Climate induced stress and mortality in vervet monkeys

Young, C. ORCID: 0000-0001-8919-2093, Bonnell, T.R., Brown, L.R., Dostie, M.J., Ganswindt, A., Kienzle, S., McFarland, R. ORCID: 0000-0001-8245-9269, Henzi, S.P. and Barrett, L., 2019. Climate induced stress and mortality in vervet monkeys. Royal Society Open Science, 6 (11): 191078. ISSN 2054-5703

1484168_Young.pdf - Published version

Download (947kB) | Preview


As the effects of global climate change become more apparent, animal species will become increasingly affected by extreme climate and its effect on the environment. There is a pressing need to understand animal physiological and behavioural responses to climatic stressors. We used the reactive scope model as a framework to investigate the influence of drought conditions on vervet monkey (Chlorocebus pygerythrus) behaviour, physiological stress and survival across 2.5 years in South Africa. Data were collected on climatic, environmental and behavioural variables and physiological stress via faecal glucocorticoid metabolites (fGCMs). There was a meaningful interaction between water availability and resource abundance: when food availability was high but standing water was unavailable, fGCM concentrations were higher compared to when food was abundant and water was available. Vervet monkeys adapted their behaviour during a drought period by spending a greater proportion of time resting at the expense of feeding, moving and social behaviour. As food availability decreased, vervet mortality increased. Peak mortality occurred when food availability was at its lowest and there was no standing water. A survival analysis revealed that higher fGCM concentrations were associated with an increased probability of mortality. Our results suggest that with continued climate change, the increasing prevalence of drought will negatively affect vervet abundance and distribution in our population. Our study contributes to knowledge of the limits and scope of behavioural and physiological plasticity among vervet monkeys in the face of rapid environmental change.

Item Type: Journal article
Publication Title: Royal Society Open Science
Creators: Young, C., Bonnell, T.R., Brown, L.R., Dostie, M.J., Ganswindt, A., Kienzle, S., McFarland, R., Henzi, S.P. and Barrett, L.
Publisher: The Royal Society
Date: November 2019
Volume: 6
Number: 11
ISSN: 2054-5703
Rights: © 2019 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License, which permits unrestricted use, provided the original author and source are credited.
Divisions: Schools > School of Social Sciences
Record created by: Laura Ward
Date Added: 02 Nov 2021 13:56
Last Modified: 02 Nov 2021 13:56

Actions (login required)

Edit View Edit View


Views per month over past year


Downloads per month over past year