay loam and clay loam) using the following procedure. Plastic columns consisting of 8 rings (2 in. dia. x 1 in.) were assembled and their bottoms covered with cheesecloth. They were then filled with soil and prewetted with water to attain field capacity. Herbicide concentrations equalling 0, 1, 3, 6 lb/A were pipetted onto the soil surface and 0, 1, 2, …
Biosystematic Studies Of Impatiens Pallida And Impatiens Biflora (Balsaminaceae), Sandra M. Buening
Biosystematic Studies Of Impatiens Pallida And Impatiens Biflora (Balsaminaceae), Sandra M. Buening
Masters Theses
Impatiens pallida Nutt. and Impatiens biflora Walt. are two closely related species which grow together in mixed populations but do not hybridize. Flower buds of each species were enclosed with glycine bags to prevent insect pollination. These were left isolated until after anthesis to test for self-pollination and self-compatibility. Neither capsule formation nor seed set were observed.
Chromosomal smears showed that each species has a haploid number of ten chromosomes. Polyploidy was not observed.
Field observations of insect pollinators (primarily bees) showed indiscriminate visitation.
Flower buds were again bagged as before. During anthesis, individuals of the two species were cross-pollinated …
Bacteriophage Populations In Wastewater Effluent, Guy William Lawrence
Bacteriophage Populations In Wastewater Effluent, Guy William Lawrence
Masters Theses
Effluent samples were taken at various stages of sewage treatment at a local wastewater treatment plant. Primary, secondary, tertiary and post-chlorinated effluents were sampled. The agar overlay method was used to determine the numbers of plaque-forming bacteriophage particles on thirty-six species of enteric bacteria from the Eastern Illinois University stock culture collection. Twenty-three pure culture phage isolates were prepared from selected plaques and their host range specificity was determined. For every host organism tested, a fifty percent or greater reduction of bacteriophage was evident through the sewage treatment process. Results obtained from investigation of host range specificity indicate that potential …
Chromosomal Variation Of Claytonia Virginica L. In Illinois, Russell Arthur Hintz
Chromosomal Variation Of Claytonia Virginica L. In Illinois, Russell Arthur Hintz
Masters Theses
Thirty-one mass collections of Claytonia virginica were made in eight counties in the eastern half of Illinois. Chromosome counts of pollen mother cells were determined for plants from Richland, Coles, Clark, Douglas, Cook and Moultrie counties. A range of 2n = 8 to 48 was determined with only 4 of the 89 counts being greater than 2n = 30. For all the populations, counts of 2n = 8, 10, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 27, 28, 29, 30, 37, 38, 44, 48 were reported. The two most common counts were 2n = 18 and …
Histology Of Dichromatic And Seasonal Color Change Of The Cranial Region Of Callagur Borneoensis, Kevin William Matson
Histology Of Dichromatic And Seasonal Color Change Of The Cranial Region Of Callagur Borneoensis, Kevin William Matson
Masters Theses
Male Callagur borneoensis exihibit sexual dichromatism and seasonal coloration which is rare among turtles. In the breeding season male's heads are colored white with a scarlet stripe from the occiput to the tip of the snout. After the breeding season they change to drab charcoal-gray to black with a dull orange-yellow stripe. Females and juveniles are a drab brown throughout the year.
This study was performed to determine the mechanisms of this color change at the histological level. Histological preparation of the head revealed a significant increase in vascular tissue just below the epidermis of the stripe area with increased …
Coccidian Parasites Of Wild Turkeys, Meleagris Gallopavo Silvestris, In Illinois, D. Michael Watkins
Coccidian Parasites Of Wild Turkeys, Meleagris Gallopavo Silvestris, In Illinois, D. Michael Watkins
Masters Theses
Fecal samples from 124 wild turkeys (Meleagris gallopavo silvestris), collected in three southern Illinois counties, were examined for coccidia. Three and two tenths percent (4) of the birds sampled were infected with Eimeria of apparently four different species. These species were tentatively designated as: E. meleagridis, E. adendeides, E. meleagrimitis and E. subrotunda.
The Relationship Between Oxygen Debt Size And Blood Ph Change During Recovery From Exercise On The Bicycle Ergometer And Treadmill, Timothy J. Falconer
The Relationship Between Oxygen Debt Size And Blood Ph Change During Recovery From Exercise On The Bicycle Ergometer And Treadmill, Timothy J. Falconer
Masters Theses
It was the purpose of this study to investigate the relationship of oxygen debt and blood pH change during the recovery from exercise.
For this study, ten male members of the Eastern Illinois University track team were chosen as subjects on the basis of their levels of physical condition.
The subjects were tested on three different occasions. The first test for all subjects was a fifteen minute resting oxygen consumption. Then depending upon random selection, the subjects ran on a treadmill and on another test day rode a bicycle ergometer, or vice versa. Preceding each exercise a pre-exercise micro-blood sample …
The Ecology Of Invertebrate Drift And Feeding Chronology Of The Striped Shiner, Notropis Chrysocephalus (Rafinesque) In Polecat Creek, Illinois, Dennis L. Newman
The Ecology Of Invertebrate Drift And Feeding Chronology Of The Striped Shiner, Notropis Chrysocephalus (Rafinesque) In Polecat Creek, Illinois, Dennis L. Newman
Masters Theses
The downstream drift of macroinvertebrates and the daily feeding cycle of the striped shiner, Notropis chrysocephalus (Rafinesque), were studied during the spring and summer of 1978 in Polecat Creek, Illinois. The purpose of the study was to: investigate the drift phenomenon of an entire lotic community, determine the pattern of diel periodicity for several important benthic populations, make qualitative and quantitative assessments of the relation of drift to benthos, and examine drift in relation to the daily feeding ecology of a cyprinid carnivore.
Polecat Creek at the sampling site was a relatively fast-flowing third-order stream, with frequent riffles. Drift sampling …
The Influence Of Food On Induction Of Males In Daphnia Pulex, Paul Henry Schreuder
The Influence Of Food On Induction Of Males In Daphnia Pulex, Paul Henry Schreuder
Masters Theses
Introduction
Daphnia pulex Leydig (Crustacea, Cladocera) is a common component of the zooplankton of freshwater lakes and ponds. Its importance in the aquatic trophic structure as food for small fish has long been recognized.
Typical populations of daphnia consist almost exclusively of females. Under favorable conditions this situation is perpetuated by parthenogenetic reproduction. Eggs produced in this manner are referred to as parthenogenetic or summer eggs. When stressed by falling temperatures, drought, overpopulation, or starvation, populations shift to sexual.reproduction. Parthenogenetic eggs are produced which develop into males. Other eggs known as ephippial or winter eggs are also produced, which after …
Chromosome Behavior And Cytokinesis Of Nezara Sp. And Lygaeus Sp., Mohamed Barka Marwan
Chromosome Behavior And Cytokinesis Of Nezara Sp. And Lygaeus Sp., Mohamed Barka Marwan
Masters Theses
No abstract provided.
The Distribution And Abundance Of Tubificids In The Little Calumet River, Gladys Moreno
The Distribution And Abundance Of Tubificids In The Little Calumet River, Gladys Moreno
Masters Theses
No abstract provided.
An Investigation Of Nitrogen Utilization As A Factor In The Size Selective Feeding Habits Of Lepomis Macrochirus, Stephen M. Hinckley
An Investigation Of Nitrogen Utilization As A Factor In The Size Selective Feeding Habits Of Lepomis Macrochirus, Stephen M. Hinckley
Masters Theses
No abstract provided.
A Survey Of Nine Common Laboratory Compounds As Causative Agents Of Ciliostasis In Tracheal Explants From Mice, Josie Marshall Fletcher
A Survey Of Nine Common Laboratory Compounds As Causative Agents Of Ciliostasis In Tracheal Explants From Mice, Josie Marshall Fletcher
Masters Theses
No abstract provided.
Mammalian Succession On Lake Michigan Sand Dunes, John M. Olson
Mammalian Succession On Lake Michigan Sand Dunes, John M. Olson
Masters Theses
No abstract provided.
The Effects Of Body Size, Hair And Brown Adipose Tissue Upon Fever In The Rabbit, Reginald L. Dean
The Effects Of Body Size, Hair And Brown Adipose Tissue Upon Fever In The Rabbit, Reginald L. Dean
Masters Theses
No abstract provided.
Vegetational Communities On An Abandoned Farm In Van Buren County, Michigan, Larry G. Visser
Vegetational Communities On An Abandoned Farm In Van Buren County, Michigan, Larry G. Visser
Masters Theses
Introduction
Several studies have been made of xeric forests in southern Michigan which have developed through secondary succession following the cutting of the presettlement vegetation. Brewer et al. (1973) described such an area in Allegan County, Michigan which was dominated by presettlement pine and is now dominated by oak. The oak forests of the Harvey Ott Preserve in Calhoun County, Michigan have been described by Catana (1967). Studies of the oak forests in the Haven Hill area in southeastern Michigan have been made by Thompson (1953). In addition to these studies of xeric forests in southern Michigan, extensive studies of …
Investigations Of Possible Allelopathic Effects Of Lycopodium Flabelliforme (Fern.) Blanch., Joan Macuszek
Investigations Of Possible Allelopathic Effects Of Lycopodium Flabelliforme (Fern.) Blanch., Joan Macuszek
Masters Theses
Lycopodium flabelliforme (Fern.) Blanch. sporophytes were collected from a colony west of Flat Rock in Crawford County, Illinois. The material was either ground to a coarse grade using a Wiley Mill (grindate), left whole and untreated (fresh) or water extracted with a Waring blender (extract). The effect of the sporophyte material was tested on the germination of seeds and on the growth of seedlings of Raphnus sativa L. Sporophytes subjected to the grindate treatment showed the most inhibitory effects. It was shown that the alledged inhibitory substance was heat stable and able to be concentrated. Using column chromatography, at 37.7°C, …
Feeding Habits And Behavior Of The Whiptail Lizard Cnemidophorus Tigris On Partida Island, Patrick Alan Malone
Feeding Habits And Behavior Of The Whiptail Lizard Cnemidophorus Tigris On Partida Island, Patrick Alan Malone
Masters Theses
The feeding habits of the whiptail lizard Cnemidophorus tigris were studied from May 25 until July 23, 1977 on the Partida Island in the Gulf of California. Analysis of the stomach contents of 91 lizards revealed that during this period the eggs and young of the least and black petrel are a primary food source while tenebrionid beetles become a major food source after bird products become unavailable.
Interactions In Lambdoid Bacteriophage Populations, Bruce Edward Mitchell
Interactions In Lambdoid Bacteriophage Populations, Bruce Edward Mitchell
Masters Theses
The lambdoid bacteriophages are ideal subjects for the study of populational interactions at the molecular level because they do not mutually exclude one another in mixed infection of the same host cell. Previous work done in this laboratory using the lambdoid phage pairs λ-434 hy mi and λ-∅80 have demonstrated a density-dependent reduction in progeny yield per infected cell (burst size) as a function of increasing multiplicity of infection (m.o.i.). The λ cI gene which codes for the repress or molecule has been demonstrated to be the cause of the interaction in the λ-434 hy mi phage pair. …
The Structure And Fate Of Germinal Plasm In The Asiatic Fire-Bellied Frog, Bombina Orientalis (Anura-Discoglossidae), Ted W. Odom
The Structure And Fate Of Germinal Plasm In The Asiatic Fire-Bellied Frog, Bombina Orientalis (Anura-Discoglossidae), Ted W. Odom
Masters Theses
Lehman's polychrome stain was used to follow the fate of germinal plasm in early development of Bombina orientalis embryos. Islets of germinal plasm approximately 6 um in diameter were observed in the vegetal pole region of the 2-cell embryo. By the 4-cell stage, some of these islets had coalesced to form larger ones so that two size classes of islets were present (approximately 7.5 and 19.5 um in diameter).
As cleavage continued to the 16-cell stage, the islets were moved further up the cleavage furrow and were always observed to remain in close association with the cleavage membrane. The islets …
A Histochemical Study Of Tooth Development In The Chinese Hamster (Cricetulus Griseus), Robert B. Daszkiewicz
A Histochemical Study Of Tooth Development In The Chinese Hamster (Cricetulus Griseus), Robert B. Daszkiewicz
Masters Theses
The normal morphological development of the Chinese hamster (Cricetulus griseus) during the last week of gestation was studied. A review of the literature reveals no distinct study of tooth development in this species. An identical gestation period is found in the mouse (Mus musculus) making direct comparison between the embryos of the same age of the two species feasible. During this investigation, it was found that morphological tooth development in the Chinese hamster lagged behind that of the mouse by about 2 days. On day 14 of gestation in the Chinese hamster, the oral epithelium is …
The Effects Of Residual Chlorine On Selected Microflora Of Kickapoo And Cassell Creek, James A. Mcgaughey
The Effects Of Residual Chlorine On Selected Microflora Of Kickapoo And Cassell Creek, James A. Mcgaughey
Masters Theses
The survival of fecal coliforms, fecal streptococci, and heterotrophs after exposure to chlorine were compared in receiving waters of the Mattoon and Charleston, Illinois waste treatment facilities employing membrane filter techniques and Standard Plate Counts. Water samples were taken from receiving waters upstream from the treatment plant, from secondary effluent and chlorinated secondary effluent within the plant, and from downstream receiving waters. Stream flow contribution and plant effluent contribution required the calculation of dilution factors to determine expected numbers of the various microflora found downstream assuming no residual chlorine effect. Total chlorine concentration was measured by amperometric titration at the …