Digital Commons Network^™

Biological Studies Of Bimeria Franciscana (Hydrozoa: Gymnoblastea) From The Petaluma River, California, Jose Rigoberto Gomez

University of the Pacific Theses and Dissertations

The athecate hydroid Bimeria franciscana Torrey has been found in estuarine habitats throughout the world. For this study B. franciscana was collected along the docks of the Petaluma River, California, a new collection site. Investigations on the appearance and biology of this hydroid have not been recorded in this area, perhaps because of its relative rarity along the river

Distribution records and synonymy of B. franciscana as well as general taxonomic characteristics of the species of the Genus Bimeria present on the west coast of the United States are assembled in a series of appendices added to this work. This …

The Biology And Ecology Of Trogoderma Glabrum (Herbst) In Stored Grains, Benjamin H. Kantack, Robert Staples

Nebraska Agricultural Experiment Station: Historical Research Bulletins

These investigations were undertaken to determine the distribution and importance of Trogoderma glabrum (Herbst) in stored grain in Nebraska, the ecological factors favoring population increase in stored wheat, corn, and sorghum, and the role T. glabrum might play in disseminating internally the Aspergillus molds commonly encountered in stored grain.

Biological Studies Of Selected Reaches And Tributaries Of The Colorado River, Nelson Thomas, Federal Water Pollution Control Administration

Publications (WR)

This report fulfills the request of the Colorado River Basin Project, Denver, Colorado, to determine the effects of municipal and industrial wastes on the aquatic life in selected waters of the Colorado River Basin. These studies were conducted with the assistance of personnel from the Colorado River Basin Project.

Complementarity Between The Deoxyribonucleic Acid Of Bacteriophage P4/2 And That Of Its Naturally Lysogenic Host Salmonella Potsdam Strain 4, Londa Liseli Schmidt

Loma Linda University Electronic Theses, Dissertations & Projects

Complementarity studies were conducted between bacteriophage P4/2 DNA and the DNAs of its naturally lysogenic host Salmonella potsdam strain 4 (SP4) and its sensitive host Salmonella potsdam strain 2 (SP2). Calf thymus DNA was used as a control.

Nitrocellulose membranes were used to adsorb varying concentrations of unlabeled DNA, using P4/2 DNA, SP4 DNA, SP2 DNA, and calf thymus DNA. A constant amount of P³² -labeled P4/2 DNA was added to each membrane and the hybrids were allowed to form. After thorough rinsing to get rid of unbound labeled DNA, radioactivity of the samples was read in a liquid …

Biological Studies On Various Strains Of Trypanosoma Avium, Wayne Gordon Cordell

All Master's Theses

The purpose of this study was to further investigate avian trypanosomids, relative to the Magpie, Steller's Jay, and Sparrowhawk, and to initiate work for a newer aspect of trypanosome study; the effects of radiation upon trypanosome growth in vitro.

The Biology And Food Habits Of Typhlodromus Mcgregori Chant (Acarina: Phytoseiidae), Brian A. Croft

Theses and Dissertations

Phytoseiid mites were first studied from an economic standpoint by Parrott et al. (1906), who described the value of Seius pomi Koch in controlling the pear leaf blister mite Eriophyes pyri (Pgst.). The taxonomic and biological studies of Garman (1948), Nesbitt (1951), and Chant ( 1959) stimulated additional interest in phytoseiids as predators, and in recent years they have been studied rather extensively as biological control agents of phytophagous mites.

A Biosystematic Study Of The Genus Aconitum (Ranunculaceae) In The Intermountain Region, Rex Cates

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study dealt with the Intermountain aconites of which the chromosome number of n = 8 was obtained.

The bumblebees, Bombus rufocinctus Cresson, B. appositus Cresson, and B. centralis Cresson, are the major pollinators of the allogamous and autogamous aconites.

Two-dimensional thin layer chromatography of cauline leaf extracts showed that the Intermountain aconites studied here consist of one chemical group.

The overall evidence indicates that the Intermountain aconites consist of one species, Aconitum columbianum Nutt., with two varieties, variety columbianum and variety ochroleucum A. Nels.

Occurrence And Distribution Of Invertebrates In Lower Logan River, Nancy A. Erman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A study of bottom invertebrates on the lower Logan River, Logan, Utah was conducted from June 1966 to July 1967. One objective was to evaluate on a qualitative and quantitative basis the invertebrate populations above and below a sewage entry in the river. Another objective was to study the year-round fluctuations in the invertebrate population.

The greatest variety of invertebrates was found in the summer. Chironomidae and Baetis were the only two groups found in abundance over the entire year.

Populations were reduced during autumn when water levels rose, and they declined even more sharply during the spring flood.

At …

Some Aspects Of The Symbionts Of Cassiopeia Frondosa, Dolores Ahles O.S.F.

Journal of the Minnesota Academy of Science

Symbiodinium microadriaticum were found localized in the mesoglea of Cassiopeia, the upside-down jellyfish. Axenic cultures of the symbiont were produced, utilizing chemically defined media. Studies of the life cycle established the presence of isogametes which had previously been postulated. Reactions to various bands of the spectrum were noted, and tolerance tests for survival in darkness and under temperature stress were carried out. Nutritional experiments established nitrates as the best nitrogen source and verified the fact that vitamins B12 and Thiamine, though not essential far life, hove a stimulating effect on the growth and motility of these zooxanthellae.

Snail Investigations : A Progress Report, G D. Rimes

Journal of the Department of Agriculture, Western Australia, Series 4

Experimental baits and sprays have given promising control of snails in cereals and pastures in the Geraldton-Dongara districts.

The problem of harvesting infested wheat crops has been overcome by attaching a specially designed rake in front of the header ccmb to remove snails from the plants.

Spring Dispersal Of Some Leafhoppers And Aphids, A. G. Peterson, J. D. Bates, R. S. Saini

Journal of the Minnesota Academy of Science

Two species of leafhoppers and four species of cereal aphids appear to be transported to Minnesota each spring on strong winds from the south or southwest. The aster leafhopper, Macrosteles fascifrons (Stal); the English grain aphid, Macrosiphum avenae (Fabr.); the apple grain aphid, Rhopalosiphum fitchii (Sand.); and the greenbug, Schizaphis graminum (Rond.), usually arrive in Minnesota during late April or early May. Weather conditions favorable for northward movement of these insects consist of a high pressure area over the eastern states, a low pressure area over the western plains, and the resulting strong, persistent, south wind which is often called …

A Supplement To The Fauna And Flora Of Horn Island, Mississippi, E. Avery Richmond

Gulf and Caribbean Research

Since the publication of “The Fauna and Flora of Horn Island, Mississippi’’ (Richmond 1962) search for unrecorded species present on this island, or in the waters surrounding it, has been continuing by myself and others. The premise that all of the plants and animals living in a given area can never be located completely is naturally well-founded. However, it seems advisable to continue the search for unlisted species of Horn Island.

Many unrecorded specimens have been collected and it seems proper at this time to make a supplementary list available to the public, particularly those interested in fields of science …

Migration Of The Army Cutworm, Chorizagrotis Auxiliaris (Lepidoptera: Noctuidae). I. Evidence For A Migration, Kenneth P. Pruess

Department of Entomology: Faculty Publications

Indirect evidence is presented to support the conclusion that the army cutworm, Chorizagrotis auxiliaris (Grote), migrates from the Great Plains to the Rocky Mountains during the spring and the same individuals return to the Plains in the fall. Spring activity occurs progressively later from east to west, the delay being greater than that caused by emergence but commensurate with flight potential of the moth. Flight is predominately from east to west and a constant turnover of moths occurs at all locations on the Plains. Seasonal occurrence in the mountains coincides with the period of inactivity on the Plains, during which …

An Ecological Study Of The Algae And Mosses Of Cascade Springs, Wasatch County, Utah, Deanna Lynn Mccoard

Theses and Dissertations

An ecological study was conducted at Cascade Springs, Wasatch county, Utah from August 1965, to June 1967. The algae and aquatic moss species were determined and ecological information about these organisms was obtained. Physical data were also collected: bicarbonates, carbonates, free carbon dioxide, hydroxides, oxygen, pH, and temperature. The physical environment of the water was found to be very constant. Tests taken at the different study sites were consistently similar, not only during each day, but all year around. No great variation of any kind was found in the water. In contrast to the water environment, the topography of the …

Distribution Of Eggs And Leaf Mines Of Choristoneura Houstonana (Lepidoptera: Tortricidae) Attacking Eastern Red Cedar, Juniperus Virginiana, Elvis A. Heinrichs

Department of Entomology: Faculty Publications

Cedar at Larned, Kansas, appeared to be more severely damaged in the upper and southern portions of the trees. There was a significant difference, in numbers of eggs and leaf mines, between the upper and lower halves and between compass directions; the upper and southern portions of the trees being most highly infested.

Choristoneura houstonana (Grote) is a pest of eastern red cedar, Juniperus virginiana, grown as a home landscape ornamental in shelter belts and windbreaks in western Kansas. It has been present for many years but the first reliable record in Kansas was in 1964, when it was sent …

Evaluation Of The Short Sternum As Diagnostic Evidence For Trisomy-E, Frank George Deeter

All Master's Theses

This study has demonstrated that a reliable technique for determining short sternums has been developed. Evidence for its reliability is given by two distinct and highly significant correlations.

Investigations Into The Spawning Ecology Of The White Bass Roccus Chrysops, (Rafinesque) In Utah Lake, Utah, Frédérick Vinvent

Theses and Dissertations

Utah Lake, located in Utah County, north-central Utah, is one of the most important natural fishing lakes in the state. The spawning ecology of the white bass (Roccus chrysops) was studied in Utah Lake between 1964 and 1966. Gill nets and seining were the primary means of sampling. The spawning location was sampled every other day throughout the spring and early summer of 1966. Three major winter schooling areas were found: Provo Bay - Creer Access south to the mouth of Spanish Fork River, Lincoln Beach, and off Ludlow Barn. There appears to be extensive winter feeding and movement among …

Biology Of Duforea And Of Its Cleptoparasite, Neopasites (Hymenoptera: Apoidea), Phillip F. Torchio, Jerome G. Rozen Jr., George E. Bohart, Marjorie S. Favreau

All PIRU Publications

No abstract provided.

Determination Of Larval Instars Of The Rice Weevil Sitophilus Oryzae (L.) (Coleoptera: Curculionidae) In Wheat, A. E. O'Donnell

Journal of the Arkansas Academy of Science

No abstract provided.

Studies On The Helminth Fauna Of Alaska. Xliv. Revision Of Ogmogaster Jägerskiöld, 1891, With A Description Of O. Pentalineatus Sp. N. (Trematoda: Notocotylidae), Robert L. Rausch, Francis H. Fay

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Discrepant conclusions in the literature concerning the specific distinction of the two spe- cies assigned to the genus Ogmogaster Jägerskiöld, 1891, necessitated a reevaluation of the taxonomic characters used in separating these trematodes. Study of material from baleen whales from North Pacific waters and from baleen whales and lobodont pinnipeds from the southern hemisphere disclosed the existence of two species which can be distinguished by consistent differences in numbers of ventral ridges, ratio of length of cirrus sac to length of body, and by other morphological characters. Since the original description of O. plicatus (Creplin, 1829) does not permit certain …

Oyster Abundance In Apalachicola Bay, Florida In Relation To Biotic Associations Influenced By Salinity And Other Factors, R.W. Menzel, N.C. Hulings, R.R. Hathaway

Gulf and Caribbean Research

From June 1955 through May 1957, stations on three oyster reefs were sampled quantitatively at intervals and all oysters and associated macroscopic organisms were recorded per unit area. Station I was a privately leased “natural” reef, consisting of higher places exposed at low water, with a salinity range of 22.7-36.6 o/oo and was fairly productive. Station II, depth ca. two meters, was the least saline, range 1.2-29.3 o/oo, and was considered very productive for natural reef. Station III, depth one meter, salinity range 7.5-35.7 o/oo, was depleted although there was an abundant spatfall.

Depth and bottom types as well as …

Diurnal Distribution Of Phytoplankton From A Single Station At The Mouth Of The James River, Harold G. Marshall

Biological Sciences Faculty Publications

Eight sets of water samples were taken to a depth of 36 ft. during a 24-hr. period. A homogeneity was found in the vertical distribution of the total phytoplankton in samples from 7 of the 8 hydro-casts. Skeletonema costatum and Asterionella japonica were the most numerous phytoplankters in every sample, with the majority of their counts each exceeding 500, 000 cells per liter.

Host-Parasite Relationships Between Prunus Mahaleb And The Parasitic Nematodes Pratylenchus Neglectus And Meloidogyne Hapla, Bernard Al Tait

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Utah orchardists have encountered problems which they have needed to control for continued successful and economical fruit production. Some of these problems are diseases such as western-X virus, cytospora canker (Wadley, 1955) and codling moth (Davis, 1957). These diseases, because of their nature and severity, have received more attention than others.

Statistics In The Design And Analysis Of Physiology Experiments, L. Dale Van Vleck, C. R. Henderson

Department of Animal Science: Faculty Publications

Statistics should be considered as a tool by the animal experimenter in much the same way that a chemical analysis or a radiation counter is used as a tool. Too often statistics is considered as something magical which can restore order out of chaos and perhaps absolve the experimenter from mistakes in logic and procedure. It is true of course that the statistician through his knowledge of statistical procedures can sometimes help salvage some results from an otherwise hopelessly muddled experiment. One point must be made clear at the outset—the statistician is not a tool of the experimenter although statistics …

The Distribution Of Phytoplankton Along A 140 Mile Transect In The Chesapeake Bay, Harold G. Marshall

Biological Sciences Faculty Publications

The composition of phytoplankton progressively changed in the surface samples taken between Norfolk, Virginia and Cambridge, Maryland. These was an inverse relationship between the numbers of phytoplankters and zooplankters in the transect samples. Vertical stratification of the plankton was studied at two 24-hr, stations at the Great Wicomlco and Patuxent Rivers. The vertical centers of zooplankton and phytoplankton populations fluctuated over the study period and evidence is given to support a grazing phenomenon. Large concentrations of nannoplankters were found in all the plankton samples taken and is attributed to the collection procedure using the Van Dorn sampler.

Life Cycle And Development Of Prosthorhynchus Formosus (Van Cleave, 1918) Travassos, 1926, An Acanthocephalan Parasite Of Birds, Gerald D. Schmidt, O. Wilford Olsen

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The life cycle of Prosthorhynchus formosus (Van Cleave, 1918) Travassos, 1926 is presented. The terrestrial isopods Armadillidium vulgare, Porcellio laevis, and P. scaber served as experimental intermediate hosts, and chickens and turkeys as experimental definitive hosts. After ingestion of the eggs by the isopod, the acanthor emerges from its shells within 15 minutes to 2 hours, enters the gut wall of its host, and remains there 15 to 25 days. It then migrates to the hemocoel and develops through the acanthella stage to the infective cystacanth by the 60th to 65th day of infection.

Seasonal Population Fluctuations And Natural Control Of The Sweetclover Aphid, G. R. Manglitz, R. E. Hill

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Because the potential of the sweetclover aphid for damaging sweetclover is well documented, yet damage occurs only occasionally under field conditions, it would appear that natural factors which depress midsummer populations are important in preventing greater damage and worthy of detailed study. Thus, this study was begun early in 1959 to investigate the natural factors which generally keep populations of this aphid below levels causing economic damage.

A Review Of The Mites Of The Family Pseudocheylidae Oudemans, 1909 (Acarina, Prostigmata), Edward W. Baker, Warren T. Atyeo

Bulletin of the University of Nebraska State Museum (1924–2023)

Four genera and ten species are included; these are: Pseudocheylus biscalattts Ber1ese, 1888, P. americanus (Ewing), 1909, Stigmocheylus brevisetus Berlese, 1910, Anoplocheylus europaeus (Berlese), 1910, A. clavatus, n. sp., A. aegypticus, n. sp., A. protea (Womersley), 1935, Neocheylus natalensis Tragardh, 1906, N. nidcolus Lawrence, 1954, and N. collis, n. sp.

Ecology Of Summer Aquatic Invertebrate Populations In A Marsh Area Of Utah Lake, David A. White

Theses and Dissertations

Mud Lake marsh lies east of Utah Lake between the cities of Provo and Springville in Utah County. Since 1936 it has become a polluted, odiferous, silted area. A study was conducted on the aquatic invertebrates during the summer of 1962 (June 19 to September 20). An .01 meter2 bottom sampler was used at 30 random stations. Each station was sampled once a week. Water depth, mud, water and air temperatures were taken at each station. Dissolved oxygen (Winkler method) and ion resistance (Wheatstone bridge) were taken each day. The aquatic invertebrate community consisted of benthic (Diptera, Oligochaeta, Nematoda), interphashic …

Biochemical And Biological Studies On The Growth Of An Rna Containing Bacteriophage, Stephen Cooper

Student Theses and Dissertations

The growth of the RNA-containing bacteriophage f2 has been studied. DNA synthesis appears normal after phage infection. It is possible to dissociate the synthesis of viral RNA from the synthesis of DNA using thymine-less bacteria with fluorinated pyrimidines and Mitomycin C as inhibitors of DNA synthesis. It is concluded that the growth of f2 is independent of DNA synthesis. Since the phage RNA has no special characteristics, its synthesis has been followed by using p32 to label RNA which is eventually incorporated into virus particles. Using this method of measuring phage RNA synthesis, it has been shown that the material …