A5000200293- Primate Behavior and Ecology
- Wildlife Ecology and Conservation
- Child and Animal Learning Development
- Wildlife-Road Interactions and Conservation
- Animal Vocal Communication and Behavior
- Memory and Neural Mechanisms
- Spatial Cognition and Navigation
- Animal Behavior and Reproduction
- Turtle Biology and Conservation
- Animal Behavior and Welfare Studies
- Reproductive Biology and Fertility
- Amphibian and Reptile Biology
- Human-Animal Interaction Studies
- Species Distribution and Climate Change
- Genetic and phenotypic traits in livestock
- Bat Biology and Ecology Studies
- Behavioral and Psychological Studies
- Sperm and Testicular Function
- Rangeland Management and Livestock Ecology
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Animal Nutrition and Physiology
- Genetic Mapping and Diversity in Plants and Animals
- Cognitive and developmental aspects of mathematical skills
- Innovative Teaching and Learning Methods
- Qualitative Research Methods and Applications
York University
2016-2025
National Renewable Energy Laboratory
2022-2024
Kenya Wildlife Service
2023
University of California, Davis
2019
Universiti Malaysia Sarawak
2019
Nature Conservancy of Canada
2019
McGill University
2006-2018
University of Akron
1995-2015
Montreal Children's Hospital
2013
Toronto Zoo
2011
Pigeons and humans searched for a goal that was hidden in varied locations within search space. The location fixed relative to an array of identical landmarks. on the laboratory floor, table top or outdoor field. In Experiment 1, centered square 4 When spacing between landmarks increased, middle expanded array, whereas pigeons preserved distance direction individual landmark. 2, perpendicular away from 2 aligned left-fight dimension. landmark humans, but not pigeons, shifted their searching...
Pigeons and humans searched on a touch-screen monitor for an unmarked goal located relative to array of landmarks presented in varied screen locations. After training with the centered various square arrays 4 landmarks, humans, but not pigeons, transferred accurately novel elements. Humans middle expanded arrays, whereas pigeons preserved distance direction single landmark. When trained below 2 identical horizontally aligned responded horizontal expansions or contractions by shifting their...
<h3>Objective</h3> To determine whether metformin or placebo could, in conjunction with healthy lifestyle counseling, decrease serum testosterone levels and related aberrations adolescents hyperandrogenism, hyperinsulinemia, polycystic ovarian syndrome. <h3>Design</h3> Randomized, placebo-controlled, double-blind trial. <h3>Setting</h3> Pediatric university teaching hospital. <h3>Participants</h3> Twenty-two aged 13 to 18 years hyperinsulinemia <h3>Intervention</h3> Participants were...
We report a novel approach of fertility preservation in young woman with mosaic Turner syndrome. A 16-year-old female 20% 45XO and 80% 46XX karyotype underwent laparoscopic ovarian wedge resection. Before performing tissue cryopreservation, all visible follicles on the surface were aspirated. recovered 11 immature germinal vesicle stage oocytes, which subjected to vitro maturation (IVM). Eight oocytes that matured (73% rate) cryopreserved by vitrification. The combination cryobanking oocyte...
Despite being heavily exploited, pangolins (Pholidota: Manidae) have been subject to limited research, resulting in a lack of reliable population estimates and standardised survey methods for the eight extant species. Camera trapping represents unique opportunity broad-scale collaborative species monitoring due its largely non-discriminatory nature, which creates considerable volumes data on relatively wide range This has potential shed light ecology rare, cryptic understudied taxa, with...
Facilitative associations between the foundational shrub species Ephedra californica and local vertebrate can drive positive interactions within desert ecosystems that influence diversity assembly processes. These shrubs contribute to structural heterogeneity of for plants animals including variation in temperature profiles, refuge from predation, habitat foraging. Artificial structures also fine‐scale ecological micro‐environmental dynamics. We tested hypothesis artificial (mimics)...
With many advancements, technologies are now capable of recording non-human animals' location, heart rate, and movement, often using a device that is physically attached to the monitored animals. However, our knowledge, there currently no technology able do this unobtrusively non-invasively. Here, we review history for use with animals, recent technological current limitations, brief introduction proposed novel software. Canadian tech mogul EAIGLE Inc. has developed an artificial...
The COVID-19 pandemic led to unprecedented lockdowns with rippling impacts on the lives of humans and animals alike. Since zoos were among first institutions close during pandemic, presented opportunity conduct a natural experiment examining relationship between visitor presence welfare zoo-housed animals. In this study, we assessed six Sumatran orangutans (Pongo abelii) at Toronto Zoo both following lockdowns. We compared behavioural physiological indicators lockdown after visitors...
The extent to which nonhumans are able form conceptual versus perceptual discriminations remains a matter of debate. Among the great apes, only chimpanzees have been tested for understanding, defined as ability not based solely on simple features stimuli, and transfer this learning novel stimuli. In present investigation, young captive female gorilla was trained at three levels abstraction (concrete, intermediate, abstract) involving sets photographs representing natural categories (e.g.,...
Although research with animals is often done under the assumption that visual abilities are similar across species, ability of most animals, including orangutans, has not been experimentally evaluated.In this study we assessed contrast sensitivity function (CSF) two female zoo-housed Sumatran orangutans (Pongo abelii) aged 20 and 26 years old.Orangutans were rewarded for selecting vertical or horizontal square wave gratings at correct orientation.Results showed a CSF in shape position to...
With its roots firmly planted in behaviorist and animal learning traditions, lab-based research is an enduring pervasive characteristic of comparative cognition.In this review, we discuss progress cognition other experimental settings such as zoos, captive parks, wild settings.Zoos provide access to a large array species housed seminatural environments that allow reasonable degree control.Thanks the advent computer technology, wide range complex cognitive processes increasingly being...
The spatial memory of 2 gorillas (Gorilla gorilla gorilla) was explored in a simulated foraging task. Trials consisted parts separated by delay. In the 1st part, half total number food sites were baited with highly preferred food, and subject allowed to search, find, consume these items (search phase). During delay same locations again baited. After animal reintroduced test enclosure search through (re-search Experiment 1, an adult very accurate remembering that had previously contained at...
Levels of abstraction have rarely been manipulated in studies natural concept formation nonhumans. Isolated examples indicated that animals, relative to humans, may learn concepts at varying levels with differential ease. The ability 6 orangutans (Pongo abelii) various ages make discriminations 3 was therefore investigated. were rewarded for selecting photos instead humans and other primates (concrete level), animals (intermediate nonanimals (abstract level) a 2-choice touch screen...
Music is commonly employed as auditory enrichment in NHP facilities under the assumption that music enriching for NHPs it humans (Hinds et al., 2007; Lutz & Novak, 2005). The purpose of this study was to assess utility by exploring musical preference and discriminative ability three Sumatran orangutans. In Experiment 1, orangutan vs. silence tested. Following exposure a sample belonging one seven genres, orangutans were given choice via touchscreen continue listen previously played or...
Conservation policy and practice can sometimes run counter to their mutual aims of ensuring species survival. In Kenya, where threatened predators such as lion deplete endangered prey Grevy's zebra, conservation practitioners seek ensure success through exclusive strategies protection, population increase preservation. We found strong selection for the zebra by both hyena on two small fenced conservancies in Kenya. Despite abundant diversity available prey, were selected disproportionately...