Digital Commons Network^™

Stochasticity Directs Adaptive Evolution Toward Nonequilibrium Evolutionary Attractors, John Delong, Clayton E. Cressler

School of Biological Sciences: Faculty Publications

Stochastic processes such as genetic drift may hinder adaptation, but the effect of such stochasticity on evolution via its effect on ecological dynamics is poorly understood. Here we evaluate patterns of adaptation in a population subject to variation in demographic stochasticity. We show that stochasticity can alter population dynamics and lead to evolutionary outcomes that are not predicted by classic eco-evolutionary modeling approaches. We also show, however, that these outcomes are governed by nonequilibrium evolutionary attractors— these are maxima in lifetime reproductive success when stochasticity keeps the ecological system away from the deterministic equilibrium. These NEEAs alter the path of …

The Consumption Of Viruses Returns Energy To Food Chains, John Delong, James L. Van Etten, Zeina Al-Ameeli, Irina Agarkova, David Dunigan

School of Biological Sciences: Faculty Publications

Viruses impact host cells and have indirect effects on ecosystem processes. Plankton such as ciliates can reduce the abundance of virions in water, but whether virus consumption translates into demographic consequences for the grazers is unknown. Here, we show that small protists not only can consume viruses they also can grow and divide given only viruses to eat. Moreover, the ciliate Halteria sp. foraging on chloroviruses displays dynamics and interaction parameters that are similar to other microbial trophic interactions. These results suggest that the effect of viruses on ecosystems extends beyond (and in contrast to) the viral shunt by redirecting …

Pathways Of Density Dependence And Natural Selection In Modern Humans, John Delong

School of Biological Sciences: Faculty Publications

Living things depend on a flow of energy and materials to grow, reproduce, and maintain their bodies. Populations are aggregations of individuals, so they too depend on resources. Humans use many fuels derived from the Earth’s photosynthetic energy, which in turn support a population that often occurs at unusually high densities for a mammal. Like most populations, growing human populations may experience negative feedbacks from population size unless the socio-economic system in which the population lives grows fast enough to maintain resource flows to individuals and to limit the downsides of high density. I map out a simple view of …

Germination And Simulated Gastrointestinal Digestion Of Chickpea (Cicer Arietinum L.) In Exhibiting In Vitro Antioxidant Activity In Gastrointestinal Epithelial Cells, Ashley Newton, Kaustav Majumder

Department of Food Science and Technology: Faculty Publications

Plant-based proteins, in particular pulse proteins, have grown in popularity worldwide. Germination, or sprouting, is an effective method to release peptides and other dietary compounds. However, the combination of germination and gastrointestinal digestion in enhancing the release of dietary compounds with potential health-beneficial biological activity has yet to be entirely elucidated. The present study illustrates the impact of germination and gastrointestinal digestion on the release of dietary compounds with antioxidant activity from chickpeas (Cicer arietinum L.). Germination up to 3 days (D0 to D3) increased the peptide content by denaturing chickpea storage proteins and increased the degree of hydrolysis …

Morbidity Profile Among Older People At Primary Health Care Centers In Saudi Arabia During The Period 2012-2020, Maysoon M. Al-Amoud, Doaa I. Omar, Eman N. Almashjary, Shaker A. Alomary

Saudi Medical Journal

Objectives: To evaluate the morbidity profile and explore the geriatric giants, health problems, and their risk factors among old people in the older people health clinics at primary health care centers (PHCCs) in Saudi Arabia. Methods: This is a record-based descriptive cross-sectional study. Data was collected between 2012-2020 using the health data of older people to whom comprehensive geriatric assessment (CGA) was carried out at 1,481 PHCCs in Saudi Arabia. Data included sociodemographic and health related characteristics, medications, results of CGA, complete clinical examination, and laboratory results. Assessment was carried out for diabetes, hypertension, obesity, underweight, vision and hearing impairments, …

Awareness Of The Role Of Nutrition In Cancer Causation And Prevention Among Rural Adult Population: A Cross-Sectional Study, Sayana Basheer, Kavya G. Upadhya, Sana Khader M

Digital Journal of Clinical Medicine

Background

In recent years, nutrition has received an increasingly important role in the aetiology of cancer. Thus, public education about dietary factors associated with cancer risk or prevention could be an important intervention for cancer prevention, particularly in low- and middle-income countries where the burden of cancer is increasing rapidly and access to care is limited. This study aimed to assess the awareness among rural adults about the role of nutrition in cancer development and its prevention.

Methods

A cross-sectional study was conducted among 300 individuals in the adult population (> 18 years) in rural field practice area of a …

Site-Specific Analysis Of The Incidence Rate Of Enterotoxigenic Escherichia Coli Infection Elucidates An Association With Childhood Stunting, Wasting, And Being Underweight: A Secondary Analysis Of The Mal-Ed Birth Cohort, Ahshanul Haque, Sabiha Nasrin, Parag Palit, Rina Das, Barbie Zaman Wahid, Amran Gazi, Mustafa Mahfuz, Abu Syed Golam Faruque, Tahmeed Ahmed

Department of Nutrition and Health Sciences: Faculty Publications

Asymptomatic infection by fecal enteropathogens is a major contributor to childhood malnutrition. Here, we investigated the incidence rate of asymptomatic infection by enterotoxigenic Escherichia coli (ETEC) and assessed its association with childhood stunting, wasting, and being underweight among children under 2 years of age. The Malnutrition and Enteric Disease birth cohort study included 1,715 children who were followed from birth to 24 months of age from eight distinct geographic locations including Bangladesh, Brazil, India, Peru, Tanzania, Pakistan, Nepal, and South Africa. The TaqMan array card assay was used to determine the presence of ETEC in the nondiarrheal stool samples collected …

Variance In Offspring Sex Ratio And Maternal Allocation In A Highly Invasive Mammal, Sarah M. Chinn, Timothy J. Smyser, James C. Beasley

United States Department of Agriculture Wildlife Services: Staff Publications

Skewed sex ratios at birth are widely reported in wild populations, however, the extent to which parents are able to modulate the sex ratio of offspring to maximize their own fitness remains unclear. This is particularly true for highly polytocous species as maximizing fitness may include trade-offs between sex ratio and the size and number of offspring in litters. In such cases, it may be adaptive for mothers to adjust both the number of offspring per litter and offspring sex to maximize individual fitness. Investigating maternal sex allocation in wild pigs (Sus scrofa) under stochastic environmental conditions, we predicted that …

Invasive Frogs Show Persistent Physiological Differences To Elevation And Acclimate To Colder Temperatures, Jack R. Marchetti, Karen H. Beard, Emily E. Virgin, Erin L. Lewis, Steven C. Hess, Kwanho C. Ki, Layne O. Sermersheim, Adriana P. Furtado, Susannah S. French

United States Department of Agriculture Wildlife Services: Staff Publications

The coqui frog (Eleutherodactylus coqui) was introduced to the island of Hawai’i in the 1980s and has spread across much of the island. Concern remains that this frog will continue to expand its range and invade higher elevation habitats where much of the island’s endemic species are found. We determined whether coqui thermal tolerance and physiology change along Hawai’i’s elevational gradients. We measured physiological responses using a short-term experiment to determine baseline tolerance and physiology by elevation, and a long-term experiment to determine the coqui’s ability to acclimate to different temperatures. We collected frogs from low, medium, and …

Academic Stress And Anxiety In Nursing Students: An Aerobic Exercise Intervention, Mariko Danielle Aka

DNP Research Projects

Abstract

Background: The demands of rigorous nursing education programs often cause students to experience high levels of stress and anxiety during their schooling. Moderate to high academic stress and anxiety levels impact nursing students around the world. This is significant as academic stress and anxiety contribute to decreased academic success, program completion, and student health.

Local Problem: Students at Kettering College and Southern Adventist University were found to have moderate academic stress and anxiety using the SNSI and GAD-7.

Intervention: Participants (N = 24) engaged in a 4-week aerobic-exercise intervention. They were required to complete a minimum of 80 …

The Impact Of Physical Activity Education During Pregnancy, Lizeth Banuchi

DNP Research Projects

Abstract

Background: Physical Activity (PA) during pregnancy is important to maintain optimal maternal and neonatal health. Gestational Diabetes Mellitus (GDM) requires close monitoring during pregnancy due to the health risk it can cause to mother and fetus. It is evident that PA can help improve maternal health outcomes to positively offer overall wellness throughout the pregnancy.

Objective: The purpose of this Quality Improvement Project (QIP) is to evaluate the impact of PA education on PA implementation during pregnancy and improve clinical practice for healthcare providers to introduce PA education during prenatal care per ACOG and CESP guidelines.

Method: This quality …

Nutritional Medicine: Education For Advanced Practice Providers, Natalie Organ

DNP Research Projects

Abstract

OBJECTIVE: The project's primary goal was to educate the APP and develop positive attitudes and beliefs concerning plant-based nutrition regarding obesity, diabetes, cardiovascular disease, and cancer. The project addressed a crucial gap in healthcare education. APPs were not routinely given the chance to learn nutritional medicine, leading to decreased confidence in providing nutritional guidance in clinical practice.

METHODS: The DNP project participants were practicing advanced practice providers. The Knowledge, Attitude, Behavior (KAB) education theory and CREATION Life were used. This project used Qualtrics to send a pre-and post-intervention survey titled Student Survey for Nutritional Medicine. The intervention was a …

A Lifestyle Management Coaching Intervention For Fear Of Cancer Recurrence In Young Breast Cancer Survivors, Lisa R. Murphy

DNP Research Projects

Abstract

Objective: A significant challenge facing young breast cancer (BC) survivors is learning how to manage fear of cancer recurrence (FCR) during survivorship. Limited tailored FCR interventions and age-appropriate support exist. This Doctor of Nursing (DNP) project, based upon best practice guidelines, aimed to evaluate how a Lifestyle Management Coaching Intervention (LMCI) could help young female BC survivors learn how to decrease and manage their FCR more effectively and experience improved health outcomes.

Method: Eligible participants were female BC survivors aged 18-59 with Stage I-III BC demonstrating elevated baseline FCR screening scores during the extended survival period recruited from the …

Effects Of A Residential Lifestyle Intervention Program On Selected Lipid Measures And Nutritional Choices, Delores M. Rugless

DNP Research Projects

Abstract

Objective: Cardiovascular disease has been the leading cause of death since the early 1920s. As with other chronic diseases, cardiovascular disease is primarily influenced by behaviors and the environment, with poor nutrition being a major contributing factor. Despite knowing the importance of lifestyle modification to manage cardiovascular disease effectively, many individuals have difficulty adhering to lifestyle modification principles. Residential lifestyle modification centers provide the education and support necessary to assist individuals with implementing behavioral changes. This DNP project aimed to demonstrate the value of diet modification implemented at a residential lifestyle center to decrease specific cardiovascular risk factors. Method: …

Implementing Prediabetes Screening During Hospitalization In An Internal Medicine Unit, Roxana Bustamante

Yale School of Nursing Digital Theses

About 1 in 3 adults in the United States have prediabetes, yet 8 in 10 of people are unaware of having this condition. The gap in timely diagnosis of prediabetes hinders opportunities for awareness of risk for type 2 diabetes (T2DM), self-management, and referral to preventative interventions. Individuals with undiagnosed prediabetes have 1.3 times higher risk for hospitalization. Extending prediabetes screening to the inpatient hospital setting offers opportunity to identify undiagnosed prediabetes. The purpose of this DNP project was to implement a prediabetes screening algorithm in the hospital setting to identify undiagnosed prediabetes and initiate patient education on preventative lifestyle …

Increasing Transplant Medication Knowledge Through Implementation Of A Medication Education Intervention Algorithm, Colleen Chime Karkhang

Yale School of Nursing Digital Theses

Limited health literacy (LHL) has profound implications on measured transplant outcomes as it is associated with higher incidence of graft loss, organ rejection, decreased immunosuppression medication adherence, and increased hospital re-admissions. Identification of patients with limited health literacy allows for opportunities to provide targeted medication education that allows patients to become more active participants in their care while increasing their transplant medication education knowledge and self-efficacy. The aims of this DNP projects were to develop and implement a medication education intervention algorithm that incorporates health literacy scores and evidenced based educational interventions amongst kidney transplant recipients (initial transplants and re-admissions) …

Conflicts Of Interest In The Assessment Of Chemicals, Waste, And Pollution, Andreas Schäffer, Ksenia J. Groh, Gabriel Sigmund, David Azoulay, Thomas Backhaus, Michael G. Bertram, Bethanie Carney Almroth, Ian T. Cousins, Alex T. Ford, Joan O. Grimalt, Yago Guida, Maria C. Hansson, Yunsun Jeong, Rainer Lohmann, David Michaels, Leonie Mueller, Jane Muncke, Gunilla Öberg, Marcos A. Orellana, Edmond Sanganyado, Ralf Bernhard Schäfer, Ishmail Sheriff, Ryan C. Sullivan, Noriyuki Suzuki, Laura N. Vandenberg, Marta Venier, Penny Vlahos, Martin Wagner, Fang Wang, Mengjiao Wang, Anna Soehl, Marlene Agerstrand, Miriam L. Diamond, Martin Scheringer

Graduate School of Oceanography Faculty Publications

Pollution by chemicals and waste impacts human and ecosystem health on regional, national, and global scales, resulting, together with climate change and biodiversity loss, in a triple planetary crisis. Consequently, in 2022, countries agreed to establish an intergovernmental science–policy panel (SPP) on chemicals, waste, and pollution prevention, complementary to the existing intergovernmental science–policy bodies on climate change and biodiversity. To ensure the SPP’s success, it is imperative to protect it from conflicts of interest (COI). Here, we (i) define and review the implications of COI, and its relevance for the management of chemicals, waste, and pollution; (ii) summarize established tactics …

Pectus Excavatum With Bar Placement Eras, Children's Mercy Kansas City

Clinical Pathways (Formally Known As Care Process Models)

No abstract provided.

Glacial Southern Ocean Expansion Recorded In Foraminifera-Bound Nitrogen Isotopes From The Agulhas Plateau During The Mid-Pleistocene Transition, B. A. Marcks, T. P. Dos Santos, D. V.O. Lessa, A. Cartagena-Sierra, M. A. Berke, A. Starr, I. R. Hall, R. P. Kelly, Rebecca S. Robinson

Graduate School of Oceanography Faculty Publications

The emergence of 100-Kyr glacial cycles (The Mid-Pleistocene Transition [MPT]) is attributed in part to slower global overturning circulation and iron stimulation of biological carbon drawdown in the Southern Ocean. We present foraminifera-bound nitrogen isotope values and polar planktic foraminifera abundances from the Agulhas Plateau that show that increases in biogenic sediment accumulation coincide with northward migrations of the Subtropical Frontal Zone (STFZ) and elevated foraminifera-bound nitrogen isotope values during MPT glacial episodes. The nitrogen isotope values of two planktic foraminifera species, Globigerina bulloides and Globorotalia inflata show remarkable coherence amongst the sea surface temperature gradient between the STFZ and …

The Journey Box: Promoting Language Development While Exploring One’S Identity, David Wolff

Open Educational Resources - Teaching and Learning

A Journey Box allows students to explore and share their family’s historical narrative using primary sources like interviews and artifacts. Students explore different facets of their own family’s history and journey to America while engaging in a larger shared experience among classmates to understand different perspectives. The Journey Box develops oral and written language skills while supporting individual’s exploration of their culture and identity.

Use Of Amino Acid Isotope Analysis To Investigate Capital Versus Income Breeding Strategies In Migratory Avian Species, Nico Lübcker, John P. Whiteman, Oliver N. Shipley, Keith A. Hobson, Seth D. Newsome

Biological Sciences Faculty Publications

1. Income and capital breeding represent opposing ends of a continuum of reproductive strategies. Quantifying nutrient allocation to reproduction is challenging, but recent advances in compound-specific stable isotope analysis hold promise for tracing the source of individual compounds allocated to reproduction.

2. Here, we describe a novel approach of using measured carbon (δ13C) and nitrogen (δ15N) isotope values of individual amino acids (AAs) in pectoral muscle of egg-laying females and egg yolk as a useful tool to quantify the reliance on income versus capital breeding in migrating species. We used white-fronted (Anser albifrons frontalis), lesser snow (A. …

Editorial: New Frontiers In The Application Of Stable Isotopes To Ecological And Ecophysiological Research, Keith A. Hobson, John P. Whiteman, Seth D. Newsome

Biological Sciences Faculty Publications

No abstract provided.

Perspective: Dimensions Of Environment And Health In Arctic Communities, Rainer Lohmann, Bonita Beatty, Jessica Graybill, Elena Grigorieva, Ketil Lenert Hansen, Anu Soikkeli

Graduate School of Oceanography Faculty Publications

In the Arctic, environment and health are linked in myriad ways. A key emphasis has been on numerous long-lived contaminants in traditional foods, particularly marine mammals, and their well-documented impacts on human, animal and environmental health (“One health approach”). More recent concerns for Indigenous communities focus on the (side) effects of the switch to a modern, processed diet, which is accompanied by a loss of tradition and emerging health impacts. Furthermore, the availability of traditional foods is increasingly threatened by the impacts of climate change, which also causes the emergence and spread of new and old diseases, such as anthrax. …

Dietary Plasticity Linked To Divergent Growth Trajectories In A Critically Endangered Sea Turtle, Matthew D. Ramirez, Larisa Avens, Anne B. Meylan, Donna J. Shaver, Angela R. Stahl, Peter A. Meylan, Jamie M. Clark, Lyndsey N. Howell, Brian A. Stacy, Wendy G. Teas, Kelton W. Mcmahon

Graduate School of Oceanography Faculty Publications

Foraging habitat selection and diet quality are key factors that influence individual fitness and meta-population dynamics through effects on demographic rates. There is growing evidence that sea turtles exhibit regional differences in somatic growth linked to alternative dispersal patterns during the oceanic life stage. Yet, the role of habitat quality and diet in shaping somatic growth rates is poorly understood. Here, we evaluate whether diet variation is linked to regional growth variation in hawksbill sea turtles (Eretmochelys imbricata), which grow significantly slower in Texas, United States versus Florida, United States, through novel integrations of skeletal growth, gastrointestinal content (GI), and …

17th Annual Higher Ground Women's Leadership Conference, The Grace E. Harris Leadership Institute At Virginia Commonwealth University, Vickisha D. Harris, Antoinette Allen

GEHLI - 2026 VCUL Team Project Publications

Abstract: This year we invite women from diverse backgrounds to embark on a transformative journey of overcoming grief, grudges, and guilt. This empowering event aims to provide a safe and supportive space for women to share their stories, find solace, and embark on a path of healing and self-discovery. Grief, grudges, and guilt are powerful emotions that can burden our minds and hinder personal growth. This conference recognizes that many women face these emotional challenges, whether due to loss, conflicts, or self-imposed expectations. Through a combination of insightful workshops, thought-provoking panel discussions, and uplifting keynote speeches, participants will gain the …

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Featured Faculty Mentor/Student Team, Gisela Erf, Alessandro Rocchi

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Temporal, Phenotypic, And Quantitative Characterization Of Thyroid Infiltrating Mononuclear Cells During Development Of Spontaneous Autoimmune Thyroiditis In Obese Strain Chickens, Katelyn M. Clark, Chrysta N. Beck, Gisela F. Erf

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

The Obese strain (OS) of chickens spontaneously develops autoimmune thyroiditis (SAT) and is a well-established biomedical model for Hashimoto’s thyroiditis in humans. Both conditions are characterized by the infiltration of thyroid glands with mononuclear immune cells resulting in the destruction of thyroid tissue and impairment of the thyroid’s endocrinological functions. Past studies described immune cell infiltration in thyroids of the OS chickens, but the time-course, cell composition, and relative amounts of the various immune cells infiltrating the thyroids have not been well defined. In this project, frozen and stored thyroid glands that were previously collected at 1, 4, 7, 14, …

Determining The Effectiveness Of Rosemary Essential Oil On The Shelf Life Of Ground Beef Under Different Lighting Conditions, Jordan T. Looper, Kelly R. Vierck

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

This study determined the effectiveness of rosemary extract on the shelf life of ground beef patties under different retail display conditions. Ground beef patties were produced from an 85%:15% blend (lean:fat). Patties were formed from batches of control or amended with rosemary extract. Patties were individually packaged using overwrap. Groups were assigned into one of two lighting groups (3000K and 3500K). Patties were placed in a simulated retail display for 5 d under continuous lighting and rotated once a day. Lipid oxidation and color samples were taken each day. Relating to lipid oxidation, there was no three-way interaction between display …

Instructions For Authors, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.