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  Partner: UNT Libraries
 Degree Discipline: Biology
 Collection: UNT Theses and Dissertations
Enallagma civile (Odonata: Coengrionidae) life history and production in a west Texas playa

Enallagma civile (Odonata: Coengrionidae) life history and production in a west Texas playa

Date: May 2002
Creator: Booker, Jennifer Suzanne
Description: A life history and productivity study of Enallagma civile was conducted in a playa that was located in the southern High Plains of Texas. Other odonates were also studies to identify their contributions to the habitat.
Contributing Partner: UNT Libraries
A Physiological Age-Grading System for Female Hydrellia pakistanae  Deonier (Diptera: Ephydridae)

A Physiological Age-Grading System for Female Hydrellia pakistanae Deonier (Diptera: Ephydridae)

Access: Use of this item is restricted to the UNT Community.
Date: December 2002
Creator: Lenz, Jennifer Marie
Description: Conflicting opinions about the effectiveness of H. pakistanae as a biological control agent for hydrilla prompt researchers to find a method for assessing the fly's success. Developing a physiological age-grading system for the fly using ovarian morphology to detect changes in reproductive activity is useful for evaluating reproductive status of the fly in field populations. Changes in the appearance of follicular relics in ovaries with oviposition provide a reliable method to estimate fecundity. Characteristics of follicular relics were used to develop a system with eight physiological age classes, three nulliparous and five parous. Changes that occur in the fat body were used to assist in classification of nulliparous females or those with low egg counts.
Contributing Partner: UNT Libraries
Population Dynammics in Mixed Cultures of Microorganisms

Population Dynammics in Mixed Cultures of Microorganisms

Date: January 1970
Creator: Koepp, Leila K.
Description: The purpose of this study was to determine the effect of substrate levels and different types of substrates on population changes of mixed cultures of Serratia marcescens and Saccharomyces cerevisiae, as compared to pure cultures.
Contributing Partner: UNT Libraries
Factors Affecting Pigment Production in Mycobacterium rhodocrous

Factors Affecting Pigment Production in Mycobacterium rhodocrous

Date: June 1970
Creator: Chamberlain, Charlene
Description: This study was undertaken in order to isolate and identify the pigment, if possible, and to determine the effect of substrate, substrate concentration, light exposure, and pH on pigment production in this organism.
Contributing Partner: UNT Libraries
Individual, Social, and Seasonal Behavior of the Thirteen-Lined Ground Squirrel (Spermophilus tridecemlineatus)

Individual, Social, and Seasonal Behavior of the Thirteen-Lined Ground Squirrel (Spermophilus tridecemlineatus)

Date: January 1970
Creator: Wistrand, Harry E.
Description: The purpose of this study is to provide a qualitative, detailed description of individual and social behavior in a free-living population of thirteen-lined ground squirrels. Behavioral differences in relation to various periods of the annual cycle are also evaluated.
Contributing Partner: UNT Libraries
Antibody Adsorption Used in Identification of Similar Streptomyces Species

Antibody Adsorption Used in Identification of Similar Streptomyces Species

Date: January 1970
Creator: Lassiter, Carroll B.
Description: This investigation involved the production of specific antisera against known International Streptomyces project strains of Streptomyces.
Contributing Partner: UNT Libraries
Metabolism of Methylglyoxal by Scenedesmus Quadricauda

Metabolism of Methylglyoxal by Scenedesmus Quadricauda

Date: June 1970
Creator: Rounsavall, Terry Yale
Description: The purpose of this study was to investigate the metabolic pathways of methylglyoxal in S. quadricauda.
Contributing Partner: UNT Libraries
Studies on Microorganisms in Jet Aircraft Fuel Systems

Studies on Microorganisms in Jet Aircraft Fuel Systems

Date: May 1970
Creator: Crum, Morris Glenn
Description: Laboratory and field investigations during the past ten years have demonstrated that certain microorganisms can cause deleterious effects in jet fuel tank systems. These investigations have brought about new concepts concerning the mechanisms of utilization of certain constituents in jet fuel tanks by microorganisms. Since the presence of microorganisms is inevitable in fuel systems, research efforts have been directed towards identification and determination of the types of microorganisms which can utilize jet fuel hydrocarbons, fuel additives, polyurethane foam structural materials, and particular hydrocarbons present in the fuel.
Contributing Partner: UNT Libraries
Terrestrial Vertebrates of Fannin County, Texas

Terrestrial Vertebrates of Fannin County, Texas

Date: January 1970
Creator: McCuller, Ronald E.
Description: The purposes of this thesis were (1) to provide some knowledge of the herptiles and mammals of this area, (2) to clarify the distribution of many of these animals in this section of Texas, and (3) to provide additional ecological information about the area.
Contributing Partner: UNT Libraries
An Ecological Survey of the Reptiles and Amphibians of Wise county, Texas

An Ecological Survey of the Reptiles and Amphibians of Wise county, Texas

Date: January 1970
Creator: Welch, Donald A.
Description: The purpose of this study was to record the relationships between the reptiles and amphibians of Wise County and the ecological subdivisions of the area. Wise County was chosen because of the heterogenity of the area and because of its proximity to other counties which have been previously and similarly studied.
Contributing Partner: UNT Libraries