Browsing Science (Faculty of) by Subject "fish"
Now showing items 1-16 of 16
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Analysis of Immune System and Stress Parameters of Oncorhynchus mykiss in Response to Juvenile Thermal Preconditioning or Thermal-Based Parental Selection
(University of Waterloo, 2021-09-20)Higher water temperatures and pathogens are both significant factors that negatively affect the welfare of teleost fish. In aquaculture, compared to natural populations, these problems are especially exacerbated, as the ... -
Characterization of the Downstream Effects of the Rainbow Trout (Oncorhynchus mykiss) Chemokine, CK-2 on Macrophages
(University of Waterloo, 2010-05-25)Chemokines are chemotactic cytokines that have the ability to attract leukocytes and guide them via a concentration gradient to sites of injury/infection. These small, basic proteins are secreted when induced and act on ... -
The characterization of γH2AX as a biomarker of genotoxicity in Oncorhynchus mykiss
(University of Waterloo, 2017-05-19)Environmental contamination due to by-products and waste from industrial activities is a growing universal concern, especially regarding the impact on water and the aquaculture industry. Conventional tests to diagnose ... -
Does intersex matter? A case study of rainbow darter in the Grand River
(University of Waterloo, 2016-12-21)Endocrine disrupting compounds (EDCs) are present in the environment and can have negative effects on the health of wildlife. Aquatic organisms residing near the outfalls of municipal wastewater effluent (MWWE) are chronically ... -
Effects of Hydroelectric Dam Operation on Downstream Fish Populations
(University of Waterloo, 2016-05-12)Naturally flowing rivers form a longitudinal gradient of physical conditions to which fish communities are adapted. Hydroelectric dams disrupt the river continuum, resulting in alterations to downstream hydrologic and ... -
Environmental variability and intraspecies diversification in Arctic charr (Salvelinus alpinus)
(University of Waterloo, 2016-06-17)Arctic charr (Salvelinus alpinus) exhibit what is arguably the greatest observed range of phenotypic and ecological diversity within a single vertebrate species. The patterns of adaptive diversity that have developed among ... -
Fish (Oreochromis niloticus) as a Model of Refractive Error Development
(University of Waterloo, 2009-01-13)Myopia is a common ocular condition worldwide and the mechanism of myopia is still not clear. A number of animal models of myopia and refractive error development have been proposed. The fact that form deprivation myopia ... -
Fish feeding variability over space and time in natural and regulated boreal rivers
(University of Waterloo, 2016-09-20)Within the boreal region of Canada, river ecosystems are affected by naturally low flows in the summer months and hydropower operations, which can greatly influence the structure and function of river food webs. Few long-term ... -
A Functional Study of Major Histocompatibility Expression and Immune Function in Rainbow Trout, (Oncorhynchus mykiss)
(University of Waterloo, 2006)Major Histocompatibility Complex (MHC) receptors serve a critical role in self/non-self recognition through the presentation of peptide antigen to circulating T lymphocytes and are also believed to play a role in mate ... -
Impact of the antidepressant venlafaxine on the hypothalamus-pituitary-interrenal axis function in rainbow trout
(University of Waterloo, 2014-05-27)Over the recent years, venlafaxine has become the predominant antidepressant drug detected in municipal wastewater effluents (MWWE) and aquatic systems. However, very little is known about the effect of this drug in the ... -
Microcystin in Ugandan lakes: Production dynamics, accumulation in fish, and risk evaluation
(University of Waterloo, 2010-12-23)Eutrophication of freshwater lakes has led to an increase in the occurrence of harmful cyanobacterial blooms, and it is expected that a warming climate will further exacerbate the frequency and duration of such blooms. ... -
Multi-stressor impacts on fish energetics and stress response: a comparison between lab and field studies
(University of Waterloo, 2017-08-24)Aquatic organisms are continuously exposed to multiple environmental stressors that work cumulatively and synergistically to alter ecosystems. The objective of this study was to investigate the impacts of multiple stressors ... -
Seasonal and environmental effects on physiological tolerances and gill adaptations of imperilled Eastern Sand Darter (Ammocrypta pellucida)
(University of Waterloo, 2024-02-15)In the absence of accurate biological information, conservation and recovery strategies carry the risk of failing to meet their objectives. Understanding species-specific physiological tolerances is important for several ... -
Understanding acute stress-mediated immunity in teleost fish
(Elsevier, 2021-12)The abilities and ways in which organisms respond to stress have long been demonstrated to affect the immune response of the organism. In mammalian studies, researchers have observed that chronic/long-term stress has a ... -
VER-155008 induced Hsp70 proteins expression in fish cell cultures while impeding replication of two RNA viruses
(Elsevier, 2019-02-01)The heat-shock protein 70 (Hsp70) inhibitor, VER-155008 (VER), was explored as a potential antiviral agent for two RNA viruses important to fish aquaculture, viral hemorrhagic septicemia virus (VHSV) and infectious pancreatic ... -
Wild fish responses to wastewater treatment plant upgrades in the Grand River, Ontario
(University of Waterloo, 2020-09-24)Municipal wastewater treatment plant (WWTP) effluent is a major point source of contaminants (nutrients, pharmaceuticals, estrogens, etc.) which can harm aquatic life. Many studies have investigated the effects of WWTP ...