Publications

Social housing and social isolation: Impact on stress indices and energy balance in male and female Syrian hamsters (Mesocricetus auratus)

Although Syrian hamsters are thought to be naturally solitary, recent evidence from our laboratory demonstrates that hamsters may actually prefer social contact. Hamsters increase their preference for a location associated with an agonistic encounter regardless of whether they have “won”...

Year Published: 2017Topics: Social Housing & CompanionshipAnimal Type: Hamster, Rodent

Citation: Ross, A. P., Norvelle, A., Choi, D. C. et al. 2017. Social housing and social isolation: Impact on stress indices and energy balance in male and female Syrian hamsters (Mesocricetus auratus). Physiology & Behavior 177, 264-269.

Female rats display fewer optimistic responses in a judgment bias test in the absence of a physiological stress response

Metabolic cages are a type of housing used in biomedical research. Metabolic cage housing has been demonstrated to elicit behavioural and physiological changes in rodents housed within them. The nature of this effect has been characterized as anxiogenic. However, few...

Year Published: 2017Topics: Emotion, Pain, & Sentience, HousingAnimal Type: Rat, Rodent

Citation: Barker, T. H., Bobrovskaya, L., Howarth, G. S. et al. 2017. Female rats display fewer optimistic responses in a judgment bias test in the absence of a physiological stress response. Physiology & Behavior 173, 124-131.

Up-regulation of IGF-1 in the frontal cortex of piglets exposed to an environmentally enriched arena

Environmental enrichment (EE) is widely used in the life sciences to study effects of environment on the brain. In pigs, despite lack of EE being a key welfare issue there is little understanding of brain effects of EE in pigs....

Year Published: 2017Topics: Environmental EnrichmentAnimal Type: Pig

Citation: Brown, S. M., Peters, R., Lawrence, A. B. 2017. Up-regulation of IGF-1 in the frontal cortex of piglets exposed to an environmentally enriched arena. Physiology & Behavior 173, 285-292.

The effect of different genres of music on the stress levels of kennelled dogs’

Classical music has been shown to reduce stress in kennelled dogs; however, rapid habituation of dogs to this form of auditory enrichment has also been demonstrated. The current study investigated the physiological and behavioural response of kennelled dogs (n =...

Year Published: 2017Topics: Environmental EnrichmentAnimal Type: Dog

Citation: Bowman, A., Scottish SPCA, Dowell, F. J. et al. 2017. 'The effect of different genres of music on the stress levels of kennelled dogs'. Physiology & Behavior 171, 207-215.

The psychobiology of social pain: Evidence for a neurocognitive overlap with physical pain and welfare implications for social animals with special attention to the domestic dog (Canis familiaris)

Social pain is the negative affect signaling threat or harm to social relationships. Loneliness is perceived social isolation and can be found across phylogeny. Evidence from diverse fields demonstrates an overlap of social and physical pain. Social pain can elicit...

Year Published: 2016Topics: Social Housing & CompanionshipAnimal Type: All/General, Dog

Citation: McMillan, F. D. 2016. The psychobiology of social pain: Evidence for a neurocognitive overlap with physical pain and welfare implications for social animals with special attention to the domestic dog (Canis familiaris). Physiology & Behavior 167, 154-171.

Tailored enrichment strategies and stereotypic behaviour in captive individually-housed macaques (Macaca spp.)

In this study, I combine both physiological and behavioural measures of well-being to comprehensively assess the unique needs of individually-housed captive macaques (Macaca spp.) at OPR Coastal Primate Sanctuary in Longview, WA, with the aim of developing tailored welfare strategies....

Year Published: 2017Topics: Environmental EnrichmentAnimal Type: Macaque, Nonhuman Primate

Citation: Cannon, T. 2017. Tailored enrichment strategies and stereotypic behaviour in captive individually-housed macaques (Macaca spp.). Canopy 17(2), 13-16.

Rescue-Enrich-Release: The environmental enrichment program for three species of captive primates at Colobus

It is widely known that the psychological wellbeing of captive animals can become compromised by a captive environment that lacks proper environmental stimulation. Environmental enrichment programs have become the norm in captive environments yet research conducting evaluations on the effectiveness...

Year Published: 2017Topics: Environmental EnrichmentAnimal Type: Baboon, Capuchin, Chimpanzee, Lemur, Macaque, Marmoset, Nonhuman Primate, Other Nonhuman Primate, Owl Monkey, Squirrel Monkey, Vervet (African Green Monkey)

Citation: Palmer, S. 2017. Rescue-Enrich-Release: The environmental enrichment program for three species of captive primates at Colobus. Canopy 17(2), 27-30.

Relative response to digital tablet devices and painting as sensory enrichment in captive chimpanzees

Digital devices, including tablet computers and other touchscreens, can potentially serve as flexible and convenient means for providing behavioral enrichment activities to captive primates. Despite increased interest in incorporating technology into enrichment programs, no direct quantitative comparison has previously been...

Year Published: 2018Topics: Environmental EnrichmentAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Grunauer, P. P., Walguarnery, J. W. 2018. Relative response to digital tablet devices and painting as sensory enrichment in captive chimpanzees. Zoo Biology 37(4), 269–273.

Behavioral responses of three lemur species to different food enrichment devices

Environmental enrichment is a tool used to promote the welfare and well‐being of captive animals by encouraging the display of species‐specific behaviors and reducing the stress or boredom induced by captive environments. Lemurs are highly endangered, yet few studies have...

Year Published: 2018Topics: Environmental EnrichmentAnimal Type: Lemur, Nonhuman Primate

Citation: Shapiro, M. E., Shapiro, H. G., Ehmke, E. E. 2018. Behavioral responses of three lemur species to different food enrichment devices. Zoo Biology 37(3), 146–155.

Development of a body condition score for the mountain chicken frog (Leptodactylus fallax)

The Critically Endangered mountain chicken frog (Leptodactylus fallax) has undergone drastic population decline due to habitat loss, hunting, invasive species, and chytridiomycosis. In response, several partner institutions initiated a conservation breeding program. It is important to maintain the captive population...

Year Published: 2018Topics: Welfare AssessmentAnimal Type: Amphibian, Frog & Toad

Citation: Jayson, S., Harding, L., Michaels, C. J. et al. 2018. Development of a body condition score for the mountain chicken frog (Leptodactylus fallax). Zoo Biology 37(3), 196–205.