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Evaluation Of Soil Type And Seeding Rate On Winter Cover Crop Species In A Soybean Production System, Donna S. Morgan Nov 2019

Evaluation Of Soil Type And Seeding Rate On Winter Cover Crop Species In A Soybean Production System, Donna S. Morgan

LSU Doctoral Dissertations

The integration of winter annual cover crops into a cropping system can potentially improve soil health and crop production, however, the impact of variables such as seeding rates, across two very different soil types, has not been well documented. A two-year study was conducted at the Dean Lee Research Station and Extension Center in Alexandria, Louisiana to evaluate the effects of cover crop seeding rate and soil type on cover crop biomass, weed suppression, soil fertility, and soybean (Glycine max L) growth and yield. Analysis of potential economic impacts was also performed to estimate financial net returns for three …

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Transgenic Control Of Aflatoxin Contamination In Maize Through Host-Induced Gene Silencing Targeting Aspergillus Flavus Genes Encoding Polygalacturonase (P2c) And Versicolorin Dehydrogenase (Aflm), Yenjit Raruang Nov 2019

Transgenic Control Of Aflatoxin Contamination In Maize Through Host-Induced Gene Silencing Targeting Aspergillus Flavus Genes Encoding Polygalacturonase (P2c) And Versicolorin Dehydrogenase (Aflm), Yenjit Raruang

LSU Doctoral Dissertations

Maize (Zea mays L.) is susceptible to Aspergillus flavus infection and subsequent contamination with aflatoxins, the most potent naturally produced carcinogenic secondary metabolites. Here, the A. flavus gene aflM encoding the versicolorin dehydrogenase in aflatoxin biosynthesis and the p2c gene encoding the polygalacturonase that is involved in infection were selected as targets for suppression through host induced gene silencing (HIGS). A HIGS vector targeting these genes was constructed and introduced into immature B104 maize embryos. Thirteen out of fifteen p2c transformation events and six out of seven aflM events were confirmed positive by PCR. Kernels containing the p2c gene …

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Effect Of Storage Temperature On The Survival Or Growth Of Listeria Monocytogenes On Whole And Fresh-Cut Produce, Juan F. Moreira Calix Nov 2019

Effect Of Storage Temperature On The Survival Or Growth Of Listeria Monocytogenes On Whole And Fresh-Cut Produce, Juan F. Moreira Calix

LSU Master's Theses

Whole and fresh-cut produce are minimally processed and, therefore susceptible to microbial contamination. This study examined the survival or growth of Listeria monocytogenes on whole, and fresh-cut produce at different storage temperatures. Fresh fruits (cantaloupes, pears, pineapples, papayas, and watermelon) and vegetables (broccoli, cauliflower, lettuce, kale, and green bell peppers) were cut into 25 g pieces and were spot inoculated with 0.5 mL (8 Log CFU/mL) of Listeria monocytogenes. Inoculated fresh-cut samples were stored at 4°C or 13°C for 6 days. To represent the outer surface of the produce, cantaloupes and green bell pepper disks (20 cm2) were cut with …

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Rice Response To Nitrogen Fertilization And Comparison Of Unmanned Aerial Systems And Active Crop Canopy Sensors Vegetative Index To Estimate Rice Yield Potential, Anna Coker Nov 2019

Rice Response To Nitrogen Fertilization And Comparison Of Unmanned Aerial Systems And Active Crop Canopy Sensors Vegetative Index To Estimate Rice Yield Potential, Anna Coker

LSU Master's Theses

Nitrogen (N) fertilization is a key component in producing profitable, maximized rice grain yields because yield is directly affected by N fertilizer applications. Economical optimum N rate (EONR) is used to estimate where the N fertilization rate impacts rice grain yield but is still economically efficient. Three common response models, linear-plateau, quadratic-plateau, and quadratic models were used to determine the response of rice to N fertilizer to determine the optimum N fertilization rate. The objective of the first part of this study was to evaluate the models by assessing the coefficients of determination (R2), maximum rice grain yields …

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Is Iodine Deficiency Still A Problem In Sub-Saharan Africa?: A Review, Sanjoy Saha, Brenda A.Z. Abu, Yasaman Jamshidi-Naeini, Upasana Mukherjee, Makenzie Miller, Li Ling Peng, Wilna Oldewage-Theron Nov 2019

Is Iodine Deficiency Still A Problem In Sub-Saharan Africa?: A Review, Sanjoy Saha, Brenda A.Z. Abu, Yasaman Jamshidi-Naeini, Upasana Mukherjee, Makenzie Miller, Li Ling Peng, Wilna Oldewage-Theron

Faculty Publications

Iodine is an essential trace mineral, vital for its functions in many physiological processes in the human body. Both iodine deficiency (ID) and excess are associated with adverse health effects; ID and excess iodine intake have both been identified in sub-Saharan Africa (SSA). The review aims to (1) review the iodine status among populations in SSA until October 2018, and (2) identify populations at risk of excess or inadequate iodine intakes. A systematic search of relevant articles was carried out by a seven-member research team using PubMed, Science Direct and Scopus. A total of twenty-two articles was included for data …

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Expected Genotype Quality And Diploidized Marker Data From Genotyping-By-Sequencing Of Urochloa Spp. Tetraploids, Filipe Inácio Matias, Karem Guimarães Xavier Meireles, Sheila Tiemi Nagamatsu, Sanzio Carvalho Lima Barrios, Cacilda Borges Do Valle, Marcelo Falsarella Carazzolle, Roberto Fritsche-Neto, Jeffrey B. Endelman Nov 2019

Expected Genotype Quality And Diploidized Marker Data From Genotyping-By-Sequencing Of Urochloa Spp. Tetraploids, Filipe Inácio Matias, Karem Guimarães Xavier Meireles, Sheila Tiemi Nagamatsu, Sanzio Carvalho Lima Barrios, Cacilda Borges Do Valle, Marcelo Falsarella Carazzolle, Roberto Fritsche-Neto, Jeffrey B. Endelman

Faculty Publications

Although genotyping-by-sequencing (GBS) is a well-established marker technology in diploids, the development of best practices for tetraploid species is a topic of current research. We determined the theoretical relationship between read depth and the phred-scaled probability of genotype misclassification conditioned on the true genotype, which we call expected genotype quality (EGQ). If the GBS method has 0.5% allelic error, then 17 reads are needed to classify simplex tetraploids as heterozygous with 95% accuracy (EGQ = 13) vs. 61 reads to determine allele dosage. We developed an R script to convert tetraploid GBS data in variant call format (VCF) into diploidized …

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Identification Of Quantitative Trait Loci (Qtls) For Resistance To Fusarium Head Blight (Fhb) In Wheat Variety Ags 2060 And Evaluation Of The Effect Of Fhb1 Resistance Gene On Fhb Reaction In A Louisiana Wheat Breeding Population, Alejandro Castro Aviles Nov 2019

Identification Of Quantitative Trait Loci (Qtls) For Resistance To Fusarium Head Blight (Fhb) In Wheat Variety Ags 2060 And Evaluation Of The Effect Of Fhb1 Resistance Gene On Fhb Reaction In A Louisiana Wheat Breeding Population, Alejandro Castro Aviles

LSU Doctoral Dissertations

Fusarium head blight (FHB), caused by the fungus Fusarium spp., is a disease that attacks several grass species, including wheat. Wheat variety AGS 2060 has remained moderately susceptible to FHB and is regularly found in pedigrees of resistant breeding lines. Quantitative trait loci (QTL) mapping was conducted to find sources of resistance to FHB in AGS 2060. A 90K SNP chip was used to genotype a double haploid mapping population produced from a cross between wheat varieties AGS 2060 and AGS 2035. There were highly significant differences between lines in the population for Fusarium damaged kernels (FDK) rating and deoxynivalenol …

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Prevalence And Control Of Salmonella Spp. And Sanitary Indicator Microorganisms In Wild Caught And Farm Raised Catfish (Ictalurus Punctatus), Bilan Costley Jessie Oct 2019

Prevalence And Control Of Salmonella Spp. And Sanitary Indicator Microorganisms In Wild Caught And Farm Raised Catfish (Ictalurus Punctatus), Bilan Costley Jessie

LSU Doctoral Dissertations

Catfish inspections have transitioned from the U.S. Food and Drug Administration (FDA) to the United States Department of Agriculture (USDA). The USDA Food Safety and Inspection Service (FSIS) and Food Emergency Response Network (FERN) consider it important to assess the food safety risk associated with consuming catfish in the United States. Surveillance of farm-raised and wild-caught catfish for pathogens is relevant as a public safety protocol. The purpose of this study was to detect the prevalence of Salmonella spp., identify and examine isolates for antibiotic resistance to clinical treatments, evaluate the effectiveness of antimicrobial chemical treatments against Salmonella enterica, and …

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Characterizing Louisiana's Freshwater Commercial Fisheries, Lauren Bonatakis Oct 2019

Characterizing Louisiana's Freshwater Commercial Fisheries, Lauren Bonatakis

LSU Master's Theses

As an important contributor to Louisiana’s economy, the commercial freshwater fisheries have been the subject of growing attention in recent years by resource managers. Compared to the marine sector, little is known about these fisheries. Anecdotally, the fisheries appear to be on the brink of collapse. Fewer young fishermen are entering the field, fish buyers and processors are closing, and market prices remain stagnant. Because of this, the fisheries lack the resources needed to perpetuate the success and sustainability for future generations. To better understand this industry, I conducted a two-part study to characterize the commercial freshwater fisheries in Louisiana. …

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Intrusive Advising And Retention Practices In A College Of Agriculture: A Case Study Of First-Year Student Experiences, Amanda Martin Oct 2019

Intrusive Advising And Retention Practices In A College Of Agriculture: A Case Study Of First-Year Student Experiences, Amanda Martin

LSU Doctoral Dissertations

The purpose of this qualitative case study was to explore the perceptions of first-year students who experienced intrusive advising and retention initiatives in the College of Agriculture at Louisiana State University (LSU). Research participants consisted of 20 first-year students enrolled in the college in the fall of 2018. One-on-one, face-to-face interviews with first-year students were conducted to gain insight and understand student experiences with intrusive advising and retention initiatives within the College of Agriculture. College student retention and factors that contribute to understanding retention have been extensively studied (Astin, 1993; Braxton, Hirschy, & McClendon, 2004; Habley, Bloom, & Robbins, 2012; …

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Ethylene And Phloem Signals Are Involved In The Regulation Of Responses To Fe And P Deficiencies In Roots Of Strategy I Plants, Carlos Lucena, Rafael Porras, María J. García, Esteban Alcántara, Rafael Pérez-Vicente, Ángel M. Zamarreño, Eva Bacaicoa, José M. García-Mina, Aaron P. Smith, Francisco J. Romera Oct 2019

Ethylene And Phloem Signals Are Involved In The Regulation Of Responses To Fe And P Deficiencies In Roots Of Strategy I Plants, Carlos Lucena, Rafael Porras, María J. García, Esteban Alcántara, Rafael Pérez-Vicente, Ángel M. Zamarreño, Eva Bacaicoa, José M. García-Mina, Aaron P. Smith, Francisco J. Romera

Faculty Publications

© Copyright © 2019 Lucena, Porras, García, Alcántara, Pérez-Vicente, Zamarreño, Bacaicoa, García-Mina, Smith and Romera. Iron (Fe) and phosphorus (P) are two essential mineral nutrients whose acquisition by plants presents important environmental and economic implications. Both elements are abundant in most soils but scarcely available to plants. To prevent Fe or P deficiency dicot plants initiate morphological and physiological responses in their roots aimed to specifically acquire these elements. The existence of common signals in Fe and P deficiency pathways suggests the signaling factors must act in conjunction with distinct nutrient-specific signals in order to confer tolerance to each deficiency. …

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Detecting Parasite Associations Within Multi-Species Host And Parasite Communities, Tad A. Dallas, Anna Liisa Laine, Otso Ovaskainen Oct 2019

Detecting Parasite Associations Within Multi-Species Host And Parasite Communities, Tad A. Dallas, Anna Liisa Laine, Otso Ovaskainen

Faculty Publications

© 2019 The Author(s) Published by the Royal Society. All rights reserved. Understanding the role of biotic interactions in shaping natural communities is a long-standing challenge in ecology. It is particularly pertinent to parasite communities sharing the same host communities and individuals, as the interactions among parasites—both competition and facilitation—may have far-reaching implications for parasite transmission and evolution. Aggregated parasite burdens may suggest that infected host individuals are either more prone to infection, or that infection by a parasite species facilitates another, leading to a positive parasite–parasite interaction. However, parasite species may also compete for host resources, leading to the …

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The Importance Of Self-Monitoring For Behavior Change In Youth: Findings From The Switch® School Wellness Feasibility Study, Gabriella M. Mcloughlin, Richard R. Rosenkranz, Joey A. Lee, Maren M. Wolff, Senlin Chen, David A. Dzewaltowski, Spyridoula Vazou, Lorraine Lanningham-Foster, Douglas A. Gentile, Marisa S. Rosen, Gregory J. Welk Oct 2019

The Importance Of Self-Monitoring For Behavior Change In Youth: Findings From The Switch® School Wellness Feasibility Study, Gabriella M. Mcloughlin, Richard R. Rosenkranz, Joey A. Lee, Maren M. Wolff, Senlin Chen, David A. Dzewaltowski, Spyridoula Vazou, Lorraine Lanningham-Foster, Douglas A. Gentile, Marisa S. Rosen, Gregory J. Welk

Faculty Publications

School Wellness Integration Targeting Child Health (SWITCH®) is a school wellness implementation initiative focused on building capacity for schools to plan and coordinate wellness programming. Grounded in Social Cognitive Theory (SCT), the purpose of this study was to evaluate the utility of the web-based, self-regulation system on physical activity (PA) behavior outcomes. At pre-test and post-test, students in SWITCH® schools (n = 8) completed the online Youth Activity Profile (YAP) to assess PA and sedentary behavior (SB). Students (n = 513) were categorized into high or low self-monitoring groups (using a median split) based on their use of the web-based …

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F18rs Sgr No. 18, Bridget Ryan Oct 2019

F18rs Sgr No. 18, Bridget Ryan

Student Senate Enrolled Legislation

A RESOLUTION TO COMMEND THE LSU STUDENT HEALTH CENTER AND STUDENT HEALTH CENTER EXECUTIVE DIRECTOR, D’ANN MORRIS FOR PROPERLY USING STUDENT FEES IN ITS OPERATIONS AND SERVICES

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Sympathetic Innervation Of The Interscapular Brown Adipose Tissue In Mouse, Marie François, Hayden Torres, Clara Huesing, Rui Zhang, Carson Saurage, Nathan Lee, Emily Qualls-Creekmore, Sangho Yu, Christopher D. Morrison, David Burk, Hans Rudolf Berthoud, Heike Münzberg Oct 2019

Sympathetic Innervation Of The Interscapular Brown Adipose Tissue In Mouse, Marie François, Hayden Torres, Clara Huesing, Rui Zhang, Carson Saurage, Nathan Lee, Emily Qualls-Creekmore, Sangho Yu, Christopher D. Morrison, David Burk, Hans Rudolf Berthoud, Heike Münzberg

Faculty Publications

© 2019 The Authors. Annals of the New York Academy of Sciences published by Wiley Periodicals, Inc. on behalf of New York Academy of Sciences. The recent discovery of significant brown fat depots in adult humans has revived discussion of exploiting brown fat thermogenesis in the control of energy balance and body weight. The sympathetic nervous system (SNS) has a key role in the activation of brown fat and functional mapping of its components will be crucial for the development of specific neuromodulation techniques. The mouse is an important species used for molecular genetic modulations, but its small size is …

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Louisiana Agriculture Fall, 2019, Lsu Agcenter Oct 2019

Louisiana Agriculture Fall, 2019, Lsu Agcenter

Louisiana Agriculture

No abstract provided.

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Effectiveness Of Daily Rinsing Of Alfalfa Sprouts With Aqueous Chlorine Dioxide And Ozonated Water On The Growth Of Listeria Monocytogenes During Sprouting, A. Adhikari, V. S. Chhetri, D. Bhattacharya, C. Cason, P. Luu, A. Suazo Oct 2019

Effectiveness Of Daily Rinsing Of Alfalfa Sprouts With Aqueous Chlorine Dioxide And Ozonated Water On The Growth Of Listeria Monocytogenes During Sprouting, A. Adhikari, V. S. Chhetri, D. Bhattacharya, C. Cason, P. Luu, A. Suazo

Faculty Publications

Alfalfa sprouts have been implicated in multiple foodborne disease outbreaks. This study evaluated the growth of Listeria monocytogenes during sprouting of alfalfa seeds and the effectiveness of daily chlorine dioxide & ozone rinsing in controlling the growth. Alfalfa seeds inoculated with L. monocytogenes were sprouted for 5 days (25°C) with a daily aqueous ClO2 (3 ppm, 10 min) or ozone water (2 ppm, 5 min) rinse. Neither treatment significantly reduced the growth of L. monocytogenes on sprouting alfalfa seeds. The initial level of L. monocytogenes was 3·44 ± 0·27, which increased to c. 7·0 log CFU per g following 3 …

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Microrna-92a Regulates The Expression Of Aphid Bacteriocyte-Specific Secreted Protein 1, Honglin Feng, Joun S. Park, R. Grace Zhai, Alexandra C.C. Wilson Sep 2019

Microrna-92a Regulates The Expression Of Aphid Bacteriocyte-Specific Secreted Protein 1, Honglin Feng, Joun S. Park, R. Grace Zhai, Alexandra C.C. Wilson

Faculty Publications

Objective: Aphids harbor a nutritional obligate endosymbiont in specialized cells called bacteriocytes, which aggregate to form an organ known as the bacteriome. Aphid bacteriomes display distinct gene expression profiles that facilitate the symbiotic relationship. Currently, the mechanisms that regulate these patterns of gene expression are unknown. Recently using computational pipelines, we identified miRNAs that are conserved in expression in the bacteriomes of two aphid species and proposed that they function as important regulators of bacteriocyte gene expression. Here using a dual luciferase assay in mouse NIH/3T3 cell culture, we aimed to experimentally validate the computationally predicted interaction between Myzus persicae …

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Silicon Fertilization In Rice And Wheat: Dynamics With Trace Elements And Effect Of Silicate Slag Granular Size On The Release Pattern Of Monosilicic Acid In Soil, Wooiklee S. Paye Sep 2019

Silicon Fertilization In Rice And Wheat: Dynamics With Trace Elements And Effect Of Silicate Slag Granular Size On The Release Pattern Of Monosilicic Acid In Soil, Wooiklee S. Paye

LSU Doctoral Dissertations

Studies were conducted to evaluate the impact of silicon (Si) fertilization on the uptake of harmful trace elements in Louisiana rice production system, and document the effect of silicate slag granular size on its ability to supply Si in wheat. The influence of silicate slag and lime on the uptake and translocation of harmful trace elements in rice grain was determined. Results showed that both slag and lime had similar effects on pH at five of the nine sites investigated. Soil Si was significantly (P <0.001) increased with application of silicate slag at all sites. Lime and silicate slag had no effect on the concentration of trace elements in soil. However, increasing Si rates were negatively correlated with arsenic (As) and cadmium (Cd) concentration in rice grain. The release pattern of monosilicic acid (H4SiO4) from wollastonite and silicate slag was compared in a wheat greenhouse …

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Healthy Brown Rice-Based Extrudates Containing Straw Mushrooms: Effect Of Feed Moisture And Mushroom Powder Contents, Benjarat Tepsongkroh, Kamolwan Jangchud, Anuvat Jangchud, Chulaluck Charunuch, Witoon Prinyawiwatkul Sep 2019

Healthy Brown Rice-Based Extrudates Containing Straw Mushrooms: Effect Of Feed Moisture And Mushroom Powder Contents, Benjarat Tepsongkroh, Kamolwan Jangchud, Anuvat Jangchud, Chulaluck Charunuch, Witoon Prinyawiwatkul

Faculty Publications

This study was carried out to compare the nutritional values, total phenolic content (TPC), and antioxidant activity (AOA) of straw mushroom between egg-shaped (ME) and fully expanded pileus (MF) stages. Effects of three levels of feed moisture (FM: 13, 16, and 19%) and four levels of straw mushroom powder (MP: 0, 10, 15, and 20) were also investigated. It was set a constant barrel temperature profile due to temperature is not a factor for this study. The reseult showed that MF had higher nutritional values than ME. Increasing MP resulted in increased true density (TD), TPC, and AOA but decreased …

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Additive And Heterozygous (Dis)Advantage Gwas Models Reveal Candidate Genes Involved In The Genotypic Variation Of Maize Hybrids To Azospirillum Brasilense, Miriam Suzane Vidotti, Danilo Hottis Lyra, Júlia Silva Morosini, Ítalo Stefanine Correia Granato, Maria Carolina Quecine, João Lúcio De Azevedo, Roberto Fritsche-Neto Sep 2019

Additive And Heterozygous (Dis)Advantage Gwas Models Reveal Candidate Genes Involved In The Genotypic Variation Of Maize Hybrids To Azospirillum Brasilense, Miriam Suzane Vidotti, Danilo Hottis Lyra, Júlia Silva Morosini, Ítalo Stefanine Correia Granato, Maria Carolina Quecine, João Lúcio De Azevedo, Roberto Fritsche-Neto

Faculty Publications

Maize genotypes can show different responsiveness to inoculation with Azospirillum brasilense and an intriguing issue is which genes of the plant are involved in the recognition and growth promotion by these Plant Growth-Promoting Bacteria (PGPB). We conducted Genome-Wide Association Studies (GWAS) using additive and heterozygous (dis)advantage models to find candidate genes for root and shoot traits under nitrogen (N) stress and N stress plus A. brasilense. A total of 52,215 Single Nucleotide Polymorphism (SNP) markers were used for GWAS analyses. For the six root traits with significant inoculation effect, the GWAS analyses revealed 25 significant SNPs for the N stress …

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Life Satisfaction And Healthcare Utilization Among Immigrants To The United States, Merritt Christian Rachel Harrelson Aug 2019

Life Satisfaction And Healthcare Utilization Among Immigrants To The United States, Merritt Christian Rachel Harrelson

LSU Master's Theses

Previous research suggests a relationship between life satisfaction and healthcare utilization or HCU (Habibov & Afandi, 2016; Kim, Park, Sun, Smith, & Peterson, 2014). However, no study was found that examined this relationship among elderly American immigrants. The purpose of this study was to determine whether life satisfaction is linked to HCU for this population. The researcher of the current study applied binary logistic regression to data taken from the Health and Retirement Survey to determine whether changes in life satisfaction could be linked to variance in HCU across seven domains, including hospitalization, overnight nursing home stays, doctors visits, dentist …

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Comparison Of The Kinetic Parameters Of Escherichia Coli 0157:H7, Listeria Monocytogenes And Salmonella Typhimurium Derived From The Baranyi And Huang Models In A Chemically Defined Minimal Medium, Jose Isidro Fuentes Aug 2019

Comparison Of The Kinetic Parameters Of Escherichia Coli 0157:H7, Listeria Monocytogenes And Salmonella Typhimurium Derived From The Baranyi And Huang Models In A Chemically Defined Minimal Medium, Jose Isidro Fuentes

LSU Master's Theses

Microbial growth can be characterized by parameters such as lag time, growth rate, and maximum population density at any specific point of time. Mathematical models that predict microbial growth of foodborne pathogens are increasingly used in the food industry as a viable alternative to traditional methods of microbial enumeration. The Baranyi model has been widely used as the primary model of choice by many authors because of its performance and accuracy. The most recently developed Huang model has been less implemented and few comparisons between the Baranyi and Huang models have been made when modeling pathogenic growth. For this research, …

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Effects Of Adrenergic Or A Combination Of Adrenergic And Opioid Drugs On Assessments Of Insulin Sensitivity In Mares, Lauren Kerrigan Aug 2019

Effects Of Adrenergic Or A Combination Of Adrenergic And Opioid Drugs On Assessments Of Insulin Sensitivity In Mares, Lauren Kerrigan

LSU Master's Theses

Excitement is a problem when conducting endocrine tests on fractious horses. Epinephrine (EPI), for example, was shown to obliterate the insulin-induced decrease in blood glucose concentrations. Sedation may be a solution; however, perturbation of results may preclude useful information. The objectives of the four experiments presented herein were 1) to determine the effects of EPI on insulin response to glucose infusion (IR2G), 2) to assess the effects of the α-adrenergic sedative, detomidine (DET), alone or in combination with the opioid agonist, butorphanol (BUT), on IR2G and glucose response to insulin (GR2I), and 3) to assess the effects of BUT alone …

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Effects Of Visit Frequency On Swallowing Function During Organ Preservation For Head And Neck Cancer, Mathew Blaine Vansant Aug 2019

Effects Of Visit Frequency On Swallowing Function During Organ Preservation For Head And Neck Cancer, Mathew Blaine Vansant

LSU Doctoral Dissertations

Chemoradiotherapy is not without risk of injury to the muscles and nerves associated with swallowing function. Current research supports the use of prophylactic behavioral swallowing exercise in the HNC population, however, wide variations in swallowing treatment methodologies exist and no optimal SLP-patient visit frequency has been established. In addition, poor patient adherence to swallowing exercise appears prevalent. The current study explored the impact of speech language pathologist (SLP)-patient contact time, adherence to prophylactic behavioral swallowing exercises, and explored effects of exercise intensity on immediate post-radiation swallowing outcomes. Groups included a high frequency group (5 weekly SLP-patient visits, n = 15), …

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Retired Female Gymnasts' Reflections On Body Image And Sense Of Self, Briley Casanova Aug 2019

Retired Female Gymnasts' Reflections On Body Image And Sense Of Self, Briley Casanova

LSU Master's Theses

Researchers identify the early stages of retirement as a key developmental period when many female athletes struggle with both body image disturbances and changes to identity. Body image disturbances and changes to identity may be especially challenging for former female athletes participating in aesthetic focused sports such as gymnastics, because physical appearance plays an important role in elite performance. This study utilized semi-structured, in-depth interviews with five former NCAA Division I artistic gymnasts to learn about their experiences and perceptions of body image and athletic identity in the early stages of retirement. Three main themes emerged from the interviews: (a) …

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The Association Between Cardiovascular Disease Risk Factors And 25-Hydroxivitamin D And Related Analytes Among Hispanic/Latino Adults: A Pilot Study, Ramon A. Durazo-Arvizu, Reyna L. Pacheco-Dominguez, Christopher T. Sempos, Holly Kramer, Andrew N. Hoofnagle, Amber Pirzada, Richard S. Cooper, Martha L. Daviglus Aug 2019

The Association Between Cardiovascular Disease Risk Factors And 25-Hydroxivitamin D And Related Analytes Among Hispanic/Latino Adults: A Pilot Study, Ramon A. Durazo-Arvizu, Reyna L. Pacheco-Dominguez, Christopher T. Sempos, Holly Kramer, Andrew N. Hoofnagle, Amber Pirzada, Richard S. Cooper, Martha L. Daviglus

Faculty Publications

Although the association of vitamin D levels with cardiovascular risk profiles among Hispanics/Latinos has been studied, little is known about this association among Hispanics/Latinos with chronic conditions. This pilot study determined serum vitamin D and parathyroid hormone (PTH) levels in a sample of participants from the University of Illinois at the Chicago Cohort of Patients, Family and Friends (UIC Cohort) and examined their association with traditional cardiovascular disease risk factors. From July 2012 to June 2016, the UIC Cohort study enrolled and conducted clinical examinations on men and women ages 18 years and older, who had one or more diagnosed …

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A Multi-Ancestry Genome-Wide Study Incorporating Gene-Smoking Interactions Identifies Multiple New Loci For Pulse Pressure And Mean Arterial Pressure, Yun Ju Sung, Lisa De Las Fuentes, Thomas W. Winkler, Daniel I. Chasman, Amy R. Bentley, Aldi T. Kraja, Ioanna Ntalla, Helen R. Warren, Xiuqing Guo, Karen Schwander, Alisa K. Manning, Michael R. Brown, Hugues Aschard, Mary F. Feitosa, Nora Franceschini, Yingchang Lu, Ching Yu Cheng, Xueling Sim, Dina Vojinovic, Jonathan Marten, Solomon K. Musani, Tuomas O. Kilpeläinen, Melissa A. Richard, Stella Aslibekyan, Traci M. Bartz, Rajkumar Dorajoo, Changwei Li, Yongmei Liu, Tuomo Rankinen, Albert Vernon Smith, Salman M. Tajuddin, Bamidele O. Tayo, Wei Zhao Aug 2019

A Multi-Ancestry Genome-Wide Study Incorporating Gene-Smoking Interactions Identifies Multiple New Loci For Pulse Pressure And Mean Arterial Pressure, Yun Ju Sung, Lisa De Las Fuentes, Thomas W. Winkler, Daniel I. Chasman, Amy R. Bentley, Aldi T. Kraja, Ioanna Ntalla, Helen R. Warren, Xiuqing Guo, Karen Schwander, Alisa K. Manning, Michael R. Brown, Hugues Aschard, Mary F. Feitosa, Nora Franceschini, Yingchang Lu, Ching Yu Cheng, Xueling Sim, Dina Vojinovic, Jonathan Marten, Solomon K. Musani, Tuomas O. Kilpeläinen, Melissa A. Richard, Stella Aslibekyan, Traci M. Bartz, Rajkumar Dorajoo, Changwei Li, Yongmei Liu, Tuomo Rankinen, Albert Vernon Smith, Salman M. Tajuddin, Bamidele O. Tayo, Wei Zhao

Faculty Publications

Elevated blood pressure (BP), a leading cause of global morbidity and mortality, is influenced by both genetic and lifestyle factors. Cigarette smoking is one such lifestyle factor. Across five ancestries, we performed a genome-wide gene-smoking interaction study of mean arterial pressure (MAP) and pulse pressure (PP) in 129 913 individuals in stage 1 and follow-up analysis in 480 178 additional individuals in stage 2. We report here 136 loci significantly associated with MAP and/or PP. Of these, 61 were previously published through main-effect analysis of BP traits, 37 were recently reported by us for systolic BP and/or diastolic BP through …

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Bluebills And Bayou Bivalves: Hurricane-Driven Trophic Cascades Affect Wintering Abundance Of Lesser Scaup In Louisiana, Clay M. Stroud, Claire E. Caputo, Michael A. Poirrier, Larry A. Reynolds, Kevin M. Ringelman Aug 2019

Bluebills And Bayou Bivalves: Hurricane-Driven Trophic Cascades Affect Wintering Abundance Of Lesser Scaup In Louisiana, Clay M. Stroud, Claire E. Caputo, Michael A. Poirrier, Larry A. Reynolds, Kevin M. Ringelman

Faculty Publications

The estuaries of coastal Louisiana overwinter a continentally significant proportion of Lesser Scaup (Aythya affinis; colloquially, “bluebills”), a migratory bird species of conservation concern since population declines began in the 1980s. Thirty-eight years of aerial waterfowl surveys of Lake Pontchartrain—an oligohaline estuarine lagoon in southeast Louisiana—show that scaup abundance fluctuates between 0 and 1,194,907 birds, though the mechanisms driving this variation are unknown. Previous studies have shown that scaup feed primarily on mollusks, and so changes in the benthic prey community have the potential to strongly influence scaup dynamics on the Lake. Benthic communities are in turn shaped by both …

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Determining The Presence Or Absence Of Euscepes Postfasciatus In Haiti And Use Of Molecular Markers For The Distinction Of Cylas Formicarius Elangantulus Biotypes, Marie Rachele Lexidort Jul 2019

Determining The Presence Or Absence Of Euscepes Postfasciatus In Haiti And Use Of Molecular Markers For The Distinction Of Cylas Formicarius Elangantulus Biotypes, Marie Rachele Lexidort

LSU Master's Theses

Cylas formicarius elegantulus (Summers) and Euscepes postfaciatus (Fairmaire) are the most destructive sweetpotato weevils in the Caribean Basin. However, damage occurring in sweetpotato production in Haiti is attributed to C. formicarius (S), since it is known to be the most prevalent species while, conflicting information is available pertaining to the occurrence of the E. postfaciatus (F). This study was conducted in the summer of 2018 to determine the presence or absence of E. postfaciatus (F) in Haiti. 98 weevil samples from field (70% ) and infested sweetpotato roots from field and regional markets were collected (30%) in the most relevant …

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