A5009594858- Bat Biology and Ecology Studies
- Viral Infections and Vectors
- Marine animal studies overview
- Effects of Environmental Stressors on Livestock
- Physiological and biochemical adaptations
- Wildlife Ecology and Conservation
- Avian ecology and behavior
- Yersinia bacterium, plague, ectoparasites research
- Species Distribution and Climate Change
- Ecology and biodiversity studies
- Animal Vocal Communication and Behavior
- Hydrology and Sediment Transport Processes
- Archaeology and Natural History
- Geological formations and processes
- Soil erosion and sediment transport
- Growth Hormone and Insulin-like Growth Factors
- Coastal and Marine Dynamics
- Evolution and Paleontology Studies
- Adipose Tissue and Metabolism
- Animal Behavior and Reproduction
- Marine and environmental studies
- American Environmental and Regional History
- Peatlands and Wetlands Ecology
- Bird parasitology and diseases
- Integrated Water Resources Management
University of Waterloo
2020-2025
Texas Tech University
2015-2023
Conservation Science Partners
2021
Wildlife Conservation Society Canada
2021
Ecological Society of America
2020
University of Winnipeg
2013-2019
Ministry of Natural Resources and Forestry
2018
University of Regina
2017
Harvard University
2017
University of British Columbia
2015
Many species of birds and bats undertake seasonal migrations between breeding over-wintering sites. En-route, migrants alternate periods flight with time spent at stopover – the space where individuals rest refuel for subsequent flights. We assessed spatial scale movements made by during using an array automated telemetry receivers multiple antennae to track daily location over a geographic area ∼20×40 km. tracked 322 seven migratory vertebrate (5 passerines, 1 owl bat) spring fall on...
1. Some bat species make long-distance latitudinal migrations between summer and winter grounds, but because of their elusive nature, few aspects biology are well understood. The need for migratory stopover sites to rest refuel, such as used by birds, has been repeatedly suggested, not previously tested empirically in bats. 2. We studied migrating silver-haired bats (Lasionycteris noctivagans) at Long Point, ON, Canada. digital radio-transmitters track 30 using an array five towers that...
Since its discovery in the winter of 2005-2006, white-nose syndrome (WNS) has killed over one million little brown bats (Myotis lucifugus) American northeast. Although many studies have reported die-offs at hibernacula, it is important to understand how bat mortality linked WNS hibernacula affects activity levels their summer ranges. In (May-August) 2007, 2008 and 2009, we recorded echolocation calls determine sites along Hudson River, NY (within approx. 100 km where was first reported). We...
Summary The management of infectious diseases is an important conservation concern for a growing number wildlife species. However, effective disease control in challenging because feasible options are often lacking. White‐nose syndrome ( WNS ) hibernating bats that currently threatens several North American species with extinction. Currently, no treatments exist . We conducted laboratory experiment to test the efficacy probiotic treatment Pseudomonas fluorescens , bacterium naturally occurs...
Bats and birds must balance time energy budgets during migration. Migrating bats face similar physiological challenges to birds, but nocturnality creates special for bats, such as a conflict between travelling refueling, which many avoid by feeding in daylight flying at night. As endothermic animals, alike expend substantial amounts of maintain high body temperatures. For migratory refueling stopovers, remaining euthermic inactive periods reduces the net refuelling rate, thereby prolonging...
Fungal diseases of wildlife typically manifest as superficial skin infections but can have devastating consequences for host physiology and survival. White-nose syndrome (WNS) is a fungal disease that has killed millions hibernating bats in North America since 2007. Infection with the fungus Pseudogymnoascus destructans causes to rewarm too often during hibernation, cause increased arousal rates remains unknown. On basis data from studies captive free-living bats, two mechanistic models been...
Researchers often use simple body condition indices (BCI) to estimate the relative size of fat stores in bats. Animals determined be better are assumed more successful and have higher fitness. The most common BCI used bat research ratio index (body mass divided by forearm length) or residual (residuals mass-forearm length regression) size-corrected mass. We data from previous ongoing studies where composition (fat wet lean mass) was measured quantitative magnetic resonance test basic...
Migratory connectivity is the degree to which populations are linked in space and time across annual cycle. Low indicates mixing of while high population separation or time. High migratory makes individual susceptible local environmental conditions; therefore, evaluating continuously a species range important for understanding differential trends revealing places times contributing these differences. The common nighthawk Chordeiles minor widespread, declining, long‐distance bird. Variable...
Abstract Multidisciplinary approaches to conservation and wildlife management are often effective in addressing complex, multi-factor problems. Emerging fields such as physiology behaviour can provide innovative solutions strategies for target species systems. Sensory ecology combines the study of ‘how animals acquire’ process sensory stimuli from their environments, ecological evolutionary significance respond’ this information. We review benefits that bring by discussing case studies...
Abstract To investigate the effect of hypophyseal transection (HST) on GH secretagogue activity non-peptidyl L-692,585 in conscious pig, male castrated swine were randomly assigned to either a stalk group (HST; n =3) or sham-operated control (SOC; =3). Treatments administered (100 γg/kg), human GH-releasing factor(1–29)NH 2 (GRF; 20 γg/kg) + GRF (20 days −7 −3 before surgery and +3 +8 after surgery. evaluate integrity pituitary gland, animals challenged with corticotropin-releasing hormone...
Background Annual movements of tri-colored bats (Perimyotis subflavus) are poorly understood. While this species has been considered a regional migrant, some evidence suggests that it may undertake annual latitudinal migrations, similar to other long distance North American migratory bat species. Methodology/Principal Findings We investigated migration in P. subflavus by conducting stable hydrogen isotope analyses 184 museum specimen fur samples and comparing these results (δDfur) published...
SUMMARY Many species of bats migrate long distances, but the physiological challenges migration are poorly understood. We tested hypothesis that is physiologically demanding for by examining migration-related phenotypic flexibility. Both and birds endothermic, flying vertebrates; therefore, we predicted would result in similar trade-offs. compared hoary (Lasiurus cinereus) during spring summer non-migratory periods, comparing our results with previous observations birds. Migrating had...
In this contribution to Dr. Brock Fenton's Festschrift, we briefly reflect on seminal works examining bat swarming behaviour in Ontario and use these reflections as a launch pad conduct global review autumn bats, underlying hypotheses explain behaviour. Our frames the period time of critical transitions, during which bats must balance multiple life history trade-offs, consider how various intrinsic extrinsic factors may contribute inter- intraspecific differences We discuss transition away...
Processes associated with recovery of survivors are understudied components wildlife infectious diseases. White-nose syndrome (WNS) in bats provides an opportunity to study disease survivors, understand implications for individual energetics, and assess the role pathogen transmission. We documented temporal patterns from WNS little brown (Myotis lucifugus) following hibernation test hypotheses that: (1) wing structure matches a rapid time scale (i.e. approximately 30 days) suggested by data...
Many species of bats undergo annual migrations, in some cases covering distances 1,000 km or more. However, very little is known about the physiological and biochemical mechanisms underlying bat migration. In contrast, physiology migrating birds has been studied for decades many migration-related changes have documented. Although evolved flight long-distance migration independently, they likely experienced similar selective pressures. We therefore suggest that knowledge bird can be used to...
Quantitative magnetic resonance (QMR) is a new technology for measuring body composition of live, nonanesthetized animals (fat mass, lean and total water) in 4 min or less. We conducted validation study to compare QMR analysis 3 species bats (mass range 5.77–31.30 g) with traditional chemical extraction. In addition scans live animals, we tested the effectiveness salvaged specimens (bats killed by wind turbines) effects carcass temperature. Our indicates that effective animals. Frozen...
The influence of behaviour on host-parasite dynamics has theoretical support but few empirical studies have examined this for wild-captured hosts, especially in colonial species, which are thought to face generally high risk exposure. Behavioural tendencies hosts novel environments could mediate host We tested the hypothesis that behavioural and sex age, correlate with prevalence intensity ectoparasites a gregarious mammal, little brown bat ( Myotis lucifugus ). also whether relationships...
Abstract Caves and other subterranean features provide unique environments for many species. The importance of cave microclimate is particularly relevant at temperate latitudes where bats make seasonal use caves hibernation. White‐nose syndrome (WNS), a fungal disease that has devastated populations hibernating across eastern central North America, brought renewed interest in bat hibernation hibernaculum conditions. A recent review synthesized current understanding climatology, exploring the...
At temperate latitudes insectivorous bats face substantial nutritional demands prior to hibernation. As temperature decreases and availability of insect prey declines, must deposit nutrient stores for The use torpor allows limit energy expenditures resulting in a net gain despite decreased intake. However, subadult have lower initial fat than adults may greater difficulty depositing sufficient survive the winter. We used plasma metabolite analysis determine fueling performance little brown (...