Biology Commons^™

Effects Of Reproductive Maturity On Neuroplasticity In Male Bumble Bees (Bombus Impatiens), Karlee Eck

Undergraduate Honors Capstone Projects

Within the span of an insect's lifetime, new synaptic connections between neurons are made in response to age and experience. This neuroplasticity leads to anatomical changes within individual brain regions that represent investment in different brain functions. The neuroplasticity of female bumble bees has been well studied, but almost nothing is known about how the male bee brain responds to life experiences. Due to the complex sensory requirements of mate finding and copulation for males, neuroplasticity is likely to be an important component of reproduction. These sensory requirements include olfactory and optic inputs, which are processed in the calyces of …

Evaluating The Potential Of Repurposing Commercially Available Drugs For The Treatment Of Viral Infections, Brennan Connor Mcewan

Undergraduate Honors Capstone Projects

Viral infections that are often overlooked as common seasonal illnesses such as influenza can rapidly become a public threat. They threaten society as new, more dangerous strains of these common viruses emerge and as strains develop resistance to current vaccines and antiviral treatments (Kochanek, Murphy, Xu, & Tejada-Vera, 2014). To combat this, the development of antiviral treatments with novel mechanisms of action is essential. Repurposing drugs instead of developing new drugs can save years of development time and hundreds of millions of dollars (DiMasi, Hansen, & Grabowski, 2003). To support the effort to discover drugs with unique mechanisms of action, …

Transcriptomic Analysis Of Honey Bees Exposed To Organosilicone, Matthew Brent Thompson

Undergraduate Honors Capstone Projects

Honey bees play an important role in agriculture and the decline of honey bee populations worldwide has generated concern. While the application of pesticides in agricultural settings is often implicated in the deterioration of honey bee population health, pesticide applications contain more than just pesticides; they also contain adjuvants that may have detrimental effects to bee health. One known effect of one type of adjuvant is the suppression of immunity-related genes and consequent increase of viral load in larvae. We investigate the effects of one class of adjuvant, organosilicone surfactants (OSS), on adult honey bee health. In a laboratory based …

The Diversity Of Terrestrial Mammals Surrounding Waterfall At Billy Barquedier National Park, Kelsey Johnson

Animal Science Undergraduate Honors Theses

Billy Barquedier is a National Park located in the Stann Creek district of Belize that contains Neotropical vegetation and wildlife. This study was performed in order to provide a baseline inventory and appearance frequency patterns of the terrestrial mammals located within Zone 1 of the park near a waterfall. The goal of the data and information collected during this study is to gain a greater understanding of the biodiversity and activity patterns of terrestrial mammals within the park and across Belize as a whole. The use of camera traps, small Sherman live traps, large live traps, and tracking methods were …

Pine, Aphids, And Parasitoid Wasps: Patterns Of Cospeciation And Host Switches In A Tri-Trophic System, Amber Bass

Electronic Theses and Dissertations

Ecological interactions may drive speciation events, and the processes that drive these speciation events can leave behind patterns in the phylogenies of interacting taxa. These patterns have been studied extensively in herbivores and host plants, as well as parasites and their hosts, but rarely in tri-trophic systems. Here, we examine three closely related groups of interacting taxa, including parasitoid wasps (Pauesia), aphid herbivores (Cinara), and pine trees (Pinus) to determine if the patterns between each interacting taxa indicate that cospeciation or host switches are more dominant. We create phylogenies of Cinara and Pauesia in the southeastern United States using ddRADseq …

Fusarium Euwallacea: A Serious Threat To The Native And Ornamental Trees And Shrubs In Southern California, Greg Tyler, Yixing Zheng, Michael Kulinich, Hagop Atamian

Student Scholar Symposium Abstracts and Posters

Fusarium Euwallacea is a fungus that has established symbiotic relationship with the beetle Euwallacea aff. fornicata. The beetle bores through the tree bark and into the sapwood making long tunnels inside the trees. The beetle carries the F. Euwallacea in a specialized structure on its body called mandibular mycangia and cultivates the fungus in the tunnels on which the beetle feeds to grow and reproduce. The growth of the fungus obstructs water and mineral transport in the plant xylem tissue, resulting in dieback, wilt and mortality of the host tree. Fungi are known to secrete proteins called effectors in …

Curcumin And Hispolon As Potential Antibacterial Agents, Haleigh Elizabeth Sullivan

Theses, Dissertations and Culminating Projects

Antibiotic resistant bacteria are becoming an increasing threat worldwide, particularly in the healthcare setting. This has led researchers and healthcare providers to begin looking elsewhere for solutions. Research suggests that curcumin, a phenolic compound from the spice turmeric, has antibacterial properties that may be able to treat potentially life-threatening hospital infections, such as those caused by Staphylococcus aureus and Pseudomonas aeruginosa. Turmeric has been used in Asian medicine for thousands of years as a general antimicrobial. Curcumin was utilized in this study, along with hispolon, another phenolic compound isolated from various mushrooms, such as Inonotus hispidus and Phellinus linteus, a …

Reproductive Success Increases With Age In American Kestrels (Falco Sparverius), Especially In Breeding Males, Emilie Rehm Luttman

Theses, Dissertations and Culminating Projects

Age-related differences in reproductive success have been well documented in many species of birds. The experience gained through successive breeding attempts can improve survival skills, foraging abilities, access to resources through social dominance, and familiarity with each stage of reproduction. In this study we examined 669 nesting attempts by American kestrels (Falco sparverius) from a population that bred in nest boxes in northwestern New Jersey, 1995 to 2018. We tested the hypothesis that older kestrels would have greater nesting success than those in their first reproductive attempt. Clutch size, hatching rate, and the number of chicks that survived to fledging …

Predicting Habitat Choice After Rapid Environmental Change, Philip H. Crowley, Pete C. Trimmer, Orr Spiegel, Sean M. Ehlman, William S. Cuello, Andrew Sih

Biology Faculty Publications

Decisions made while searching for settlement sites (e.g., nesting, oviposition) often have major fitness implications. Despite numerous case studies, we lack theory to explain why some species are thriving while others are making poor habitat choices after environmental change. We develop a model to predict (1) which kinds of environmental change have larger, negative effects on fitness, (2) how evolutionary history affects susceptibility to environmental change, and (3) how much lost fitness can be recovered via readjustment after environmental change. We model the common scenario where animals search an otherwise inhospitable matrix, encountering habitats of varying quality and settling when …

Zinc Toxicity And Iron-Sulfur Cluster Biogenesis In Escherichia Coli, Huangen Ding

Faculty Publications

While zinc is an essential trace metal in biology, excess zinc is toxic to organisms. Previous studies have shown that zinc toxicity is associated with disruption of the (4Fe-4S] clusters in various dehydratases in Escherichia coli. Here, we report that the intracellular zinc overload in E. coli cells inhibits iron-sulfur cluster biogenesis without affecting the preassembled iron-sulfur clusters in proteins. Among the housekeeping iron-sulfur cluster assembly proteins encoded by the gene cluster iscSUA-hscBA-fdx-iscX in E. coli cells, the scaffold IscU, the iron chaperone IscA, and ferredoxin have strong zinc binding activity in cells, suggesting that intracellular zinc overload inhibits iron-sulfur …

Screening For Neurotoxic Potential Of 15 Flame Retardants Using Freshwater Planarians, S. Zhang, Danielle Ireland, N. S. Sipes, M. Behl, Eva-Maria S. Collins

Biology Faculty Works

Asexual freshwater planarians are an attractive invertebrate model for high-throughput neurotoxicity screening, because they possess multiple quantifiable behaviors to assess distinct neuronal functions. Planarians uniquely allow direct comparisons between developing and adult animals to distinguish developmentally selective effects from general neurotoxicity. In this study, we used our automated planarian screening platform to compare the neurotoxicity of 15 flame retardants (FRs), consisting of representative phased-out brominated (BFRs) and replacement organophosphorus FRs (OPFRs). OPFRs have emerged as a proposed safer alternative to BFRs; however, limited information is available on their health effects. We found 11 of the 15 FRs (3/6 BFRs, 7/8 …

The Potential Synergistic Effect F Egcg-S And Antibiotics On The Eskape Bacteria Group, Summer Elsayed

Theses, Dissertations and Culminating Projects

The primary etiology of nosocomial infections derives from the following pathogenic ESKAPE organisms: Enterococcus faecium/faecalis, Staphyloccoccus aureus, Klebsiella pneumoniae, Acinetobacter baumanni, Pseudomonas aeruginosa and Enterobacter species. These opportunistic organisms are multidrug resistant and have the ability to form biofilm, which pose a great threat to clinical medicine. Evidence has shown catechins found in green tea (Camellia sinensis), have antibacterial activity. In this study, a modified polyphenolic catechin compound Epigallocatechin-3-gallate stearate (EGCG-S) was used to research its potential to inhibit ESKAPE growth and biofilm formation. In addition, synergistic ability of EGCG-S with antibiotics was also studied. Disk diffusion and colony forming …

Effects Of Astragaloside Iv On Gsk-3Β And S6k1 Phosphorylation In C2c12 Muscle Cells, Kyle James Tuohy

Theses, Dissertations and Culminating Projects

Saponins are a broad class of functionally diverse phytochemicals that have been shown to exhibit antihyperglycemic, antihyperlipidemic, anti-inflammatory, and anticancer effects. Through in vitro and in vivo experimentation, Astragaloside IV (AsIV) has been shown to regulate glycogen synthesis through protein kinase B (AKT)-mediated phosphorylation of glycogen synthase kinase 3-beta (GSK-3β). Along with control of glucose homeostasis, AKT activation is also an important regulator of protein synthesis via the downstream phosphorylation of mammalian target of rapamycin (mTOR) and ribosomal protein S6 kinase beta-1 (S6K1). Because AsIV can activate this pathway to stimulate glucose metabolism, it is possible that it can also …

Saturated Hydrocarbon Analysis Of Liberty State Park Soils, Matthew Chi-Hymn Cheung

Theses, Dissertations and Culminating Projects

Contaminated soils have been a concern in New Jersey since the Industrial Revolution (Gallagher, 2008). One site in particular has a variety of contaminants and is near the coast of Jersey City in Liberty State Park. Liberty State Park has been impacted by three significant changes. It was first a wetland in the 1600s, then became a New York dump site, and finally a railyard for the Central Railroad of New Jersey (Stanislaw, 2013). The whole land mass has mixed contaminants, including trace elements, heavy metals, organic wastes, and organic compounds. Currently, most of the state park has been dredged …

Relationships Of Protein Biomarkers Of The Urokinase Plasminogen Activator System With Expression Of Their Cognate Genes In Primary Breast Carcinomas., Seth B. Sereff

College of Arts & Sciences Senior Theses

Background: Urokinase plasminogen activator (uPA), its receptor uPAR and serine protease inhibitors PAI-1 or PAI-2 play key roles in tissue membrane remodeling and invasion of basement membranes by induction of a fibrinolytic pathway. Earlier studies reported that uPA and PAI-1 protein levels in breast carcinomas assist in prediction of response to chemotherapy. Our goal is to develop molecular signatures of candidate genes and identify novel relationships with these four protein biomarkers that demonstrate clinical utility for assessment of breast carcinoma outcomes.

Methods: This retrospective study used de-identified biomarker results and clinical outcomes from primary breast cancers that were stored in …

Molecular Determinants Of Ubqln2 Liquid-Liquid Phase Separation Modulated By Ubiquitin, Christine Habjan

Renée Crown University Honors Thesis Projects - All

Liquid-liquid phase separation (LLPS), the mechanism by which macromolecules demix to form a dense liquid- like phase in equilibrium with a phase dilute of molecules, is hypothesized to be the dominant mechanism governing membraneless organelle formation inside the cell. Stress granules, a type of membraneless organelle that assemble reversibly in response to cellular stress, may be formed through LLPS. Dysregulation of this process may lead to disease aggregates in vivo. LLPS is thought to be governed by the occurrence of weak, multivalent interactions between molecules such as proteins and RNA molecules. Multivalent interactions, the proposed driving force governing LLPS, are …

Regulation Of Olfactory Behavior By Rnai Pathways In Caenorhabditis Elegans, Emma Walen

Renée Crown University Honors Thesis Projects - All

Responding to environmental cues is extremely important for the survival of animals. One pathway that plays a relevant role in the detection and response to environmental cues is the olfaction pathway. Past research has shown that a form of gene regulation known as RNA interference (RNAi) is required in sensory neurons for the detection of unfavorable environmental cues. To further explore this, we hypothesized that RNAi is also required in sensory neurons for the detection of attractive cues. To test our prediction, we examined whether RNAi would be required in AWA and AWC sensory neurons for the detection of the …

Modeling Stutter And Pull-Up Using The Globalfiler Human Dna Amplification Kit In Forensic Dna Analysis, Angie Zhao

Renée Crown University Honors Thesis Projects - All

The processing offorensic DNA samplesfromextractiontointerpretation can introducenon-biological, process-related stutter and pull-up artifacts that cansignificantlycomplicateDNA profile interpretationbyappearing as biologically significant alleles.This project aims tomodel stutter and pull-up product formation to enable automated identification and removal ofnon-allelic influence from the profile. The results will provide more accurate and reliable meansof artifact identification and will also contribute to understanding the GlobalfilerHuman DNAAmplificationsystem(ThermoFisher Scientific), a relatively new amplification kit thatiscurrently undergoing widespread implementation. Stutter and pull-uparemodeledusingGlobalFiler-amplified human DNA data.Stutterismodeled using nonlinear regression and pull-upismodeled using symbolic regression via genetic programming, a form of artificialintelligence. Both leverage large datasets and computational methods to determine optimalmodels …

Investigation Of The Role Of Mecp2 In The Precise Laminar And Areal Development Of Neocortical Neurons In A Rett Syndrome Mouse Model, Camerin Ortiz

Renée Crown University Honors Thesis Projects - All

The severe neurodevelopmental disorder Rett syndrome (RTT) primarily affects girls. Girls with RTT seem to develop normally until 6-18 months when they undergo a period of a regression where they lose previously acquired functions. RTT is the second most leading cause of intellectual disability in girls. Symptoms commonly associated with RTT, include loss of speech and motor function as well as respiratory problems, distinct hand wringing, and autistic characteristics. RTT is caused by mutations in the X-linked gene methyl-CpG-binding protein 2 (Mecp2). Both RTT patients and Mecp2 deficient mouse models have decreased dendritic complexity and reduced soma size …

Modification Of Calmodulin Ef Hands For Rare Earth Metal Selectivity, Alaine Gigon

Renée Crown University Honors Thesis Projects - All

Positron Emission Tomography and Magnetic Resonance Imaging, two of the most clinically important imagining techniques, often rely on the ability to bind lanthanide ions with high affinity. Small, non-immunogenic metal-binding proteins with a high affinity for lanthanides have been highly sought out for such purposes due to low likelihood for immunogenicity, versatility, and ease of modification3 . However, despite much effort the problem of creating proteins for specific and selective binding of lanthanides a la carte has not been solved. Our approach is to engineer catalytic sites into existing metal-binding proteins to link metal binding to a straightforward spectroscopic readout. …

Human Anatomy And Physiology I: Course Map With Expected Learning Outcomes, Carlos Liachovitzky

Open Educational Resources

This document contains a list with all the Anatomy and Physiology I expected learning outcomes organized by topics, and grouped into ten units: 1. Introduction to A&P: body plan & organization; 2. Introduction to A&P: homeostasis; 3. The chemical level of organization; 4. Levels of organization: the cellular level of organization; 5. Levels of organization: the tissue level of organization; 6. Support and movement: integumentary system; 7. Support and movement: skeletal system & articulations; 8. Support and movement: muscular system; 9. Regulation, integration, and control: nervous system; 10. Regulation, integration, and control: special senses

Each learning outcome is referred to …

Evolution Of The Caribbean Species Of Columnea (Gesneriaceae) With An Emphasis On The Jamaican Species, James F. Smith, Maggie T.-Y. Ooi, Lacie J. Schulte, Keron C. St.E. Campbell, Judeen Meikle, John L. Clark

Biology Faculty Publications and Presentations

Premise of research. Biogeography has improved understanding of evolution and diversification of organisms on both continental and island systems. One complicated island group in terms of geological history and biogeographic pattern is the Caribbean island system. A comparison across taxonomic groups does not result in overarching patterns for this group of islands. Columnea has the greatest number of species endemic to the Caribbean for any genus in Gesneriaceae that is not mostly endemic to the Caribbean with 16 species. Thirteen of these species are found on Jamaica, the remaining three each endemic to Cuba, Hispaniola, and Puerto Rico. In …

Repression Of Germline Genes In Caenorhabditis Elegans Somatic Tissues By H3k9 Dimethylation Of Their Promoters, Andreas Rechtsteiner, Meghan Elizabeth Costello, Thea A. Egelhofer, Jocob M. Garrigues, Susan Strome, Lisa N. Petrella

Biological Sciences Faculty Research and Publications

Repression of germline-promoting genes in somatic cells is critical for somatic development and function. To study how germline genes are repressed in somatic tissues, we analyzed key histone modifications in three Caenorhabditis elegans synMuv B mutants, lin-15B, lin-35, and lin-37—all of which display ectopic expression of germline genes in the soma. LIN-35 and LIN-37 are members of the conserved DREAM complex. LIN-15B has been proposed to work with the DREAM complex but has not been shown biochemically to be a member of the complex. We found that, in wild-type worms, synMuv B target genes and germline genes …

Lianas Have A Seasonal Growth Advantage Over Co‐Occurring Trees, Stefan A. Schnitzer, Geertje M. F. Van Der Heijden

Biological Sciences Faculty Research and Publications

The seasonal growth advantage hypothesis posits that plant species that grow well during seasonal drought will increase in abundance in forests with increasing seasonality of rainfall both in absolute numbers and also relative to co‐occurring plant species that grow poorly during seasonal drought. That is, seasonal drought will give some plant species a growth advantage that they lack in aseasonal forests, thus allowing them attain higher abundance. For tropical forest plants, the seasonal growth advantage hypothesis may explain the distribution of drought‐adapted species across large‐scale gradients of rainfall and seasonality. We tested the seasonal growth advantage hypothesis with lianas and …

The Hydraulic Efficiency–Safety Trade‐Off Differs Between Lianas And Trees, Masha T. Van Der Sande, Lourens Poorter, Stefan A. Schnitzer, Bettina M.J. Engelbrecht, Lars Markesteijn

Biological Sciences Faculty Research and Publications

Hydraulic traits are important for woody plant functioning and distribution. Associations among hydraulic traits, other leaf and stem traits, and species’ performance are relatively well understood for trees, but remain poorly studied for lianas. We evaluated the coordination among hydraulic efficiency (i.e., maximum hydraulic conductivity), hydraulic safety (i.e., cavitation resistance), a suite of eight morphological and physiological traits, and species’ abundances for saplings of 24 liana species and 27 tree species in wet tropical forests in Panama. Trees showed a strong trade‐off between hydraulic efficiency and hydraulic safety, whereas efficiency and safety were decoupled in lianas. Hydraulic efficiency was strongly …

Integration Of Genotype, Physiological Performance, And Survival In A Lizard (Uta Stansburiana) With Alternative Mating Strategies, Lisa Hazard, Kenneth A. Nagy, Donald B. Miles, Erik I. Svensson, Daniel Costa, Barry Sinervo

Department of Biology Faculty Scholarship and Creative Works

Covariation among behavioral and physiological traits is thought to enhance reproductive success and Darwinian fitness. Species that exhibit alternative mating strategies provide excellent opportunities to assess the relative contributions of physiological and behavioral traits to fitness. Male side-blotched lizards (Uta stans-buriana) exhibit three heritable throat color morphs that are associated with alternative mating behaviors. The three morphs differ in resource holding potential, mate attraction, mate defense, and physiological performance. We examined interrelationships of body mass, stamina, field metabolic rate, growth rate, and survival to the second capture (a fitness proxy). Relationships among variables were complex, and mass, stamina, and throat …

Do Per-Capita Impact Or Abundance Dominate The Impact Of An Invader? Interactions Among Neighboring Species In Context-Dependent Competition, Haoyu Li

Electronic Theses and Dissertations

Evaluating relative species competitive strength is a central question in community ecology, with strong implications for invasion ecology. Models assessing invader success consider three components: distribution, abundance and per-capita impact. However, relative strength and interactions among these factors remain unclear when applying to specific invasion scenarios. We hypothesized that performance of native and non-native species will vary as a function of direct and indirect effects at different abundances and scales. We conducted a replacement experiment between two dominant grasses in subtropical grasslands (the native Axonopus fissifolius and the non-native Paspalum notatum) in central Florida, USA. Thirty fenced plots (1 m …

A Bug Eat Bug World : Does Urbanization Decrease Survivorship Of Pollinators., Amy L. Cherry

College of Arts & Sciences Senior Theses

Human impact on the environment is responsible for the sixth mass extinction on Earth as well as rapid population declines in many taxa. Land use change, via increasing urbanization and intensity of agricultural practices, is the most important aspect of human impact on the environment, and it is associated with population decline and extinction in several taxa, but especially in pollinator species. Pollinators, which are essential for crop production, are experiencing declines as a result of the loss of habitat and host plants associated with urbanization. Urbanization negatively affects pollinators, but in the wake of lost naturalized habitat, some researchers …

Indole Sensitivity In Various Insect Herbivores., Rakhi Patel

College of Arts & Sciences Senior Theses

When plants in nature are attacked by herbivores, they frequently release airborne volatiles. These herbivore-induced plant volatiles (HIPVs) help plants defend themselves against herbivore attack by calling in natural enemies, but HIPVs may also be directly toxic to herbivores. Indole (C₈H₇N) is a common HIPV that is toxic to caterpillars, but its relative toxicity to different caterpillars has not been explored. I tested the toxicity of indole on six caterpillar species (Spodoptera frugiperda, Trichoplusia ni, Spodoptera exigua, Anticarsia gemmatalis, Heliothis virescens, and Helicoverpa zea). Results show that indole is …

Pparγ And High Molecular Weight Adiponectin In White Adipose Tissue In An Obesity Model., Katelyn M. Mcdowell

College of Arts & Sciences Senior Theses

Adiponectin is a protein secreted from adipose (fat) tissue. It is secreted into the blood as either a trimer (low molecular weight), hexamer (middle molecular weight) or an 18-mer (high molecular weight). Adiponectin, particularly the high molecular weight (HMW) isoform, has been shown to increase insulin sensitivity, which is important for maintaining healthy blood glucose levels. Adiponectin levels have been shown to be decreased in individuals who are obese, and this may play a role in the diabetes which often accompanies obesity. PPARγ is a protein that is highly expressed in white adipose tissue and is responsible for regulating portions …