A5060692633- Fish Ecology and Management Studies
- Physiological and biochemical adaptations
- Aquaculture Nutrition and Growth
- Aquaculture disease management and microbiota
- Reproductive biology and impacts on aquatic species
- Ichthyology and Marine Biology
- Fish Biology and Ecology Studies
- Aquatic Invertebrate Ecology and Behavior
- Structural and Chemical Analysis of Organic and Inorganic Compounds
- Hemiptera Insect Studies
- Fish biology, ecology, and behavior
- Chemical Synthesis and Analysis
- Receptor Mechanisms and Signaling
- Isotope Analysis in Ecology
- Renin-Angiotensin System Studies
- Wildlife Ecology and Conservation
- Insect Resistance and Genetics
- Marine and fisheries research
- Chemical Synthesis and Reactions
- Environmental Toxicology and Ecotoxicology
- Marine Bivalve and Aquaculture Studies
- Synthesis and Reactions of Organic Compounds
- Anesthesia and Pain Management
- Genetic and phenotypic traits in livestock
- Nitric Oxide and Endothelin Effects
University of Manitoba
2016-2025
Bamfield Marine Sciences Centre
2014-2025
The University of Tokyo
2020
Milwaukee VA Medical Center
2017
The University of Queensland
2008
University of New Brunswick
2008
University of Nebraska–Lincoln
2003-2005
University of St Andrews
2001-2005
In-Q-Tel
2003
University of Waterloo
1997-1999
The only anesthetic registered in North America for use fisheries science is 3-aminobenzoic acid ethyl ester methanesulfate (tricaine or MS-222). Although MS-222 a very effective anesthesia several fish species, its application the field limited because U.S. Food and Drug Administration guidelines demand 21-d withdrawal period after exposure to before can be released enter food chain. As consequence, carbon dioxide (CO2) has been used as substitute anesthetic; however, induction recovery...
Swimming performance was compared among groups of juvenile rainbow trout Oncorhynchus mykiss (5–10 g) with and without intraperitoneally implanted radio transmitters. The generally accepted rule 2% body weight : transmitter extended to a 6–12% ratio, swimming not altered by the presence or effects operation. Also, no relationship found between fish its examined. Although we affected implantation transmitters weighing up 12% weight, changes in behavior were evaluated. We suggest further...
<h3>Importance</h3> Less than one-third of patients with major depressive disorder (MDD) achieve remission their first antidepressant. <h3>Objective</h3> To determine the relative effectiveness and safety 3 common alternate treatments for MDD. <h3>Design, Setting, Participants</h3> From December 2012 to May 2015, 1522 at 35 US Veterans Health Administration medical centers who were diagnosed nonpsychotic MDD, unresponsive least 1 antidepressant course meeting minimal standards treatment dose...
Animal metabolic rate is variable and may be affected by endogenous exogenous factors, but such relationships remain poorly understood in many primitive fishes, including members of the family Acipenseridae (sturgeons). Using juvenile lake sturgeon (Acipenser fulvescens), objective this study was to test four hypotheses: 1) A. fulvescens exhibits a circadian rhythm influencing behaviour; 2) has capacity regulate when exposed environmental hypoxia; 3) measurements forced maximum (MMR(F)) are...
Abstract Temperature is one of the most important abiotic factors regulating development and biological processes in ectotherms. By 2050, climate change may result temperature increases 2.1–3.4°C Manitoba, Canada. Lake sturgeon, Acipenser fulvescens, from both northern southern populations Manitoba were acclimated to 16, 20 24°C for 30 days, after which critical thermal maximum (CTmax) trials conducted investigate their plasticity. We also examined effects on morphological physiological...
Several short-acting beta-adrenergic receptor blocking agents have been prepared by incorporating ester functions into the aryl portion of certain (aryloxy)propanolamine systems. In particular, methyl 3-[4-[2-hydroxy-3-(isopropylamino)propoxy]phenyl]propionate hydrochloride (ASL-8052) was found to be a moderately potent, cardioselective compound with short duration action when determined in vivo canine models.
In an attempt to produce short-acting beta-adrenergic receptor blocking agents, we prepared several (aryloxy)propanolamines with ester functions incorporated into the nitrogen substituent. Many of these compounds exhibited a short duration activity after their continuous intravenous infusion for 40 min. However, durations were found increase considerably upon longer infusion.
An examination was made of whether social interactions can have a beneficial effect through the attenuation stress response in species. In first experiment, one larger (mean ± s . e 194·0 12·5 g) and seven smaller (32·0 2·6 juvenile lake sturgeon Acipenser fulvescens were placed tanks to determine classic dominance would be established based on body size ( n = 6). Large fish did not establish territory or aggressively interact with fish, as there no significant differences nearest‐neighbour...
Abstract Development of rehabilitation strategies and accurate assessment anthropogenic impacts relies on a thorough understanding species’ life history. In the case lake sturgeon Acipenser fulvescens , better juvenile history stages is needed to improve conservation efforts for this imperiled species. Home range size seasonal movement in Winnipeg River, Manitoba, were examined using mark–recapture acoustic telemetry. Over 30‐month period (May 2006–October 2008), 5,671 (213–879 mm fork...
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...
An increased understanding of the juvenile life history stage lake sturgeon, Acipenser fulvescens, has been recognized as a key requirement for improving conservation efforts this once abundant species. The objectives current study were to develop an effective methodology capturing sturgeon in large riverine environment; describe physical habitat characteristics (depth, water velocity and substrate) associated with areas where captured; determine basic population parameters (length, body...
Abstract Rising mean and variance in temperatures elevates threats to endangered freshwater species such as lake sturgeon, Acipenser fulvescens . Previous research demonstrated that higher during development result physiological consequences for sturgeon populations throughout Manitoba, Canada, with alteration of metabolic rate, thermal tolerance, transcriptional responses, growth mortality. We acclimated (30–60 days post fertilization, a period high mortality) from northern southern...
Abstract Hydroelectric development is considered a threat to the recovery of Lake Sturgeon Acipenser fulvescens populations, in part because injury and mortality concerns caused by interaction with hydroelectric facilities. resident small impoundments may be particularly susceptible entrainment, depending on movement habitat usage patterns. Using acoustic telemetry, we monitored coarse‐scale movements 99 juvenile, subadult adult captured throughout 10‐km‐long reservoir. Overall, adults moved...
ABSTRACT Disturbance by anthropogenic activities may cause chronic (long‐term) stress in wildlife and contribute to population declines. Although declines of boreal woodland caribou ( Rangifer tarandus ) across Canada have been attributed disturbance, the physiological response disturbance is not well understood. As a measure stress, we assessed cortisol concentrations guard hair from 89 female between 2009 2011 eastern Manitoba. We compared among 5 populations occupying areas with varying...