Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Although years of research have established that attachment representations are not </p><p>consistently transmitted from parent to child (also known as the transmission gap), the </p><p>reasons for this gap remain relatively unknown. This transmission gap exists between </p><p>parents and peers as well. The purpose of this thesis was to examine the… more Full Text: WHO CARES? EXAMINING ASSOCIATIONS BETWEEN CAREGIVING SENSITIVITY AND PARENT-PEER ATTACHMENT A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the Faculty of Arts and …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Introgressive hybridization between northern (Glaucomys sabrinus) and southern flying squirrels (G. volans) has been observed in some areas of Canada and the USA. However, existing molecular markers lack the resolution to discriminate late-generation introgressants and describe the extent to which hybridization influences the Glaucomys gene pool. I report the first North American flying… more Full Text: De novo transcriptome assembly, functional annotation, and SNP discovery in North American flying squirrels (genus Glaucomys) A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Media has had a significant influence on how individuals living with and at risk of Human Immunodeficiency Virus (HIV) care for their health. This research builds on previous research to explore the link between HIV related media messaging and HIV related health behaviours using a mixed methods approach. To investigate the access to and perceptions of HIV related media, a sample of 129… more Full Text: ROLE OF MEDIA IN SHAPING PERCEPTIONS OF HIV AND AFFECTING ENGAGEMENT IN HIV CARE A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the Faculty of Arts and Science …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Environmental DNA (eDNA) metabarcoding targets sequences with interspecific</p><p>variation that can be amplified using universal primers allowing simultaneous detection</p><p>of multiple species from environmental samples. I developed novel primers for three</p><p>barcodes commonly used to identify plant species, and compared amplification success… more Full Text: Using environmental DNA (eDNA) metabarcoding to assess aquatic plant communities A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the Faculty of Arts and Science …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Neuroblastoma (NB) has one of the highest mortality rates in pediatric oncology due to relapsed and refractory disease. Current aggressive multi-modal treatments are inhibited by dose-limiting toxicities and are associated with late-effects and secondary malignancies, emphasizing the necessity for novel therapeutics. Uniquely, most NB cells highly express disialoganglioside (GD2) a cell… more Full Text: Evaluation of silver nanoparticles (AgNPs) and anti-GD2AgNP antibody-drug conjugates as novel neuroblastoma therapies A thesis submitted to the Committee of Graduate Studies in Partial Fulfillment of the requirements for the Degree of Master of Science in …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Soluble uranium (U) has been observed continuously in the porewaters of Bentley Lake,</p><p>a lake with semi-permanent anoxic sediments, despite the fact that reduced U(IV) is known to be</p><p>insoluble. To be able to predict the fate and mobility of U that has been deposited in lake</p><p>sediments, it is very important to understand the factors that… more Full Text: CHANGES IN FORMS OF URANIUM IN ANOXIC LAKE SEDIMENTS AND POREWATERS NEAR AN ABANDONED URANIUM MINE, BANCROFT, ONTARIO A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Chemical presumptive tests are used as the primary detection method for latent bloodstain evidence. This work focuses on developing a forensic blood substitute which mimics whole blood reactivity to a luminol solution commonly used in presumptive testing. Designing safe and accessible materials that mimic relevant properties of blood is a recognized research need in forensic science.… more Full Text: Research and development of synthetic materials for presumptive testing in bloodstain pattern analysis: a luminol-reactive forensic blood substitute A thesis submitted to the committee of Graduate Studies in partial fulfillment of the requirements for the …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Numerous prey taxa employ defensive postures for protection against attack by predators. Defensive postures mitigate predation risk at various stages of the predator-prey sequence, including through crypsis, mimicry, thanatosis, aposematism, and deflection. In terrestrial salamanders, defensive postures may be aposematic, or deflect attacks away from vital body parts and towards the tail… more Full Text: ENDURING ATTACK: DEFENSIVE POSTURE IN TERRESTRIAL SALAMANDERS (GENUS: AMBYSTOMA) AND THEIR PREDATOR-PREY INTERACTIONS ON PELEE ISLAND, CANADA A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>I assessed how organisms having multiple biotic attributes may have conflicting niche determinants, and whether the realized niche reflects single or multiple attributes. All-female salamanders engage in two biotic states: hybridism and reproductive parasitism. Hybrids should occupy areas transitional to those used by parental species, whereas parasites that engage in competition with… more Full Text: Complex niche determinants in terrestrial salamanders: Does hybridism or reproductive parasitism explain large-scale patterns of distribution? A thesis submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirement for the Degree …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Salamanders are capable of tissue regeneration throughout all life-stages, which requires the dedifferentiation of mature cells to regrow lost tissues. Dedifferentiation is promoted by degradation of the extracellular matrix by matrix metalloproteases, as well as lysosomal degradation of intracellular and cell-surface proteins that mark cells as part of a mature lineage. Salamanders are… more Full Text: CORTICOSTERONE PROMOTES DEVELOPMENT OF CANNIBALISTIC MORPHOLOGY AND INHIBITS TISSUE REGENERATION IN AXOLOTLS (AMBYSTOMA MEXICANUM) A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfilment of the Requirements for the Degree of Master …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Samkari, Bshayer A, Thesis advisor (ths): Beresford, David, Degree committee member (dgc): Hutchinson, Tom, Degree committee member (dgc): Sager, Eric, Degree committee member (dgc): Davy, Christina, Degree granting institution (dgg): Trent University Abstract: <p>This thesis looks at the genus Pollenia: historically where they were first introduced into Canada and spatially, where they are found now. This project involved me identifying 2211 files, sorted from the 3 years of field specimens obtained in 2011, 2012, 2013. P. pediculata was the most abundant and widespread, yielding 1272 specimens out of 2211, and it was found in all provinces… more Full Text: DISTRIBUTION OF CLUSTER FLY SPECIES (POLLENIA SPP, DIPTERA: CALLIPHORIDAE) ACROSS CANADA INCLUDING RANGE EXTENSIONS AND FIRST PROVINCIAL RECORDS A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Cytokinins (CKs) are hormones that promote cell division. During the formation of tumors in the Ustilago maydis-Zea mays pathosystem, the levels of CKs are elevated. Although CK levels are increased, the origins of these CKs have not been determined and it is unclear as to whether they promote the formation of tumors. To determine this, we measured the CK levels, identified CK… more Full Text: CYTOKININ BIOSYNTHESIS, SIGNALING AND TRANSLOCATION DURING THE FORMATION OF TUMORS IN THE Ustilago maydis- Zea mays PATHOSYSTEM A thesis submitted to the Committee of Graduate Studies in partial fulfillment of the requirements for the degree of Master of …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Increases in flooding due to anthropogenic influences such as climate change and reservoir creation will undoubtedly impact aquatic ecosystems, affecting physical, chemical, and biological processes. We used two approaches to study these impacts: a whole-ecosystem reservoir flooding experiment and a systematic literature review. In the whole-ecosystem experiment, we analyzed the impact… more Full Text: EFFECTS OF FLOODING ON NUTRIENT BUDGETS AND ECOSYSTEM SERVICES A Thesis to the Committee of Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the Faculty of Arts and Science TRENT UNIVERSITY Peterborough, …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Leaf litter decomposition represents a major pathway for nutrient cycling and carbon flow in aquatic ecosystems, and macroinvertebrates play an important role in the processing of this material. To assess the causes of variable leaf breakdown and nutrient fluxes, I measured decomposition rates and the nutrient release ratios of decomposing leaf material across a broad latitudinal… more Full Text: AQUATIC INVERTEBRATE STUDIES FROM TWO PERSPECTIVES: FUNCTION (SHREDDERS) AND DISTRIBUTION (DYTISCIDAE) A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the Faculty of …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Although a wealth of research supports nature's beneficial effects on well-being, a lack of attentiveness and appreciation for nature may prevent people from fully experiencing nature's benefits. A mindfulness-based nature intervention was tested across two studies to investigate whether gratitude and mindfulness can boost nature's effects for well-being. Students… more Full Text: GRATITUDE IS IN OUR NATURE: HOW MINDFUL APPRECIATION OF NATURE AFFECTS WELL-BEING A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the Faculty of Arts and Science …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>This study seeks to clarify the way in which the differing canopy characteristics among tree species influence the partitioning of precipitation, and therefore the source of water available for plant water uptake, in the Plastic Lake catchment near Dorset, ON. Three dominant tree species were compared: red oak (Quercus rubra), eastern white pine (Pinus strobus), and eastern hemlock (… more Full Text: THE INFLUENCE OF CANOPY WATER PARTITIONING ON THE ISOTOPIC SIGNATURE OF PLANT WATER IN A MIXED NORTHERN FOREST A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>According to the Invasional Meltdown Hypothesis (IMH), invasive species may interact in their introduced range and facilitate future invasions. This study investigated the possibility that Alliaria petiolata, an invasive allelopathic herbaceous plant in Ontario, is facilitating invasions by additional alien species. Two allelopathic focal species were chosen for this study: the native… more Full Text: Tests of the Invasional Meltdown Hypothesis in invasive herbaceous plant species in southern Ontario A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the Faculty of …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Ustilago maydis is a biotrophic fungal plant pathogen that causes 'common smut of corn' disease. During infection, U. maydis develops a metabolic dependency on its host, relying on uptake of the carbon molecules provided within Zea mays tissues. The research presented indicated a requirement for metabolism of the pentose sugar D-xylose through functional investigation of a U.… more Full Text: FUNCTIONAL INVESTIGATION OF A Ustilago maydis XYLOSE METABOLISM GENE AND ITS ANTISENSE TRANSCRIPTS A thesis submitted to the Committee of Graduate Studies in partial fulfillment of the requirements for the degree of Master of Science in the faculty of …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>North American freshwater fishes are declining rapidly due to habitat fragmentation, degradation, and loss. In some cases, translocations can be used to reverse local extirpations by releasing species in suitable habitats that are no longer naturally accessible. Lake sturgeon (Acipenser fulvescens) experienced historical overharvest across their distribution, leading to endangered… more Full Text: Assessment of an adult lake sturgeon translocation (Acipenser fulvescens) reintroduction effort in a fragmented river system A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of …
Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Drivers of North American Barn Swallow population declines are not well understood, but foraging habitat loss is thought to be a contributing factor. Determining patterns of habitat use is challenging for swallows because they move rapidly but are too small to carry GPS tags. We showed that automated radio-telemetry could be used to track the movements of swallows with enough accuracy (… more Full Text: Using automated radio-telemetry to link food availability, reproductive success, and habitat use of Barn Swallows (Hirundo rustica erythrogaster) A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the …
