A5050977143- Aquaculture Nutrition and Growth
- Physiological and biochemical adaptations
- Aquaculture disease management and microbiota
- Marine Bivalve and Aquaculture Studies
- Fish Ecology and Management Studies
- Ocean Acidification Effects and Responses
- Ichthyology and Marine Biology
- Reproductive biology and impacts on aquatic species
- Marine animal studies overview
- Birth, Development, and Health
- Environmental Toxicology and Ecotoxicology
- Cancer-related molecular mechanisms research
- Biochemical effects in animals
- Protein Hydrolysis and Bioactive Peptides
- Echinoderm biology and ecology
- RNA modifications and cancer
- Pesticide and Herbicide Environmental Studies
- Neurobiology and Insect Physiology Research
- Meat and Animal Product Quality
- Renin-Angiotensin System Studies
- Marine Sponges and Natural Products
- Lipid metabolism and biosynthesis
- Chemical synthesis and alkaloids
- Marine Biology and Ecology Research
- Marine Toxins and Detection Methods
University of Manitoba
2020-2025
Bamfield Marine Sciences Centre
2017-2025
University of British Columbia
2025
University of Alberta
2017-2025
Alberta Hospital Edmonton
2019
ABSTRACT Shallow or near-shore environments, such as ponds, estuaries and intertidal zones, are among the most physiologically challenging of all aquatic settings. Animals inhabiting these environments experience conditions that fluctuate markedly over relatively short temporal spatial scales. Living in habitats requires ability to tolerate physiological disturbances incurred by environmental fluctuations. This tolerance is achieved through a suite behavioural responses allow animals...
Abstract Hydraulic fracturing fluid are complex mixtures containing high concentrations of salts (up to 330,000 ppm), organic, and metal contaminants. However, little data exist on the potential mechanisms toxicity these flowback produced wastewaters (FPW) aquatic biota. Juvenile rainbow trout were exposed either control, FPW (2.5 or 7.5%), that had been treated with activated charcoal (AC), a custom salt-matched control (SW; replicating only salt content FPW) for 48 hours. Gill histology...
Acidification is a key component of digestion throughout metazoans. The gut digestive fluid many invertebrates acidified by the vesicular-type H+-ATPase (VHA). In contrast, vertebrates generate acidic fluids using gastric H+/K+-ATPase (HKA); an evolutionary innovation linked with appearance true stomach that greatly improves digestion, absorption, and immune function. Hagfishes are most basal extant vertebrates, their mechanism acidification remains unclear. Herein we report stomachless...
Lake trout (Salvelinus namaycush) is an important food fish in Northern communities, inhabiting cool, well-oxygenated water. Yet, climate change reducing available habitat with extended summer stratification of lakes creating upper thermal barrier (~15 °C) and lower dissolved oxygen (DO) boundary (4-7 mg L -1 ). Together, these environmental factors can influence tolerance thresholds may lead to abiotic exceeding physiological lake habitats. Thresholds shift acclimation populations, but the...
The regulation of ionic, osmotic and acid-base (IOAB) conditions in biological fluids is among the most fundamental functions all organisms; being surrounded by water uniquely shapes IOAB regulatory strategies water-breathing animals. Throughout its centennial history, Journal Experimental Biology has established itself as a premier venue for publication comparative, environmental evolutionary studies on regulation. This Review provides synopsis aquatic animals, some significant research...
Thermal tolerance and associated mechanisms are often tested via the critical thermal maximum (CTmax). The agitation temperature is a recently described limit in fishes that has received little mechanistic evaluation. present study used temperate elasmobranch fish to test hypothesis this trait partially set by onset of declining cardiorespiratory performance cellular stress response. Pacific spiny dogfish (Squalus suckleyi) were screened for whole-organism limits associations between...
Chronic exposure to high temperatures may leave freshwater fishes vulnerable opportunistic pathogens, particularly during early life stages. Lake sturgeon, Acipenser fulvescens, populations within the northern expanse of their range in Manitoba, Canada, be susceptible temperature stress and pathogenic infection. We acclimated developing lake sturgeon for 22 days two ecologically relevant, summer (16 20°C). Individuals from both acclimation treatments were then exposed 0, 30 60 µg ml-1...
ABSTRACT Nitrogen recycling and amino acid synthesis are two notable ways in which the gut microbiome can contribute to host metabolism, these processes especially important nitrogen-limited animals. Marine elasmobranchs nitrogen limited as they require substantial amounts of this element support urea-based osmoregulation. However, following antibiotic-induced depletion microbiome, known experience a significant decline circulating urea employ compensatory conservation strategies such...
Hagfish consume carrion, potentially exposing them to hypoxia, hypercapnia, and high environmental ammonia (HEA). We investigated branchial cutaneous handling strategies by which Pacific hagfish (Eptatretus stoutii) tolerate recover from loading. were exposed HEA (20 mmol/l) for 48 h elevate plasma total (TAmm) levels before placement into divided chambers a 4-h recovery period in ammonia-free seawater where excretion (JAmm) was measured independently the anterior posterior compartments....
Hagfishes are living representatives of the earliest-diverging vertebrates and thus useful for study early vertebrate physiology. It has been previously postulated that digestive enzymes account majority digestion because hagfish agastric with notable zymogen granules in specialized cells hindgut. While presence some (amylase, lipase leucinaminopeptidase) have confirmed histochemistry, quantification enzymatic activity is limited. This sought to biochemically quantify tissue six (α-amylase,...
The lake sturgeon (Acipenser fulvescens) is an ancient, octoploid fish faced with conservation challenges across its range in North America, but a lack of genomic resources has hindered molecular research the species. To support such research, we created transcriptomic database from 13 tissues: brain, esophagus, gill, head kidney, heart, white muscle, liver, glandular stomach, muscular anterior intestine, pyloric cecum, spiral valve and rectum. transcriptomes for each tissue were sequenced...
Bifenthrin is an effective pyrethroid pesticide with known detrimental effects on aquatic biota, despite its relative insolubility in water.