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An Evaluation Of The Food Web Dynamics And Predator Prey Interactions In Scofield Reservoir, Lisa K. Winters

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Reservoirs are artificial, dynamic, and highly manipulated systems, where the appearance of either intentionally or unintentionally introduced species may disrupt interactions within an already complex food web. In some situations, a top predator fish may be stocked as a biological control agent, if these fish-eating predators monopolize on the nuisance and unwelcome prey. Scofield Reservoir, Utah has historically been an extremely popular blue-ribbon fishery. However, a recent decrease in rainbow trout catch and increase in the minnow, Utah chub, have made it difficult to find a balance between providing the public with a trophy sport fishery and maintaining an ecologically …

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Human Ecology: News & Publications (2012-2023)

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The Cultural Contexts Of Children’S Prosocial Behaviors, Maria Rosario De Guzman, Kieu-Anh Do, Car Mun Kok

Department of Child, Youth, and Family Studies: Faculty Publications

In 1976 Beatrice Whiting famously urged researchers to “unpackage” the concept of culture and related constructs. She highlighted the need in social and behavioral research to tease out the complex and often interwoven factors that might underlie superficial culture group differences in child outcomes and suggested looking more closely at the child’s learning environment, the details within which could provide important insight regarding children’s behaviors that could better explain how culture might be manifested in the developmental landscape (Whiting, 1976). Almost 40 years later, the importance of culture in children’s development is widely recognized, nonetheless researchers continue to wrestle with …

The Physiological Effects Of Resistant Starch On Obesity And Diabetes, Felicia Robin Goldsmith

LSU Doctoral Dissertations

Three studies were performed to determine the effects of RS on body weight and adiposity in HF DIO, diabetic C57BL/6J and GLP-1 receptor KO mice as well as genetically obese ZDF rats. The first study was a dose-response experiment for HM260 (0, 15, or 28 g/100 g diet) against the anti-diabetes drug SG (Januvia®) (0 or 0.4 g/100 g diet) in HF DIO C57BL/6J (n=55) mice injected with STZ in order to assess synergy. The most effective combination was used in the second study, the purpose of which was to determine the mechanistic importance of GLP-1 in GLP-1R KO (n=25) …

Development Of A Food Preference Survey, Amber Bourgeois Mcguerty

LSU Master's Theses

This study developed a food preference survey to estimate adolescents’ willingness to consume energy-dense foods and sugar-sweetened beverages. Five focus group interviews with 13 to 19 year-old students were conducted, and items representing energy-dense foods, energy-dilute foods, sweetened beverages, and unsweetened beverages were determined (5 per category). The final survey was administered to 234 students. Willingness to consume items was assessed using a 7-point Likert Scale (1, representing “Extremely Unwilling” to 7, indicating “Extremely Willing”). Exploratory Factor Analysis using Principal Axis factoring with a Promax (oblique) rotation revealed two factors. Factor one included French fries, Kool-Aid, glazed donuts, cookies, lemonade, …