Browsing Biology by Title
Now showing items 267-286 of 597
-
Gaits and Their Development in the Infraorder Pecora
(University of Waterloo, 1967-02)The gaits of twenty-eight species of the Infraorder Pecora are analyzed from motion picture sequences comprising over 45,000 frames. For each gait the percentage time spent on the various supporting legs during each stride ... -
Generational Effects of Bisphenol A on Growth and Stress Performance in Rainbow Trout
(University of Waterloo, 2014-06-25)The aquatic environment is severely impacted by xenobiotics that are released due to anthropogenic activities, threatening ecosystem health. Some of these contaminants accumulate in lipophilic fish tissues and are maternally ... -
The Genetic Analysis of Autophagy-Dependent Caspase Activation in Drosophila melanogaster
(University of Waterloo, 2009-10-23)During Drosophila melanogaster pupation, groups of undifferentiated adult cells proliferate and undergo regulated cell shape changes, while larval tissues are eliminated by programmed cell death (PCD). PCD is most commonly ... -
Genome analysis reveals unexpected absence of oxygen metabolic capacity in helminths
(University of Waterloo, 2022-07-06)Oxygen metabolism in parasitic helminths differs significantly from that of most aerobic eukaryotes, as these organisms must be able to switch between aerobic and anaerobic metabolisms depending on their life-cycle stage. ... -
A genomic study of the invasive red alga Bangia atropurpurea (Mertens ex Roth) C. Agardh
(University of Waterloo, 2022-04-13)The phylum Rhodophyta comprises the red algae, which are morphologically diverse organisms present in marine and freshwater environments. The red algae order, Bangiales, is an ancient lineage and molecular studies have ... -
The genus Solidago L. (Astereae, Asteraceae) in South America and related taxa in North America
(University of Waterloo, 2009-05-14)The goldenrod genus Solidago L. is one of the larger genera in the flowering plant family Asteraceae. The genus is primarily North American and was recently revised in Flora of North America. In contrast, Solidago in South ... -
Gibberellin Biosynthesis in Bradyrhizobium japonicum USDA110
(University of Waterloo, 2014-10-28)Biosynthesis of gibberellin (GA) by bacteria has been studied for nearly 50 years. Early on, bacterial culture extracts were analyzed for the presence of bioactive compounds, thought to be gibberellins. In the 1980s, ... -
Gold nanoparticles as dehydrogenase mimicking nanozymes for estradiol degradation
(Elsevier, 2019-09)Nanozyme catalysis has been mainly focused on a few chromogenic and fluorogenic substrates, while environmentally and biologically important compounds need to be tested to advance the field. In this work, we studied oxidation ... -
Growth and regulatory metabolism of cellulose-utilizing thermophilic Caldicellulosiruptor species
(University of Waterloo, 2015-05-19)Hydrogen biofuels have been proposed as an environmentally-friendly and renewable energy substitute for petroleum-based fossil fuels. One species of bacteria capable of degrading cellulosic materials and producing vast ... -
Growth of rainbow darter (Etheostoma caeruleum) in the Grand River watershed
(University of Waterloo, 2020-11-27)Assessment of growth is an important tool in fisheries assessment and management and provides valuable insight into biological responses to stressors in biomonitoring programs. A small-bodied fish species, rainbow darter ... -
Habitat use of young-of-year Arctic Grayling (Thymallus arcticus) in Barrenland streams of central Nunavut, Canada
(University of Waterloo, 2020-06-01)Arctic Grayling, a species within the family Salmonidae that is valued by sport fishers and Indigenous communities, is distributed throughout a diversity of northern landscapes. While Arctic Grayling are known to be sensitive ... -
Heat Shock Response Inhibition and Gene Expression in <em>Xenopus Laevis</em> Cultured Cells
(University of Waterloo, 2006)Various genes have evolved to protect the cell against stressor-induced damage or death including the heat shock proteins (HSPs). Stressor-induced HSP gene expression involves the activation of heat shock factor (HSF), ... -
Hepatic Proteome Analysis of Fathead Minnow (Pimephales promelas) Exposed to Municipal Wastewater in the Bow River
(University of Waterloo, 2019-09-27)Large quantities of contaminants enter Canadian waterways through municipal wastewater effluent (MWWE) each year. MWWE exposure can have a myriad of effects on aquatic organisms, including inducing chronic stress response ... -
Hepatic Steatosis and TNF-α Signaling
(University of Waterloo, 2007-04-24)The overall objective of this research was to investigate the status of tumor necrosis factor-α (TNF-α), and molecules associated with its signaling, in the pathological state of hepatic steatosis. The effect of NSAID ... -
Heterothermy, body size, and locomotion as ecological predictors of migration in mammals
(Wiley, 2022-01)Migration is ubiquitous among animals and has evolved repeatedly and independently. Comparative studies of the evolutionary origins of migration in birds are widespread, but are lacking in mammals. Mammalian species have ... -
High Throughput Sequencing of MicroRNA in Rainbow Trout Plasma, Mucus, and Surrounding Water Following Acute Stress
(Frontiers, 2021-01-13)Circulating plasma microRNAs (miRNAs) are well established as biomarkers of several diseases in humans and have recently been used as indicators of environmental exposures in fish. However, the role of plasma miRNAs in ... -
High-throughput OpenArray™: novel, swift TaqMan® Real-Time PCR chip for diagnostic biomarkers in Oncorhynchus tshawytscha
(University of Waterloo, 2024-01-26)In 2014, aquaculture replaced capture fisheries as the primary source of fish supply for human consumption for the first time in history, but to date, fish domestication has not developed enough to cope with the ... -
Historical trends of polychlorinated dibenzo-p-dioxins and dibenzofurans in fish and sediment associated with two bleached kraft pulp mills in northern Ontario.
(University of Waterloo, 2013-12-11)In the early 1990s polychlorinated dibenzo-p-dioxin (PCDD) and dibenzofuran (PCDF) contamination of fish was widely associated with bleached kraft pulp mills. Regulations were put into place in Canada and elsewhere to ... -
The HOTHEAD Protein: Assessing Enzymatic Activity using Computational and Recombinant Protein Expression Approaches
(University of Waterloo, 2019-04-30)In Arabidopsis thaliana, a number of genes regulating cuticle synthesis have been identified by virtue of organ fusion phenotype. One such gene, HOTHEAD (HTH) was among those originally identified by this phenotype but its ... -
The Hyalella (Crustacea: Amphipoda) species cloud of the ancient Lake Titicaca originated from multiple colonizations
(Elsevier, 2018-08)Ancient lakes are renowned for their exceptional diversity of endemic species. As model systems for the study of sympatric speciation, it is necessary to understand whether a given hypothesized species flock is of monophyletic ...