Browsing Biology by Title
Now showing items 174-193 of 597
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Early-rearing Environment and Mate Choice in Chinook Salmon (Oncorhynchus tshawytscha) Aquaculture: Effects on the Immune System
(University of Waterloo, 2011-08-09)Canada is the fourth largest producer of farmed salmon in the world, with Atlantic salmon being the major species cultivated. Paradoxically British Columbia (BC), which borders the Pacific Ocean, is the major producer ... -
Ecological Assessment of Re-flooded Mesopotamian Marshes (Iraq)
(University of Waterloo, 2015-12-17)Assessing the ecological characteristics (water quality and the biological functions) of the Mesopotamian marshes is necessary to evaluate their recovery. Mesopotamian marshes have been affected by several anthropogenic ... -
Ecological Factors Controlling Microcystin Concentrations in the Bay of Quinte, Maumee Bay, and Three Grand River Reservoirs
(University of Waterloo, 2008-01-25)Certain types of cyanobacteria have the potential to produce toxins including microcystin, a hepatotoxin. Toxic cyanobacterial blooms are becoming increasingly common worldwide. They are a concern in the Great Lakes and ... -
Ecological Modelling of Lake Erie: Sensitivity Analysis and Simulation of Nutrient, Phytoplankton and Zooplankton Dynamics
(University of Waterloo, 2011-05-02)Lake Erie has undergone a substantial amount of ecosystem changes over the past century; including cultural eutrophication and several invasions by industrious exotic species. Simple mass balance models for phosphorus have ... -
Ecology of Ammonia-oxidizing Archaea and Bacteria in Freshwater Biofilters
(University of Waterloo, 2014-01-29)Aquarium biofilters are designed to promote the growth and activity of nitrifying microorganisms, which are primarily responsible for the removal of toxic nitrogen-cycle intermediates. Ammonia is a natural waste product ... -
Ecology of Juvenile Arctic charr in Canada
(University of Waterloo, 2013-06-14)Increases in global temperatures resulting from climate change have raised concern over potential responses of Arctic charr, <i>Salvelinus alpinus</i>, a cold-adapted freshwater/anadromous fish species in the salmonid ... -
The ecology of the nuisance macroalga, Cladophora glomerata, and its resurgence in Lake Ontario
(University of Waterloo, 2008-02-22)Cladophora glomerata is the dominant spring and summer epilithic macroalga in the lower Laurentian Great Lakes, and was a notorious nuisance prior to nutrient management of the early 1970s. It is an indicator of excessive ... -
Ecosystem oxygen metabolism in an impacted temperate river network: Application of the δ18O-DO approach
(University of Waterloo, 2013-04-22)Ecosystem metabolism is an important indicator of aquatic ecosystem function. This thesis concerns ecosystem metabolism as recorded by daily variation in dissolved oxygen (DO) and δ18O-DO in an impacted temperate river ... -
The effect of a protein-restricted diet during pregnancy on the expression of the amino acid transporter System B0,+ in early rat embryos
(University of Waterloo, 2010-01-04)Epidemiological studies have shown that human adults have a higher chance of developing various metabolic disorders, such as type II diabetes and hypertension, due to maternal under nutrition. The concept that conditions ... -
Effect of Background Water Matrices on Pharmaceutical and Personal Care Product Removal by UV-LED/TiO2
(Multidisciplinary Digital Publishing Institute, 2021-04-30)In this study, we evaluated the effectiveness of UV-LED-irradiated TiO2 in removing 24 commonly detected PPCPs in two water matrices (municipal wastewater effluent and Suwannee River NOM–synthetic water) and compared their ... -
Effect of combined sodium arsenite and cadmium chloride treatment on heat shock protein gene expression in Xenopus laevis A6 kidney epithelial cells
(University of Waterloo, 2013-09-26)Sodium arsenite and cadmium chloride are two widespread environmental toxicants which have deleterious effects on living organisms. At the cellular level, sodium arsenite and cadmium chloride cause oxidative stress, ... -
Effect of Fuel Ethanol on Subsurface Microorganisms and its Influence on Biodegradation of BTEX Compounds.
(University of Waterloo, 2000)Ethanol is used as fuel in neat form in some countries (Brazil and India) or blended with gasoline (Europe, Canada and the United States). The benefits of ethanol use include octane enhancement, a cleaner environment and ... -
The effect of glyphosate on bacteria and archaea community composition in freshwater biofilms
(University of Waterloo, 2022-04-04)Glyphosate-based herbicides are some of the most widely used herbicides in the world today, however, there is still much to learn about how glyphosate affects non-target ecosystems. Specifically, freshwater aquatic biofilms ... -
Effect of heat shock factor inhibitor, KNK437, on stress-induced hsp30 gene expression in Xenopus laevis A6 cells
(University of Waterloo, 2008-05-01)Prokaryotic and eukaryotic organisms respond to various stresses with the production of heat shock proteins (HSPs). HSPs are molecular chaperones that bind to unfolded proteins and inhibit their aggregation as well as ... -
Effect of hemin and baicalein on heme oxygenase-1 accumulation and function in Xenopus laevis cultured cells
(University of Waterloo, 2018-04-26)Heme oxygenase-1 (HO-1) is a stress-inducible enzyme that catalyzes the rate-limiting step in the hemin degradation pathway. Studies in mammalian systems determined that HO-1 promoted cell survival by reducing oxidative ... -
Effect of hemin, baicalein and heme oxygenase-1 (HO-1) enzyme activity inhibitors on Cd-induced accumulation of HO-1, HSPs and aggresome-like structures in Xenopus kidney epithelial cells
(Elsevier, 2018-08-01)Cadmium is a highly toxic environmental pollutant that can cause many adverse effects including cancer, neurological disease and kidney damage. Aquatic amphibians are particularly susceptible to this toxicant as it was ... -
The effect of isothiocyanates on heat shock protein, heme oxygenase-1 and α-tubulin levels and localization in Xenopus A6 kidney cells
(University of Waterloo, 2017-07-19)Numerous studies have elucidated the health promoting properties of organosulfur compounds derived from cruciferous vegetables known as isothiocyanates (ITCs). As electrophiles, the impact of ITCs at the molecular level ... -
The effect of positively autocorrelated thermal variance on the reproduction and individual growth of nematode Caenorhabditis elegans
(University of Waterloo, 2015-09-18)The effect of uncorrelated and positively autocorrelated temperature variance on the offspring production and individual development of the nematode Caenorhabditis elegans was examined at two different temperature means: ... -
Effect of Suboptimal Temperature on Endogenous Antigen Presentation in Two Fish Species, Oncorhynchus mykiss and Sander vitreus
(University of Waterloo, 2019-04-30)Winter months and the increasing frequency and magnitude of extreme low temperature events, occurring as a result of global climate change, subject teleosts such as rainbow trout and walleye to suboptimal temperatures, ... -
The Effect of Unbalanced Dietary Methionine fed to Pregnant Rats on Maternal and Fetal One-Carbon Metabolism
(University of Waterloo, 2012-04-02)Protein restriction during rodent pregnancy is a well-established model of developmental programming. Although the Southampton low-protein diet model of developmental programming has been accepted to produce hypertensive ...