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2014

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Shades Of Grey: The Need For A Multi-Disciplinary Approach To Research Investigating Alcohol And Ageing, Celia Wilkinson, Julie Dare Jan 2014

Shades Of Grey: The Need For A Multi-Disciplinary Approach To Research Investigating Alcohol And Ageing, Celia Wilkinson, Julie Dare

Research outputs 2014 to 2021

This paper calls for an increase in multi-disciplinary research on the issue of alcohol and ageing, to ensure public health interventions reflect the complex and diverse needs of older drinkers. Older people (65+ years) represent a unique segment of the population; compared to adolescents and younger people, they are more likely to have a range of co-morbid conditions and be taking prescribed medication, and are more physiologically vulnerable to the effects of alcohol. This suggests that from a public health perspective, alcohol use by older people is problematic. However, as with younger people, alcohol use is closely associated with socialisation …

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Tego - A Framework For Adversarial Planning, Daniel Ashlock, Philip Hingston Jan 2014

Tego - A Framework For Adversarial Planning, Daniel Ashlock, Philip Hingston

Research outputs 2014 to 2021

This study establishes a framework called ∗-Tego for a situation in which two agents are each given a set of players for a competitive game. Each agent places their players in an order. Players on each side at the same position in the order play one another, with the agent's score being the sum of their player's scores. The planning agents are permitted to simultaneous reorder their players in each of several stages. The reordering is termed competitive replanning. The resulting framework is scalable by changing the number of players and the complexity of the replanning process. The framework is …

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Remote Beehive Monitoring Using Acoustic Signals, Amro Qandour, Iftekhar Ahmad, Daryoush Habibi, Mark Leppard Jan 2014

Remote Beehive Monitoring Using Acoustic Signals, Amro Qandour, Iftekhar Ahmad, Daryoush Habibi, Mark Leppard

Research outputs 2014 to 2021

Recent developments in Wireless Sensor Networks (WSNs) have led to their use in remote data acquisition and automatic data analysis applications, which have proven to be an invaluable tool in a diverse range of fields including biosecurity. Further indications have been found that honeybee health can be monitored and determined through the use of acoustic analysis. In this paper, we present a system that has the ability to remotely detect the presence of pest infestation on a colony of honeybees by comparing the acoustic fingerprint of a hive to a fingerprint of known status. This will aid the goals of …

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Regulation Of Human Pax6 Expression By Mir-7, M Needhamsen, Robert B. White, Keith M. Giles, Sarah A. Dunlop, Meghan G. Thomas Jan 2014

Regulation Of Human Pax6 Expression By Mir-7, M Needhamsen, Robert B. White, Keith M. Giles, Sarah A. Dunlop, Meghan G. Thomas

Research outputs 2014 to 2021

The paired box gene 6 (PAX6) is a powerful mediator of eye and brain organogenesis whose spatiotemporal expression is exquisitely controlled by multiple mechanisms, including post-transcriptional regulation by microRNAs (miRNAs). In the present study, we use bioinformatic predictions to identify three candidate microRNA-7 (miR-7) target sites in the human PAX6 3′ untranslated region (3′-UTR) and demonstrate that two of them are functionally active in a human cell line. Furthermore, transient transfection of cells with synthetic miR-7 inhibits PAX6 protein expression but does not alter levels of PAX6 mRNA, suggesting that miR-7 induces translational repression of PAX6. Finally, a comparison of …

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Setting Goals And Choosing Appropriate Reference Sites For Restoring Mine Pit Lakes As Aquatic Ecosystems: Case Study From South West Australia, Eddie J. Van Etten, C. D. Mccullough, Mark A. Lund Jan 2014

Setting Goals And Choosing Appropriate Reference Sites For Restoring Mine Pit Lakes As Aquatic Ecosystems: Case Study From South West Australia, Eddie J. Van Etten, C. D. Mccullough, Mark A. Lund

Research outputs 2014 to 2021

Pit lakes may form when open cut mining leaves a pit void behind that fills with ground and surface water. Often replacing terrestrial ecosystems that existed prior to mining, the pit lake may offer an alternative ecosystem with aquatic biodiversity values that can be realised through planned restoration. Restoration theory and mine closure regulatory requirements guides us toward restoring disturbed systems towards landscapes that are of regional value and relevance. However, how do we identify a restoration target for a novel aquatic habitat that did not exist prior to the new post-mining landscape? This paper presents a process of first …

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Overexpression Of Phospholipase A2 Group Iia In Esophageal Squamous Cell Carcinoma And Association With Cyclooxygenase-2 Expression, Yan Chun Zhai, Bin Dong, Wen Qiang Wei, Yan He, Xin Qing Li, Robert T. Cormier, Wei Wang, Fen Liu Jan 2014

Overexpression Of Phospholipase A2 Group Iia In Esophageal Squamous Cell Carcinoma And Association With Cyclooxygenase-2 Expression, Yan Chun Zhai, Bin Dong, Wen Qiang Wei, Yan He, Xin Qing Li, Robert T. Cormier, Wei Wang, Fen Liu

Research outputs 2014 to 2021

Background: Esophageal cancer is one of the most frequently occurring malignancies and the seventh leading cause of cancer-related deaths in the world. The esophageal squamous cell carcinoma (ESCC) is the most common histological type of esophageal cancer worldwide. Materials and Methods: Our goal in this study was to detect phospholipase A2 Group IIA (PLA2G2A) and cyclooxygenase-2 (COX-2) immuno-expression in ESCC in a high-risk population in China. Results: Positive expression of PLA2G2A protein was observed in 57.2% (166/290) of the cases, while COX-2 was found in 257 of 290 samples (88.6%), both PLA2G2A and COX-2 being expressed in 153 cases (52.8%), …

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Pax Genes: Regulators Of Lineage Specification And Progenitor Cell Maintenance, Judith A. Blake, Mel R. Ziman Jan 2014

Pax Genes: Regulators Of Lineage Specification And Progenitor Cell Maintenance, Judith A. Blake, Mel R. Ziman

Research outputs 2014 to 2021

Pax genes encode a family of transcription factors that orchestrate complex processes of lineage determination in the developing embryo. Their key role is to specify and maintain progenitor cells through use of complex molecular mechanisms such as alternate RNA splice forms and gene activation or inhibition in conjunction with protein co-factors. The significance of Pax genes in development is highlighted by abnormalities that arise from the expression of mutant Pax genes. Here, we review the molecular functions of Pax genes during development and detail the regulatory mechanisms by which they specify and maintain progenitor cells across various tissue lineages. We …

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Prevalence And Risk Factors For Cervical Neoplasia: A Cervical Cancer Screening Program In Beijing, Lixin Tao, Lili Han, Xia Li, Qi Gao, Lei Pan, Lijuan Wu, Yanxia Luo, Wei Wang, Zihe Zheng, Xiuhua Guo Jan 2014

Prevalence And Risk Factors For Cervical Neoplasia: A Cervical Cancer Screening Program In Beijing, Lixin Tao, Lili Han, Xia Li, Qi Gao, Lei Pan, Lijuan Wu, Yanxia Luo, Wei Wang, Zihe Zheng, Xiuhua Guo

Research outputs 2014 to 2021

Cervical cancer is the second most common cancer and cause of cancer-related death for women worldwide. The aims of this study were to investigate the prevalence of cervical neoplasia and examine factors associated with high-grade cervical squamous intraepithelial lesions (HSIL) among women taking part in a cervical cancer screening program in Beijing.

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Dystonia Type 6 Gene Product Thap1: Identification Of A 50 Kda Dna-Binding Species In Neuronal Nuclear Fractions, Maitane Ortiz-Virumbrales, Marta Ruiz, Eugene Hone, Georgia Dolios, Rong Wang, Andrika Morant, Jessica Kottwitz, Laurie J. Ozelius, Sam Gandy, Michelle Ehrlich Jan 2014

Dystonia Type 6 Gene Product Thap1: Identification Of A 50 Kda Dna-Binding Species In Neuronal Nuclear Fractions, Maitane Ortiz-Virumbrales, Marta Ruiz, Eugene Hone, Georgia Dolios, Rong Wang, Andrika Morant, Jessica Kottwitz, Laurie J. Ozelius, Sam Gandy, Michelle Ehrlich

Research outputs 2014 to 2021

Mutations in THAP1 result in dystonia type 6, with partial penetrance and variable phenotype. The goal of this study was to examine the nature and expression pattern of the protein product(s) of the Thap1 transcription factor (DYT6 gene) in mouse neurons, and to study the regional and developmental distribution, and subcellular localization of Thap1 protein. The goal was accomplished via overexpression and knock-down of Thap1 in the HEK293T cell line and in mouse striatal primary cultures and western blotting of embryonic Thap1-null tissue. The endogenous and transduced Thap1 isoforms were characterized using three different commercially available anti-Thap1 antibodies and validated …

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Urinary And Breast Milk Biomarkers To Assess Exposure Ro Naphthalene In Pregnant Women: An Investigation Of Personal And Indoor Air Sources, Amanda J. Wheeler, Nina A. Dobbin, Marie-Eve Heroux, Mandy Fisher, Liu Sun, Cheryl F. Khoury, Russ Hauser, Mark Walker, Tim Ramsay, Jean-Francois Bienvenu, Alain Leblanc, Eric Daigle, Eric Gaudreau, Patrick Belanger, Mark Feeley, Pierre Ayotte, Tye E Arbuckle Jan 2014

Urinary And Breast Milk Biomarkers To Assess Exposure Ro Naphthalene In Pregnant Women: An Investigation Of Personal And Indoor Air Sources, Amanda J. Wheeler, Nina A. Dobbin, Marie-Eve Heroux, Mandy Fisher, Liu Sun, Cheryl F. Khoury, Russ Hauser, Mark Walker, Tim Ramsay, Jean-Francois Bienvenu, Alain Leblanc, Eric Daigle, Eric Gaudreau, Patrick Belanger, Mark Feeley, Pierre Ayotte, Tye E Arbuckle

Research outputs 2014 to 2021

Naphthalene exposures for most non-occupationally exposed individuals occur primarily indoors at home. Residential indoor sources include pest control products (specifically moth balls), incomplete combustion such as cigarette smoke, woodstoves and cooking, some consumer and building products, and emissions from gasoline sources found in attached garages. The study aim was to assess naphthalene exposure in pregnant women from Canada, using air measurements and biomarkers of exposure.

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Factors Influencing Pacing In Triathlon, Sam Shi Xuan Wu, Jeremiah P. Peiffer, Jeanick Brisswalter, Kazunori Nosaka, Chris Abbiss Jan 2014

Factors Influencing Pacing In Triathlon, Sam Shi Xuan Wu, Jeremiah P. Peiffer, Jeanick Brisswalter, Kazunori Nosaka, Chris Abbiss

Research outputs 2014 to 2021

Triathlon is a multisport event consisting of sequential swim, cycle, and run disciplines performed over a variety of distances. This complex and unique sport requires athletes to appropriately distribute their speed or energy expenditure (ie, pacing) within each discipline as well as over the entire event. As with most physical activity, the regulation of pacing in triathlon may be influenced by a multitude of intrinsic and extrinsic factors. The majority of current research focuses mainly on the Olympic distance, whilst much less literature is available on other triathlon distances such as the sprint, half-Ironman, and Ironman distances. Furthermore, little is …

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Toward An Ethics Of Reciprocity: Ethnobotanical Knowledge And Medicinal Plants As Cancer Therapies, John C. Ryan Jan 2014

Toward An Ethics Of Reciprocity: Ethnobotanical Knowledge And Medicinal Plants As Cancer Therapies, John C. Ryan

Research outputs 2014 to 2021

This article develops a reciprocity ethics of the environment through a discussion of ethnobotanical medicines used in the treatment of cancer. The moral virtue of reciprocity, defined as the returning of good when good is received or anticipated, is central to the posthumanist rethinking of human relationships to the plant world. As herbal medicines are used progressively more around the globe and as plant diversity decreases as a result of habitat loss and climate change, an ethics of reciprocity should be a concern for environmental philosophers and conservationists. Aldo Leopold’s land ethic and J. Baird Callicott’s distinction between deontological and …

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Recent Developments In R.F. Magnetron Sputtered Thin Films For Ph Sensing Applications - An Overview, Devendra Maurya, Ali Sardarinejad, Kamal Alameh Jan 2014

Recent Developments In R.F. Magnetron Sputtered Thin Films For Ph Sensing Applications - An Overview, Devendra Maurya, Ali Sardarinejad, Kamal Alameh

Research outputs 2014 to 2021

pH sensors are widely used in chemical and biological applications. Metal oxides-based pH sensors have many attractive features including insolubility, stability, mechanical strength, electrocatalyst and manufacturing technology. Various metal oxide thin films prepared by radio frequency (R.F.) magnetron sputtering have attractive features, including high pH sensitivity, fast response, high resolution, good stability and reversibility as well as potential for measuring pH under conditions that are not favourable for the commonly used glass electrodes-based pH sensors. In addition, thin film pH sensors prepared by R.F. magnetron sputtering offer many advantages, such as ease of packaging, low cost through the use of …

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Decreased Serum Zinc Is An Effect Of Ageing And Not Alzheimer's Disease, Alan Rembach, Dominic Hare, James Doecke, Samantha Burnham, Irene Volitakis, Christopher Fowler, Robert Cherny, Catriona Mclean, Rudolf Grimm, Ralph N. Martins, David Ames, Colin Masters, Ashley Bush, Blaine Roberts Jan 2014

Decreased Serum Zinc Is An Effect Of Ageing And Not Alzheimer's Disease, Alan Rembach, Dominic Hare, James Doecke, Samantha Burnham, Irene Volitakis, Christopher Fowler, Robert Cherny, Catriona Mclean, Rudolf Grimm, Ralph N. Martins, David Ames, Colin Masters, Ashley Bush, Blaine Roberts

Research outputs 2014 to 2021

We examined the distribution of zinc in the periphery (erythrocytes and serum) in a large, well-characterised cohort, the Australian Imaging, Biomarkers and Lifestyle (AIBL) study, in order to determine if there is systemic perturbation in zinc homeostasis in Alzheimer’s disease (AD). We observed an age dependent decrease in serum zinc of approximately 0.4% per year. When correcting for the age dependent decline in serum zinc no significant difference between healthy controls (HC), mildly cognitively impaired (MCI) or AD subjects was observed.

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Template-Based C8-Scorpion: A Protein 8 State Secondary Structure Prediction Method Using Structural Information And Context-Based Features, Ashraf Yaseen, Yaohang Li Jan 2014

Template-Based C8-Scorpion: A Protein 8 State Secondary Structure Prediction Method Using Structural Information And Context-Based Features, Ashraf Yaseen, Yaohang Li

Computer Science Faculty Publications

Background: Secondary structures prediction of proteins is important to many protein structure modeling applications. Correct prediction of secondary structures can significantly reduce the degrees of freedom in protein tertiary structure modeling and therefore reduces the difficulty of obtaining high resolution 3D models.

Methods: In this work, we investigate a template-based approach to enhance 8-state secondary structure prediction accuracy. We construct structural templates from known protein structures with certain sequence similarity. The structural templates are then incorporated as features with sequence and evolutionary information to train two-stage neural networks. In case of structural templates absence, heuristic structural information is incorporated instead. …

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Automated Identification Of Cell Type Specific Genes In The Mouse Brain By Image Computing Of Expression Patterns, Rongjian Li, Wenlu Zhang, Shuiwang Ji Jan 2014

Automated Identification Of Cell Type Specific Genes In The Mouse Brain By Image Computing Of Expression Patterns, Rongjian Li, Wenlu Zhang, Shuiwang Ji

Computer Science Faculty Publications

Background: Differential gene expression patterns in cells of the mammalian brain result in the morphological, connectional, and functional diversity of cells. A wide variety of studies have shown that certain genes are expressed only in specific cell-types. Analysis of cell-type-specific gene expression patterns can provide insights into the relationship between genes, connectivity, brain regions, and cell-types. However, automated methods for identifying cell-type-specific genes are lacking to date.

Results: Here, we describe a set of computational methods for identifying cell-type-specific genes in the mouse brain by automated image computing of in situ hybridization (ISH) expression patterns. We applied invariant image feature …

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Tracing Beta Strands Using Strandtwister From Cryo-Em Density Maps At Medium Resolutions, Dong Si, Jing He Jan 2014

Tracing Beta Strands Using Strandtwister From Cryo-Em Density Maps At Medium Resolutions, Dong Si, Jing He

Computer Science Faculty Publications

Major secondary structure elements such as α helices and β sheets can be computationally detected from cryoelectron microscopy (cryo-EM) density maps with medium resolutions of 5–10 A˚ . However, a critical piece of information for modeling atomic structures is missing, because there are no tools to detect β strands from cryo-EM maps at medium resolutions. We propose a method, StrandTwister, to detect the traces of β strands through the analysis of twist, an intrinsic nature of a β sheet. StrandTwister has been tested using 100 β sheets simulated at 10 A˚ resolution and 39 β sheets computationally detected from cryo-EM …

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Theoretical And Experimental Investigations To Improve The Performance Of Surface Acoustic Wave (Saw) Biosensors, Mandek Richardson Jan 2014

Theoretical And Experimental Investigations To Improve The Performance Of Surface Acoustic Wave (Saw) Biosensors, Mandek Richardson

USF Tampa Graduate Theses and Dissertations

The objective of this dissertation is to improve the performance of surface acoustic wave (SAW) biosensors for use in point-of-care-testing (POCT) applications. SAW biosensors have the ability to perform fast, accurate detection of an analyte in real time without the use of labels. However, the technology suffers from the inability to differentiate between specific and non-specific binding. Due to this limitation, direct testing of bodily fluids using SAW sensors to accurately determine an analyte's concentration is difficult. In addition, these sensors are challenged by the need to detect small concentrations of a biomarker that are typically required to give a …

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(Dis)Abled Gaming: An Autoethnographic Analysis Of Decreasing Accessibility For Disabled Gamers, Kyle David Romano Jan 2014

(Dis)Abled Gaming: An Autoethnographic Analysis Of Decreasing Accessibility For Disabled Gamers, Kyle David Romano

USF Tampa Graduate Theses and Dissertations

Within the context of culture, disability has long existed as a stigmatizing quality (Goffman, 1963). As a result, people with disabilities are often overlooked or completely omitted from various, cultural artifacts. This exclusion of people with disabilities is largely recognized as unproblematic because their disabilities imply an inevitable failing. Through my own experiences as a disabled gamer, I have recognized that video games have also framed gamers with disabilities as problematic. Video games are largely constructed in a one-size-fits-all mentality (Grammenos, 2014), where very specific people, with very specific kinds of bodies, are granted access to play them. Since disabled …

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Cytosolic Carboxypeptidase 5 And Cilia Development In Zebrafish, Philip E. Giddings Iv Jan 2014

Cytosolic Carboxypeptidase 5 And Cilia Development In Zebrafish, Philip E. Giddings Iv

Honors Theses

My research project is focused around a specific gene - cytosolic carboxypeptidase 5 (CCP5). Previous research suggests that the CCP5 gene is essential for the modification of alpha-tubulin which is necessary for normal growth of cilia in the olfactory pit of zebrafish. Using a CCP5-MO to knockdown the gene I was able to compare the resulting phenotype to that of a control specimen in order to determine any visible differences with respect to cilia morphology. Through analysis by scanning electron miscroscopy I wasw able to that cilia morphology did appear to be effected by the knockdown of CCP5. However, similar …

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The Role Of Sabbath-Keeping, Christian Internalization, Need Satisfaction, And Parental Environment In Well-Being, Paola S. Caceres Jan 2014

The Role Of Sabbath-Keeping, Christian Internalization, Need Satisfaction, And Parental Environment In Well-Being, Paola S. Caceres

Honors Theses

Identifying which specific religious practices promote religious internalization is crucial in understanding the relationship between practice and well-being. The current study employs surveys along with an episodic memory recall task to examine whether the relationship between Sabbath-keeping internalization and well-being is mediated by Christian religious internalization, parental environment, and basic need satisfaction as outlined in Self-Determination Theory. Our mediation analysis results demonstrate a large mediation effect size for daily basic needs satisfaction (autonomy, competence, and autonomy) on the relationship between internalization of Sabbath-keeping and well-being. Small to medium effect sizes were found for a general measure of Christian internalization and …

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The Dispersal Of Phytoplankton Populations By Enhanced Turbulent Mixing In A Shallow Coastal Sea, Jaimie Cross, W. Alex M. Nimmo-Smith, Philip J. Hosegood, Ricardo Torres Jan 2014

The Dispersal Of Phytoplankton Populations By Enhanced Turbulent Mixing In A Shallow Coastal Sea, Jaimie Cross, W. Alex M. Nimmo-Smith, Philip J. Hosegood, Ricardo Torres

School of Biological and Marine Sciences

A single tidal cycle survey in a Lagrangian reference frame was conducted in autumn 2010 to evaluate the impact of short-term, episodic and enhanced turbulent mixing on large chain-forming phytoplankton. Observations of turbulence using a free-falling microstructure profiler were undertaken, along with near-simultaneous profiles with an in-line digital holographic camera at station L4 (50° 15' N 4° 13' W, depth 50 m) in theWestern English Channel. Profiles fromeach instrumentwere collected hourly whilst following a drogued drifter. Results from an ADCP attached to the drifter showed pronounced vertical shear, indicating that the water column structure consisted of two layers, restricting interpretation …

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A Note On The Krone Deposition Equation And Significance Of Floc Aggregation, Aj Mehta, Aj Manning, Yp Khare Jan 2014

A Note On The Krone Deposition Equation And Significance Of Floc Aggregation, Aj Mehta, Aj Manning, Yp Khare

School of Biological and Marine Sciences

No abstract provided.

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The Effects Of "Stress Inoculation" On Anxiety-Related Behaviors In A Rodent Model, Rebecca Ruth Clouse Jan 2014

The Effects Of "Stress Inoculation" On Anxiety-Related Behaviors In A Rodent Model, Rebecca Ruth Clouse

Master's Theses

Problem. Humans may face psychological stressors in their everyday life due to their ability to contemplate future events. While long-term stress exposure may be detrimental to health, this study examines the possibility that exposure to unpredictable/controllable, moderate stress may cause resilience against future stressors. This is referred to as the "stress inoculation hypothesis." The effects of unpredictable/controllable stress can be illustrated as a rightward shift in an inverted U-shaped curve, where optimal performance (the top of the curve) can be maintained at higher stress levels. -- Method. Thirty-three male Sprague-Dawley rats were tested on the elevated-plus maze (EPM) for trait …

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What's In A Name? What Have Taxonomy And Systematics Ever Done For Us?, David T. Bilton Jan 2014

What's In A Name? What Have Taxonomy And Systematics Ever Done For Us?, David T. Bilton

School of Biological and Marine Sciences

There is increasingly little doubt that we are in the midst of an anthropogenically driven extinction event which may end up rivalling the mass extinctions of the geological past (Barnosky et al., 2011). Increasingly the world’s natural and seminatural habitats are being irreversibly transformed by human populations, meaning that much of global biodiversity is under threat (see Caro et al., 2011 on remaining intact ecosystems). Given this “biodiversity crisis” and the fact that biodiversity is ultimately essential to human survival on this planet (e.g. Juniper, 2013) one might expect that the basic science underpinning the study of biodiversity would be …

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The Antibacterial Effects Of Silver, Titanium Dioxide And Silica Dioxide Nanoparticles Compared To The Dental Disinfectant Chlorhexidine On Streptococcus Mutans Using A Suite Of Bioassays., Alexandros Besinis, Peralta T De, Richard D. Handy Jan 2014

The Antibacterial Effects Of Silver, Titanium Dioxide And Silica Dioxide Nanoparticles Compared To The Dental Disinfectant Chlorhexidine On Streptococcus Mutans Using A Suite Of Bioassays., Alexandros Besinis, Peralta T De, Richard D. Handy

School of Engineering, Computing and Mathematics

Metal-containing nanomaterials have the potential to be used in dentistry for infection control, but little is known about their antibacterial properties. This study investigated the toxicity of silver (Ag), titanium dioxide and silica nanoparticles (NPs) against the oral pathogenic species of Streptococcus mutans, compared to the routine disinfectant, chlorhexidine. The bacteria were assessed using the minimum inhibitory concentration assay for growth, fluorescent staining for live/dead cells, and measurements of lactate. All the assays showed that Ag NPs had the strongest antibacterial activity of the NPs tested, with bacterial growth also being 25-fold lower than that in chlorhexidine. The survival rate …

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Feeding Interactions Between Juvenile And Adult Flightless Cormorants., James Hayward, Libby C. Megna, Brianna G. Payne Jan 2014

Feeding Interactions Between Juvenile And Adult Flightless Cormorants., James Hayward, Libby C. Megna, Brianna G. Payne

Faculty Publications

We report observations on chick feedings by adult Flightless Cormorants Phalacrocorax harrisi, indicating that, contrary to the literature, the sequence of interaction is similar to that of other Pelecaniformes.

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Egg Cannibalism In A Gull Colony Increases With Sea Surface Temperature, Lynelle M. Weldon, Shandelle M. Henson, James Hayward, Brianna G. Payne, Libby C. Megna, Andre E. Moncrieff Jan 2014

Egg Cannibalism In A Gull Colony Increases With Sea Surface Temperature, Lynelle M. Weldon, Shandelle M. Henson, James Hayward, Brianna G. Payne, Libby C. Megna, Andre E. Moncrieff

Faculty Publications

Cannibalism occurs regularly across a broad range of taxa with a variety of ecological and evolutionary consequences. Rises in sea surface temperature (SST) have been linked to increased cannibalism in some species, including polar bears (Ursus maritimus), Peruvian anchovy (Engraulis ringens), and Peruvian hake (Merluccius gayi peruanus), and might be expected in birds that depend on marine food webs for sustenance. Increased SSTs are associated with lowered ocean thermoclines and weakened upwellings. These changes, in turn, lead to decreased productivity in surface water and movement of surviving forage fish to deeper water, thereby food-stressing surface feeders such as gulls, diminishing …

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Effects Of Plastic Pollution Density On The Crawling Rates Of Hawksbill Hatchlings In Utila, Honduras, Kyungje Sung Jan 2014

Effects Of Plastic Pollution Density On The Crawling Rates Of Hawksbill Hatchlings In Utila, Honduras, Kyungje Sung

Honors Theses

The hawksbill turtle (Eretmochelys imbricata) is a critically endangered species. Hence, various conservation efforts by groups such as ProTECTOR are taking place to stabilize its population. To support such efforts, my study focused on the turtle population in and around the island of Utila, Honduras. Specifically, I sought to determine if various densities of plastic pollution had an effect on crawling times during the migration of hawksbill turtle hatchlings from nest to water. A reduction in crawling time could increase predation time and cause the hatchling to expend additional energy before they reach the ocean. We constructed four experimental corridors …

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Hcnabc Operon Transcription Of Pseudomonas Putida Under Varying Iron And Oxygen Concentrations And Culture Age, Christine Lee Jan 2014

Hcnabc Operon Transcription Of Pseudomonas Putida Under Varying Iron And Oxygen Concentrations And Culture Age, Christine Lee

Honors Theses

The species Pseudomonas putida produces hydrogen cyanide (HCN) through the transcription of the hcnABC operon. Previous research by Myrna Biswas (2010) demonstrated that microaerobic +FeCl3 cultures had the greatest HCN production, but the effects of varying iron and oxygen levels on HCN production were unclear. Isaac Kim (2011) assessed HCN production of P. putida in sand versus soil using different iron concentrations and found that iron was necessary for HCN production. The purpose of this experiment was to determine how the hcnABC operon is affected by varying levels of iron and oxygen, and the age of bacteria culture. To test …

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