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The Influence of a Return of Native Grasslands upon the Ecology and Distribution of Small Rodents in Big Bend National Park
In the southwestern United States there is a delicate balance between the existing grasslands and the rodent fauna. The purpose of this investigation was to determine the influence of secondary succession of native grasslands upon the ecology and distribution of small rodents. Two methods of determining the rodent species were plot quadrates and trap lines using Sherman live traps. digital.library.unt.edu/ark:/67531/metadc279314/
Statesman from Texas, Roger Q. Mills
This is a biography of Roger Quarles Mills and his contributions to Texas history. digital.library.unt.edu/ark:/67531/metadc279265/
An Evaluation of an Integrated Didactic and Experimental Training Approach for the Interpersonal Skills of Sheltered Workshop Supervisors
The purpose of this study was to evaluate the effect of a three-day session using an integrated didactic and experiential approach for training in interpersonal skills for sheltered workshop supervisors. digital.library.unt.edu/ark:/67531/metadc279321/
Lipids and Phospholipase Activity of Vibrio Cholerae
One purpose of this investigation is to determine the fatty acid and lipid content of typical Vibrio cholerae cells. The comparison of cholera lipid constituents with those of closely-related bacteria might be of taxonomic value. Furthermore, chemical characterization of the cholera vibrio could provide useful criteria for identification of these disease-producing microorganisms. digital.library.unt.edu/ark:/67531/metadc279194/
The Effects of Student Teaching upon Attitudinal Characteristics Considered Basic for Effective Counselors
The problem of this study was to determine the effects of student teaching upon student-centeredness and openmindedness. digital.library.unt.edu/ark:/67531/metadc278810/
Diagnosing Learner Deficiencies in Algorithmic Reasoning
It is hypothesized that useful diagnostic information can reside in the wrong answers of multiple-choice tests, and that properly designed distractors can yield indications of misinformation and missing information in algorithmic reasoning on the part of the test taker. In addition to summarizing the literature regarding diagnostic research as opposed to scoring research, this study proposes a methodology for analyzing test results and compares the findings with those from the research of Birenbaum and Tatsuoka and others. The proposed method identifies the conditions of misinformation and missing information, and it contains a statistical compensation for careless errors. Strengths and weaknesses of the method are explored, and suggestions for further research are offered. digital.library.unt.edu/ark:/67531/metadc279333/
Relation of Personal Characteristics to Type of Position Among Bibliographic Network Coordinators, Ex-coordinators, and Selected Library Depeartment Heads
The objectives of this investigation were two-fold. The first was to determine the personal characteristics of Bibliographic Network Coordinators, both past and present; the second was to compare these identified characteristics with those of persons working in traditional library positions at comparable levels of responsibility. digital.library.unt.edu/ark:/67531/metadc279122/
A System of Selection and Human Resource Development for Small Retailers of Apparel and Accessories
The study has a twofold purpose. The first is to determine the extent to which organized selection and training practices exist in small apparel and accessory retailing establishments, and the general attitude which small retailers of apparel and accessories express toward the value of selection and training functions. The second is to construct a practical system which can be used in small apparel and accessory retailing establishments. digital.library.unt.edu/ark:/67531/metadc279034/
Strategic Market Planning : Setting Short- and Long Range Marketing Objectives for U.S. Subsidiaries of German Firms
The purpose of this dissertation was to conduct empirical exploratory research to determine whether marketing strategic objectives of U.S. subsidiaries of German firms would differ, given firms' differences in perception of competitive position and market trends. digital.library.unt.edu/ark:/67531/metadc278816/
Information Management in Local Area Networks: Impact on Users' Perceptions
In this study, computer human interaction factors are examined as a possible source of information to aid in the operation and management of local area computer networks. Users' perceptions of computer performance and response time are evaluated in relation to specific modifications in the information organization of a file server in a local area network configuration running in Novell 3.11. digital.library.unt.edu/ark:/67531/metadc278856/
The Impact of Computer Instruction on the Near Transfer and Far Transfer of a General Problem Solving Strategy
The purpose of this study was to examine the impact of computer instruction on the near transfer and far transfer of a means-end analysis problem solving strategy. digital.library.unt.edu/ark:/67531/metadc279007/
A Comparison of Bibliographic Instruction Methods on CD-ROM Databases
The purpose of this study was to compare four different methods of bibliographic instruction in order to determine which method would have the most effect on student learning. digital.library.unt.edu/ark:/67531/metadc279300/
The Role of Information in the Selection Process of a Primary Care Physician
There is a paucity of information about the various factors that influence the selection of primary care physicians. Also, the relative significance of these factors is not known, making it difficult to properly address ways to improve the information flow to patients when they select a primary care physician. digital.library.unt.edu/ark:/67531/metadc279148/
Productivity Considerations for Online Help Systems
The purpose of this study was to determine if task type, task complexity, and search mechanism would have a significant affect on task performance. The problem motivating this study is the potential for systems online help designers to construct systems that can improve the performance of computer users when they need help. digital.library.unt.edu/ark:/67531/metadc278792/
Electron Density and Collision Frequency Studies Using a Resonant Microwave Cavity as a Probe
Electron densities and collision frequencies were obtained on a number of gases in a dc discharge at low pressures (0.70-2mm of Hg). These measurements were performed by microwave probing of a filament of the dc discharge placed coaxially in a resonant cavity operating in a TM₀₁₀ mode. The equipment and techniques for making the microwave measurements employing the resonant cavity are described. One of the main features of this investigation is the technique of differentiating the resonance signal of the loaded cavity in order to make accurate measurements of the resonant frequency and half-power point frequencies. digital.library.unt.edu/ark:/67531/metadc279091/
Differences in Student and Faculty Attitudes toward Physical Activity
The problem was to identify the differences in attitudes toward physical activity of students and faculty within a health, physical education, and recreation professional preparation program. digital.library.unt.edu/ark:/67531/metadc279277/
A Comparative Study and Model of the Certification Requirements for Vocational Office Education Teacher-Coordinators in the United States
The purposes of the study were (1) to describe the historical rationale for teacher certification, (2) to survey and report the present requirement of the states for certification as a vocational office education teacher-coordinator, (3) to survey leading business and office education educators for recommendations for vocational office education teacher-coordinator certification requirements, (4) to examine, survey, and report the characteristics and qualifications of employed vocational office education teacher-coordinators, and (5) to develop a model of criteria representing ideal standards for initial and continuing certification requirements for vocational office education teacher-coordinators. digital.library.unt.edu/ark:/67531/metadc278943/
Factors Related to the Professional Progress of Academic Librarians in Louisiana
Three groups of Academic librarians in Louisiana were surveyed to determine what factors other than job performance influenced professional progress (Salary increases, promotion and tenure) for them. Staff development activities were also investigated to determine if they played any significant role in influencing professional progress. Three opinion questions were also asked in this investigation about the feasibility of using an index that was developed to assess quantitatively staff development activities. digital.library.unt.edu/ark:/67531/metadc279164/
An Expert System Approach to the Evaluation of Hypertext Engineering : An Experiment with KnowledgePro and MaxThink's
The purpose of this study is to create the prototype expert system, HEES, and to examine its usability and usefulness in evaluating hypertext software. digital.library.unt.edu/ark:/67531/metadc279010/
Empirical Research of Decision-making Effectiveness When Using Differing Presentation Formats Under Varying Decision Tasks
The purpose of this research was to determine if presentation format, given a particular task to be performed, would affect the decision-making process of financial decision makers. The problem motivating this study is the potential for managers to make inefficient decisions when they use reports which are presented inappropriately for a given task. digital.library.unt.edu/ark:/67531/metadc279040/
The Personal Reading Interests of Third, Fourth, and Fifth Grade Children in Selected Arkansas Public Schools
The purpose of this study was to determine the personal reading interests of students in the third, fourth and fifth grades and to determine if advances in technology in the past twenty years have changed their reading interests. digital.library.unt.edu/ark:/67531/metadc279204/
The Use of an Academic Library by University Students
Academic librarians have for a number of decades been interested in understanding more about how and why students use libraries. This study contributes to that area of library administration by focusing on nine factors thought to be associated with student use of academic libraries. digital.library.unt.edu/ark:/67531/metadc279070/
Plans for Establishing and Developing the Social Research Studies and Information Center Libraries in Saudi Arabia
The problem was to define the present status of the Social Research Studies and Information Center libraries in Saudi Arabia and to suggest ways in which they could be improved. The purposes of the study were two-fold: (1) to analyze and evaluate the current status of these libraries and to develop and improve the role and functions of these libraries; and (2) to consider the possibility of cooperation between these libraries. digital.library.unt.edu/ark:/67531/metadc278822/
A Correlational Analysis of Client Change In Sheltered Workshops with Selected Characteristics of the Client, Vocational Rehabilitation Counselor and Workshop Supervisor
This investigation was designed to assess the amount of attitudinal change experienced by the client and certain selected characteristics of the client, his vocational rehabilitation counselor, immediate workshop supervisor and his sheltered workshop. digital.library.unt.edu/ark:/67531/metadc279121/
The Effects of Cultural Bias: a Comparison of the WISC-R and the WISC-III
It has been suggested that the use of standardized intelligence tests is biased against minorities. This study investigates the newly revised Wechsler Intelligence Scale for Children-III in which Wechsler states that the new scale has eliminated biased items. Comparisons of the scores on the WISC-R and the WISC-III of a clinical population of sixteen African American and eighteen Caucasian males, ages ten to sixteen, revealed significant differences between the two groups on the WISC-III. The minority scores decreased predictably from the WISC-R to the WISC-III, but the Caucasian scores increased rather than decreasing. The findings of this study do not support the predictions and goals of revision as stated in the manual of the WISC-III. digital.library.unt.edu/ark:/67531/metadc278695/
The Effect of Self Concept and Various Conceptual and Physical Practice Methods Upon the Performance of a Selected Basketball Motor Skill
The problem investigated was the effect of various methods of conceptual, physical, and conceptual-physical practice procedures upon performance of the basketball motor skill of foul shooting. The sub-problem under investigation was the effect of self-concept upon the performance of foul shooting. digital.library.unt.edu/ark:/67531/metadc279047/
"Sorrow Whispers in the Winds" : the Republic of Texas's Commanche Indian Policy, 1836-1846
The Comanche Indians presented a major challenge to the Republic of Texas throughout its nine-year history. The presence of the Comanches greatly slowed the westward advancement of the Texas frontier, just as it had hindered the advancing frontiers of the Spaniards and Mexicans who colonized Texas before the creation of the Republic. The Indian policy of the Republic of Texas was inconsistent. Changes in leadership brought drastic alterations in the policy pursued toward the Comanche nation. The author examines the Indian policy of the Republic, how the Comanches responded to that policy, and the impact of Texan-Comanche relations on both parties. digital.library.unt.edu/ark:/67531/metadc279006/
Responses During Exercise at 90% and 100% of the Running Velocity Associated with VO2max (vVO2max)
Six male long-distance runners participated in this study to evaluate the responses to exercise at 90% and 100% vV02max. Subjects participated in five maximal exercise tests: one incremental, three tests at 90% vV02max, and one test at 100% vV02max. The results of this study demonstrate that V02max can be elicited in a constant-velocity test at 90% vV02max. digital.library.unt.edu/ark:/67531/metadc278820/
Public School Choice : An Impact Assessment
The goal of this thesis is to understand the consequences of educational choice in the public school system. The research takes place in San Antonio, Texas. The research encompasses meaningful comparisons between three sets of low income students and their families: 1) those who chose to remain in their attendance-zone school, 2) those who enrolled in the multilingual program, and 3) those who applied to the multilingual program but were not admitted because of space limitations. digital.library.unt.edu/ark:/67531/metadc279193/
Do Not Eat Fish from These Waters and Other Stories
Earl suffers from a guilty obsession with a monster catfish. Eddie Klomp searches dog tracks for the ghosts of his lost childhood. Mike Towns is a hopeless blues musician who loses everything he cares for. Blair Evans learns to love a pesky wart. Americana becomes confused with the difference between knowledge and sex. Do Not Eat Fish from These Waters And Other Stories is a collection of short stories that explores the strange and often defeated lives of these Southern characters (and one from the point-of-view of a feral hog). Each man, woman, and hog flails through a period of potential metamorphosis trying to find some sort of meaning and worth in the past, present and future. Not all of these characters succeed. digital.library.unt.edu/ark:/67531/metadc278886/
Parent Responses to the Birth and Rearing of a Child with Down Syndrome : The Application of Engel's 3-stage Theoretical Model of Grieving
The purpose of this study was twofold: 1) To analyze the similarities and differences between parent responses to the birth and rearing of a child with Down syndrome and; 2) To document the characteristics of grieving described in Engel's 3-stage model of grieving. A questionnaire was used to assess responses from randomly chosen parent members of the Dallas Down Syndrome Guild. Qualitative data analysis was conducted, using the methodology of triangulation. digital.library.unt.edu/ark:/67531/metadc279329/
Attenuation of Escherichia Coli Aspartate Transcarbamoylase Expressed in Pseudomonas Aeruginosa Mutant and Wild Type Strains
No apparent repression of pyr gene expression in Pseudomonas aeruginosa is observed upon addition of exogenous pyrimidines to the growth medium. Upon introduction of the subcloned Escherichia coli pyrBI genes for aspartate transcarbamoylase (ATCase) into a P. aeruginosa pyrB mutant strain, repression was observed in response to exogenously fed pyrimidine compounds. The results proved that it is possible to bring about changes in pyrimidine nucleotide pool levels and changes in transcriptional regulation of gene expression as a result. Thus, the lack of regulatory control in P. aeruginosa pyr gene expression is not due to an inability to take up and incorporate pyrimidine compounds into metabolic pools, or to an inability of the RNA polymerase to respond to regulatory sequences in the DNA but is probably due to a lack of specific regulatory signals in the promoter of the genes themselves. digital.library.unt.edu/ark:/67531/metadc279106/
Schoenberg, Polyphony, and Mode : A Reception of the Composer's Twelve-tone Method in American Publications, c. 1925-1950
Although Schoenberg viewed his twelve-tone method as an extension of the Germanic musical evolution from Bach to Brahms, one group of writers in America identified twelve-tone antecedents with Medieval and Renaissance polyphony. Such a correlation of Schoenberg's practice with this textural orientation of the past was part of a larger movement (what I term "neopolyphony") recognizing twentieth-century musical developments as the genesis of a polyphonic epoch reviving both the technical and aesthetic concerns of the former era. With Schoenberg's practice applied to this analogical context, other writers (Hill, Krenek, Perle) advanced certain modal theories based in various degrees on the internal organization and functional role of the Church modes. digital.library.unt.edu/ark:/67531/metadc279380/
Subcellular Localization of N-acylphosphatidyl-ethanolamine Synthase in Cotyledons of Cotton Seedlings
N-acylation of phosphatidylethanolamine (PE) with free fatty acids catalyzed by N-acyl phosphatidylethanolamine (NAPE) synthase was reported in cotyledons of 24-h-old cotton seedlings. Here I report subcellular localization of this enzyme. Differential centrifugation, sucrose density gradient fractionation,aqueous two-phase partitioning and electron microscopy techniques were utilized to elucidate subcellular site(s) of NAPE synthase. Marker enzymes were used to locate organelles in subcellular fractions. Differential centrifugation indicated that NAPE synthase is present in more than one organelle and it is a membrane bound enzyme. Sucrose density gradient fractionations indicated that NAPE synthase is present in membranes derived from endoplasmic reticulum (ER),Golgi and possibly plasma membrane (PM) but not mitochondria, glyoxysomes or plastids. Aqueous two-phase partitioning experiments with cotton and spinach tissues supported these results but Goigi appeared to be the major site of NAPE synthesis. Electron microscopy of subcellular fractions was used to examine isolated fractions to provide visual confirmation of our biochemical results. Collectively, these results indicate that NAPE is synthesized in plant ER, Golgi and possibly PM. digital.library.unt.edu/ark:/67531/metadc278717/
Social Drama at Southwestern Baptist Theological Seminary : The Dilday Controversy
This study examines the events surrounding the firing of Russell Dilday at Southwestern Baptist Theological Seminary as a social drama. The results suggest that, for application to post-industrial cultures, adaptations need to be made to Victor Turner's original method. The addition of Thomas Farrell's anticipation phase, identification of the breach with the transgression, and examination of unique facets of post-industrial cultures such as economic factors and the role of the media are recommended modifications. In light of these differences, the study concludes that the state of affairs at Southwestern is characteristic of schism in a post-industrial culture. digital.library.unt.edu/ark:/67531/metadc279236/
Attributional Style as a Predictor of Academic Success for Students with Learning Disabilities and Attention Deficit Disorder in Postsecondary Education
Thirty one students with learning disabilities (LD) and/or with Attention Deficit Hyperactivity Disorder (ADHD) completed a combined Academic Attributional Style and Coping with Academic Failures Questionnaire. The reformulated learned helplessness model (Abramson, Seligman, & Teasdale, 1978) predicted that students with negative attributional styles (i.e., internal-stable-global attributions) experienced motivational, cognitive, and emotional deficits. The present study examined college achievement (grade point average) of students with LD and/or ADHD. The Prediction that students with LD and/or ADHD with negative attributional styles would achieve less academic success than comparable students with positive attributional styles (i.e., extenal-unstable-specific attributions) was supported by the research results. digital.library.unt.edu/ark:/67531/metadc279301/
Echoes of Eugenics : Roe v Wade
Traces the inter-related histories of the eugenics movement and birth control, with an emphasis on abortion. Discusses Sarah Weddington's arguments and the Supreme Court's ruling in Roe v Wade. Straws the eugenic influences in the case and asserts that these influences caused the decision to be less than decisive. digital.library.unt.edu/ark:/67531/metadc279248/
Do Non-Native Grammars Allow Verbs to Raise to Agreement?
The purpose of this thesis is to determine whether the setting of the verb movement parameter in L2 is dependent on agreement acquisition. The Optionality hypothesis (Eubank, 1994) is tested by examining the L2 grammar of Chinese learners of English. To test this hypothesis, the sentence matching procedure originally described in Freedman and Forster (1985) is used. It is found that no current theory truly accounts for the results that are obtained. digital.library.unt.edu/ark:/67531/metadc278814/
Sampling Plan for Incoming Material Inspection at Sanden
Sanden international, an automobile air conditioning compressor manufacturer, was facing a problem in its incoming material inspection procedures. Although the company had designed and was using its own sampling plan, some managers and supervisors where not confident of its reliability. Sanden recently established a goal for its total number of defects per supplier as one part per million. Achievement of this target required reviews of the existing sampling plan. The purpose of this project was to help Sandra identify the best alternatives for its incoming material inspection procedures. To do that considerations were made about the usefulness of sampling inspections, theoretical aspects of inspection sampling plans were examined, current sampling plans were analyzed and recommendations were made. digital.library.unt.edu/ark:/67531/metadc278774/
A Two Semester Life Science Syllabus for Use in Texas Public Schools with Seventh Grade Students
The problem of using a state adopted textbook written to apply to a large body of students with varying interests and needs was overcome by using a detailed syllabus that arranged course content in a meaningful sequence that appealed to student interest. The outlined syllabus prepared a two semester life science curriculum to be used by the teacher to guide lesson planning. Both semesters were divided into three units each. Materials included in the syllabus were given to actual student groups in real classroom settings. Since hands on learning was an important part of classroom instruction, two laboratory sections were included in the appendices to be used with the syllabus. digital.library.unt.edu/ark:/67531/metadc279246/
A Laboratory Study of the Asiatic Clam (Corbicula fluminea Müller) as Influenced by Substrate, Food Source and Water Type
Growth of Corbicula fluminea was monitored in the laboratory. Three experiments were conducted. Experiment I utilized three substrates and one food type. Experiment II utilized three substrates and two food types. Experiments I and II were conducted to determine if substrate type or food type effected growth. Experiment III used no substrates, one food type and was conducted to determine growth response to different types of water. Clams were maintained in three substrates: sand, gravel and clay. Clams were also maintained without substrate. Growth was monitored by measuring shell length (mm) and recording the weight (mg) of clams over a period of thirty days. At the end of the test period data were evaluated for normality and homogeneity. digital.library.unt.edu/ark:/67531/metadc279067/
Applications of Reductive Analytical Techniques in the Phrygian Settings of the Orgelbüchlein by J.S. Bach
This study aims to two problematic aspects of the Phrygian mode: a. the development of a harmonic pattern at the cadence that differs from that of the other modes and of the major and minor modes as well; b. the observation that the Phrygian scale inverts all of the intervallic properties of the Major scale. The result of these two observations is that when the reductive techniques of Heinrich Schenker are applied in the Phrygian repertory, melodic and harmonic properties are brought into conflict with each other. However, application of alternative models of the Ursatz developed by Lori Burns has certain benefits for demonstrating musical properties in the Phrygian repertory. digital.library.unt.edu/ark:/67531/metadc279049/
The History of the 389th Bombardment Group (H): a Study of the Use and Misuse of Strategic Bombers in the Second World War
This thesis describes and evaluates the successes and failures of the use of strategic bombers through the abilities of one heavy bombardment group, the 389th. It examines the different missions that determined the effectiveness of the Group. When employed in a strategic bombing role, the 389th contributed significantly to the destruction of the German war industries and transportation system. When used as a tactical bomber, a mission for which it had neither proper training nor equipment, the 389th was generally a failure. digital.library.unt.edu/ark:/67531/metadc278883/
Distorted Time Perception as an Underlying Factor of Psychosis Proneness and Dissociation
Distortions in the perception of time historically have been associated with dissociation and psychosis in clinical populations. However, the relations among dissociation, psychosis, and time perception in sub-clinical populations have not been investigated. In the present study, college undergraduates scoring either normally or deviantly high on the Per-Mag were given a Dissociative Experiences Scale (DES) and a computerized time-estimation/production task. Participants scoring high on the Per-Mag obtained higher scores on the DES than participants scoring low on the Per- Mag. Per-Mag scores also correlated positively with DES scores across 608 total participants screened. The relation between dissociative and psychotic symptomatology is discussed considering dichotomous versus continuous conceptualizations of psychopathology. The effects of intelligence, social desirability, malingering, gender, and post-traumatic stress on the measures used are also discussed. digital.library.unt.edu/ark:/67531/metadc279102/
Longitudinal Study to Assess the Impact of Instructor-Based Training Versus Computer-Based Training on User Performance: A Field Experiment
The purpose of this study is to investigate the relationships between selected end-user training programs corporations provide to their employees and subsequent employee performance based on these opportunities. digital.library.unt.edu/ark:/67531/metadc278808/
Personality Correlates of Anorexia Nervosa in a Nonclinical Sample
The purpose of this study was to examine the relationship between anorexia nervosa and several personality traits. Past research in this area has been contradictory for several reasons. Sociocultural theories have described the media's role in promoting eating disorders by portraying a thin body-type as the ideal. However, they have neglected to describe the personality ideal which our society promotes in women. It is proposed here that anorexics incorporate and oppose this ideal. Therefore, the anorexic personality is one filled with conflict. digital.library.unt.edu/ark:/67531/metadc279090/
An Evaluation of the University of North Texas' "Youth Opportunities Unlimited" Program (a Compensatory Education Program for At-Risk, Secondary School Students)
Even though the Youth Opportunities Unlimited program has been in effect for ten years, there exists no current, comprehensive, effectiveness research on YOU. Such analysis is needed to determine the value of the YOU program. The purpose of this study is to evaluate the effectiveness of the YOU program. Both quantitative and qualitative research methods are used in this study. Quantitative analysis is provided through factual data collected through an alumni survey. Qualitative analysis is provided through personal opinion information obtained from YOU alumni through the survey and by personal interview. The YOU program at UNT is a successful compensatory education program that helps improve the education and the lives of America's at-risk students. digital.library.unt.edu/ark:/67531/metadc278870/
The Role of a Point Loss Contingency on the Emergence of Derived Relations in the Absence of Original Relations
The role of point loss for symmetrical relations introduced simultaneously with probe trials in the absence of original relations on all probe trial performances was evaluated. Training was completed after six conditional discriminations were established in two contexts. Point loss was introduced simultaneously with probe trials in the absence of original relations in the first context. Probe trials with no point loss in the absence of original relations were introduced in the second context. The simultaneous introduction of probe trials and the point loss contingency may in some cases prevent the emergence of an equivalence class in the context that contained the point loss as well as in the context where no point loss occurred. digital.library.unt.edu/ark:/67531/metadc279016/
Simulating Thermal and Chemical Spills in Coupled Cooling Reservoirs
Hot water discharges and potential chemical spills are factors that threaten water quality in cooling reservoirs of chemical and power plants. In this thesis, three models are used to analyze the impact of these factors in a particular case study. digital.library.unt.edu/ark:/67531/metadc279271/
Evaluation of the Use of the Bivalves Ischadium recurvum Rafinesque, 1820 and Corbicula fluminea Muller, 1774 as Biological Indicators of Relative Water Quality in Terms of Growth and Upper Temperature Tolerance
Growth of mussels under laboratory conditions was examined under various food regimes in different water types and temperatures. Growth was less than would be useful as an indicator and comparisons with field exposures were of minimal value. The effects of organophosphates on bivalves were examined via toxicity tests, tissue concentration, and by controlling exposure through the use of physical constraints. Upper temperature tolerance of both bivalve species was examined with respect to different acclimation temperatures and organophosphate exposures. Deviations from control exposures occurred at some temperatures. Copper effectively lowered the mean heat coma temperatures of C. fluminea at some concentrations, however, chlorine exposures did not alter heat coma temperature. digital.library.unt.edu/ark:/67531/metadc278827/