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Examining Genomics And Your Health, Part 1: Your Genome And Your Health, Emily F. Schmitt Lavin

Biology Faculty Proceedings, Presentations, Speeches, Lectures

No abstract provided.

Microhabitat Selection By Marine Mesoconsumers In A Thermally Heterogeneous Habitat: Behavioral Thermoregulation Or Avoiding Predation Risk?, Jeremy Vaudo, Michael Heithaus

Marine & Environmental Sciences Faculty Articles

Habitat selection decisions by consumers has the potential to shape ecosystems. Understanding the factors that influence habitat selection is therefore critical to understanding ecosystem function. This is especially true of mesoconsumers because they provide the link between upper and lower tropic levels. We examined the factors influencing microhabitat selection of marine mesoconsumers – juvenile giant shovelnose rays (Glaucostegus typus), reticulate whiprays (Himantura uarnak), and pink whiprays (H. fai) – in a coastal ecosystem with intact predator and prey populations and marked spatial and temporal thermal heterogeneity. Using a combination of belt transects and data …

Florida Keys Population Abundance Estimates For Nine Coral Species Proposed For Listing Under The U.S. Endangered Species Act, Steven Miller, William F. Precht, Leanne M. Rutten, Mark Chiappone

Marine & Environmental Sciences Faculty Reports

This report presents abundance and size-class distribution estimates for nine coral species in the Florida Keys and Dry Tortugas, all of which are proposed for listing or reclassification under the U.S. Endangered Species Act (ESA). The lack of population data for these species was highlighted as a deficiency in the ESA Review Process by the Biological Review Team (BRT) in their Status Review (Brainard et al. 2011) and also by the National Oceanic and Atmospheric Administration (NOAA) (Federal Register 2012). Field sampling protocols were adapted from Aronson et al. (1994) and the Atlantic and Gulf Rapid Reef Assessment program (Kramer …

Coral Population Trajectories, Increased Disturbance And Management Intervention: A Sensitivity Analysis, Bernhard Riegl, M. L. Berumen, Andrew Bruckner

Marine & Environmental Sciences Faculty Articles

Coral reefs distant from human population were sampled in the Red Sea and one-third showed degradation by predator outbreaks (crown-of-thorns-starfish = COTS observed in all regions in all years) or bleaching (1998, 2010). Models were built to assess future trajectories. They assumed variable coral types (slow/fast growing), disturbance frequencies (5,10,20 years), mortality (equal or not), and connectivity (un/connected to un/disturbed community). Known disturbances were used to parameterize models. Present and future disturbances were estimated from remote-sensing chlorophyll and temperature data. Simulations and sensitivity analysis suggest community resilience at >20-year disturbance frequency, but degradation at higher frequency. Trajectories move from fast-grower …

Changes In A Tropical Seagrass Environment After Installation Of Small Artificial Reefs, Joseph M. Penta

HCNSO Student Theses and Dissertations

The 3-dimensional structural complexity of coral reef environments is positively correlated with measurements of biodiversity and biomass. EcoReefs are a type of artificial reef that resemble branching corals, such as Acropora cervicornis, which provide an environment of high structural diversity, and that are effective at recruiting and sustaining fish populations. Little is known, however, about the effects of EcoReefs on the surrounding environments in which they are deployed, so this study examined the results after installing Ecoreef modules in a seagrass environment. The installation occurred in March 2009 at Coco Cay in the Berry Island chain in the Bahamas …

A Review Of Predator-Prey Interactions Within Marine Ecosystems With A Focus On Top Predator Influences On Ecosystem Stability And Fisheries Management Implications, Kathleen Cook Hollowell

HCNSO Student Capstones

The objective of this paper is to review the effects top predators have on and within marine ecosystems, although the full impact that they have isn’t well understood. This paper will define and explain different types of direct and indirect interactions of predators on prey, the types of models or observing techniques currently used to study these interactions, the reasons for top predator loss and the impact top predator loss could have on marine ecosystems.

Evidence For The Requirement Of 14-3-3eta (Ywhah) In Meiotic Spindle Assembly During Mouse Oocyte Maturation, Santanu De, Douglas Kline

Biology Faculty Articles

Background

The 14-3-3 (YWHA) proteins are central mediators in various cellular signaling pathways regulating development and growth, including cell cycle regulation. We previously reported that all seven mammalian 14-3-3 isoforms are expressed in mouse oocytes and eggs and that, 14-3-3η (YWHAH) accumulates and co-localizes in the region of meiotic spindle in mouse eggs matured in vivo. Therefore, we investigated the role of 14-3-3η in spindle formation during mouse oocyte maturation.

Results

Examination of oocytes matured in vitro demonstrated that 14-3-3η accumulates in both meiosis I and II spindles. To explore if 14-3-3η interacts directly with α-tubulin in meiotic spindles, …

Tasers And Community Controversy: Investigating Training Officer Perceptions Of Public Concern Over Conducted Energy Weapons, Joseph De Angelis, Brian Wolf

The Qualitative Report

Over the last several decades, “Tasers,” “stun guns” and other conducted energy devices (CEDs) have become a widely adopted, though publicly controversial, form of police restraint technology. While there is a growing body of research on the physiological effects of these types of weapons, less attention has been devoted to the social effects of this technology. This paper draws on in - depth interviews with a stratified random sample of police training officers from two states (n=27) to explore the effect that community controversy over the use of CEDs has had on police organizational practices. In particular, we explore how …

Queering Methodologies: Challenging Scientific Constraint In The Appreciation Of Queer And Trans Subjects, Joshua M. Ferguson

The Qualitative Report

Qualitative studies require a queer perspective to challenge stagnant forms of scientific discourse. This paper argues for a deconstruction of hegemonic qualitative practices in order to appreciate and listen to queer and trans subjects when employing qualitative research and methodologies. I focus on qualitative methods from an audiovisual perspective to suggest that there is scientific constraint in the way researchers still approach qualitative methodologies. I propose some foundations for thinking about queer qualitative methods that employs queer theory in relation to a self - reflexive creative perspective towards ethics, research and representation. Moreover, I critically analyze the HBO trans documentary, …

Ocean Current Measurements: Challenges And Opportunities In The Florida Current, William E. Baxley

HCNSO Student Capstones

The water velocities offshore south Florida are dominated by the Florida Current, and these effects result not only from the tremendous flow of water between Florida and the Bahamas, but also from the eddies and other rotational components imparted by the change in flow direction from eastward to northward along the Florida Keys and the end of the peninsula. These currents have been measured for decades, with methods ranging from subsurface floats to acoustic Doppler current profilers (ADCPs) and surface current measuring radars. Data suggests that there is a large degree of variability in the mean flow, including significant vorticity …

The Current Volume 23 : Issue 25, Nova Southeastern University

Student Newspapers

No abstract provided.

Trans-Species Activity Of A Nonself Recognition Domain, Robert P. Smith, Kenji Wellman, Myron L. Smith

Biology Faculty Articles

Background: The ability to distinguish nonself from self is a fundamental characteristic of biological systems. In the filamentous fungus Neurospora crassa, multiple incompatibility genes mediate nonself recognition during vegetative growth. One of these genes, un-24, encodes both nonself recognition function and the large subunit of a type I ribonucleotide reductase, an evolutionarily conserved enzyme that is essential for the conversion of NDP precursors into dNDPs for use in DNA synthesis. Previous studies have shown that co-expression of the two allelic forms of un-24, Oakridge (OR) and Panama (PA), in the same cell results …

The Current Volume 23 : Issue 24, Nova Southeastern University

Student Newspapers

No abstract provided.

Supplemental Feeding For Ecotourism Reverses Diel Activity And Alters Movement Patterns And Spatial Distribution Of The Southern Stingray, Dasyatis Americana, Mark John Corcoran, Bradley M. Wetherbee, Mahmood S. Shivji, Matthew Potenski, Demian D. Chapman, Guy Harvey

Marine & Environmental Sciences Faculty Articles

Southern stingrays, Dasyatis americana, have been provided supplemental food in ecotourism operations at Stingray City Sandbar (SCS), Grand Cayman since 1986, with this site becoming one of the world’s most famous and heavily visited marine wildlife interaction venues. Given expansion of marine wildlife interactive tourism worldwide, there are questions about the effects of such activities on the focal species and their ecosystems. We used a combination of acoustic telemetry and tag-recapture efforts to test the hypothesis that human-sourced supplemental feeding has altered stingray activity patterns and habitat use at SCS relative to wild animals at control sites. Secondarily, we …

The Current Volume 23 : Issue 23, Nova Southeastern University

Student Newspapers

No abstract provided.

Synthesizing Larval Competence Dynamics And Reef-Scale Retention Reveals A High Potential For Self-Recruitment In Corals, Joana Figueiredo, Andrew H. Baird, Sean R. Connolly

Marine & Environmental Sciences Faculty Articles

Many organisms have a complex life-cycle in which dispersal occurs at the propagule stage. For marine environments, there is growing evidence that high levels of recruitment back to the natal population (self-recruitment) are common in many marine organisms. For fish, swimming behavior is frequently invoked as a key mechanism allowing high self-recruitment. For organisms with weak-swimming larvae, such as many marine invertebrates, the mechanisms behind self-recruitment are less clear. Here, we assessed whether the combination of passive retention of larvae due to re-circulation processes near reefs, and the dynamics of settlement competence, can produce the high levels of self-recruitment previously …

Antioxidant Treatment Regulates The Humoral Immune Response During Acute Viral Infection, Katie E. Crump, P. Kent Langston, Sujana Rajkarnikar, Jason M. Grayson

Biology Faculty Articles

Generation of reactive oxygen intermediates (ROI) following antigen receptor ligation is critical to promote cellular responses. However, the effect of antioxidant treatment on humoral immunity during a viral infection was unknown. Mice were infected with lymphocytic choriomeningitis virus (LCMV) and treated with Mn(III)tetrakis(4-benzoic acid)porphyrin chloride (MnTBAP), a superoxide dismutase mimetic, from days 0 to 8 postinfection. On day 8, at the peak of the splenic response in vehicle-treated mice, virus-specific IgM and IgG antibody-secreting cells (ASC) were decreased 22- and 457-fold in MnTBAP-treated animals. By day 38, LCMV-specific IgG ASC were decreased 5-fold in the bone marrow of drug-treated mice, …

The Current Volume 23 : Issue 22, Nova Southeastern University

Student Newspapers

No abstract provided.

The Current Volume 23 : Issue 21, Nova Southeastern University

Student Newspapers

No abstract provided.

The Current Volume 23 : Issue 20, Nova Southeastern University

Student Newspapers

No abstract provided.

The Current Volume 23 : Issue 19, Nova Southeastern University

Student Newspapers

No abstract provided.

A Qualitative Study Of Women’S Decisions Not To Have A Hysterectomy, Erin Fredericks

The Qualitative Report

In focusing on individual and physician demographics and system characteristics that lead to hysterectomy rate variations, researchers overlook the impact of culturally mediated meanings women assign to their bodies, hysterectomy, and other treatments. In this study I sought to provide a fuller description of this decision - making process by examining the role of meaning making in women’s decision not to have a hysterectomy. Using a descriptive qualitative approach, nine women diagnosed with menstrual disorders in Halifax, Nova Scotia, Canada each took part in a semi - structured interview. Factors deemed “irrational” in bio medical understandings of informed choice played …

The Current Volume 23 : Issue 17, Nova Southeastern University

Student Newspapers

No abstract provided.

Mixed Methodology Approaches To Exploring Spiritual Transformation, Lewis Mehl-Madrona, Barbara Mainguy, Michael Pickren Valenti

The Qualitative Report

Research suggests that spiritual transformation, a change in the way a person considers the sacred, can change medical outcome (Pargament, 2006) Psychometric studies have failed to identify specific factors, but qualitative reports detail an experience that can be reliably shown to have an impact. We report on the development of a rubric for quantifying levels of spiritual transformation. Narrative analysis techniques were used to quantify levels of spiritual transformation from participants’ life stories, experience with traditional healers, and subsequent medical status. A quantification rubric was developed and 111 assistants rated the stories after a three - hour training session. Inter …

Women’S Experiences With Postpartum Anxiety: Expectations, Relationships, And Sociocultural Influences, Andrea A. Wardrop, Natalee E. Popadiuk

The Qualitative Report

Evidence about anxiety in the postpartum is sparse and contradictory. Our research expands this knowledge by using a qualitative methodology, the Feminist Biographical Method, to explore first time mothers’ experiences of postpartum anxiety. Data collection included 1.5 to 2.0 hour interviews with six women about their experiences of anxiety in their transition to motherhood. We transcribed the interviews and used an iterative hermeneutic coding process to develop themes and subthemes over the course of four coding cycles. The findings include five major themes: (a) experiences of anxiety, (b) expectations of a new mother, (c) issues of support, (d) societal scripts …

The Current Volume 23 : Issue 16, Nova Southeastern University

Student Newspapers

No abstract provided.

Stories Of Aboriginal Transracial Adoption, Simon Nuttgens

The Qualitative Report

Despite the significant number of transracial Aboriginal adoptions that have taken place in Canada, little research is available that addresses the psychological and psychosocial ramifications for the children involved. The scant literature that does exist raises concerns about the psychological impact of this type of adoption. The present research used narrative inquiry to bring greater understanding to the experiences of Aboriginal children raised in non Aboriginal families. The life stories of four Aboriginal adults who were adopted as children were gathered through audio - taped interviews. Seven “narrative threads” salient across the four participants’ life stories include: disconnection, passing, diversion, …

When Hawks Give Rise To Doves: The Evolution Of Enforcement Strategies, Omar Tonsi Eldakar, W. W. Driscoll, A. C. Gallup

Biology Faculty Articles

The question of how altruism can evolve despite its local disadvantage to selfishness has produced a wealth of theoretical and empirical research capturing the attention of scientists across disciplines for decades. One feature that has remained consistent through this outpouring of knowledge has been that researchers have looked to the altruists themselves for mechanisms by which altruism can curtail selfishness. An alternative perspective may be that just as altruists want to limit selfishness in the population, so may the selfish individuals themselves. These alternative perspectives have been most evident in the fairly recent development of enforcement strategies. Punishment can effectively …

Relationship Between Mindfulness-Based Stress Reduction And Immune Function In Cancer And Hiv/Aids, Rachel L. Zeichner, Jeffery L. Kibler, Simon B. Zeichner

Faculty Articles

Objective: Chronic stress is widespread, and is detrimental to immune functioning and to overall physical and emotional health. These effects may be potentiated in patients with chronic illness, as high levels of chronic stress are common in this population. Numerous studies support the efficacy of mindfulness-based stress reduction (MBSR) in improving psychological functioning. If a strong relationship is found between MBSR and immune function, then MBSR may be implemented as a strategy to improve immune functioning and overall well-being.

Methods: In the present review paper, the relationship between MBSR and immune function is evaluated. Empirical studies measuring immune markers as …

The Thermoregulatory Theory Of Yawning: What We Know From Over Five Years Of Research, Andrew C. Gallup, Omar Tonsi Eldakar

Biology Faculty Articles

Over the past 5 years numerous reports have confirmed and replicated the specific brain cooling and thermal window predictions derived from the thermoregulatory theory of yawning, and no study has found evidence contrary to these findings. Here we review the comparative research supporting this model of yawning among homeotherms, while highlighting a recent report showing how the expression of contagious yawning in humans is altered by seasonal climate variation. The fact that yawning is constrained to a thermal window of ambient temperature provides unique and compelling support in favor of this theory. Heretofore, no existing alternative hypothesis of yawning can …