Seasonal Changes in Locomotor Activity Patterns of Wild Social Natal Mole-Rats (Cryptomys hottentotus natalensis)

KT Finn, AK Janse van Vuuren, DW Hart… - Frontiers in Ecology …, 2022 - frontiersin.org
Differences in individual locomotor activity patterns may be linked to a number of ecological
factors, such as changes in ambient temperature or photoperiod. Observations on …

The evolution and ecology of oxidative and antioxidant status: a comparative approach in African mole-rats

PJ Jacobs, DW Hart, HN Merchant, C Voigt… - Antioxidants, 2023 - mdpi.com
The naked mole-rat of the family Bathyergidae has been the showpiece for ageing research
as they contradict the traditional understanding of the oxidative stress theory of ageing …

Energetics and water flux in the subterranean rodent family Bathyergidae

DW Hart, NC Bennett, MK Oosthuizen… - Frontiers in Ecology …, 2022 - frontiersin.org
The doubly labeled water (DLW) technique and indirect calorimetry enable measurement of
an animal's daily energy expenditure (DEE, kJ/day), resting metabolic rate (RMR, kJ/d) …

Equivocal support for the climate variability hypothesis within a N eotropical bird assemblage

HS Pollock, CL Rutt, WJ Cooper, JD Brawn… - Ecology, 2024 - Wiley Online Library
The climate variability hypothesis posits that an organism's exposure to temperature
variability determines the breadth of its thermal tolerance and has become an important …

Ambient Temperature as a Strong Zeitgeber of Circadian Rhythms in Response to Temperature Sensitivity and Poor Heat Dissipation Abilities in Subterranean …

DW Hart, B van Jaarsveld, KG Lasch… - Journal of …, 2021 - journals.sagepub.com
Mammals have evolved circadian rhythms in internal biological processes and behaviors,
such as locomotor activity (LA), to synchronize to the environmental conditions they …

Filling in the holes: The reproductive biology of the understudied Mahali mole-rat (Cryptomys hottentotus mahali)

DW Hart, K Medger, B Van Jaarsveld… - Canadian Journal of …, 2021 - cdnsciencepub.com
African mole-rats have provided great insight into mammalian evolution of sociality and
reproductive strategy. However, some species have not received attention, and these may …

Tissue oxidative ecology along an aridity gradient in a mammalian subterranean species

PJ Jacobs, DW Hart, HN Merchant… - Antioxidants, 2022 - mdpi.com
Climate change has caused aridification which can alter habitat vegetation, soil and
precipitation profiles potentially affecting resident species. Vegetation and soil profiles are …

Defining the link between oxidative stress, behavioural reproductive suppression and heterothermy in the Natal mole-rat (Cryptomys hottentotus natalensis)

PJ Jacobs, KT Finn, AKJ van Vuuren, T Suess… - … and Physiology Part B …, 2022 - Elsevier
Sub-lethal effects, such as oxidative stress, can be linked to various breeding and
thermophysiological strategies, which themselves can be linked to seasonal variability in …

[HTML][HTML] The relationship between hypoxia exposure and circulating cortisol levels in social and solitary African mole-rats: An initial report

DW Hart, NC Bennett, C Best, B van Jaarsveld… - General and …, 2023 - Elsevier
Hypoxemia from exposure to intermittent and/or acute environmental hypoxia (lower oxygen
concentration) is a severe stressor for many animal species. The response to hypoxia of the …

[HTML][HTML] Hopping from the heat: The locomotory activity patterns of the Lesser Egyptian Jerboa (Jaculus jaculus)

NC Bennett, DW Hart, S Munro, N Amor… - Journal of Arid …, 2024 - Elsevier
Arid-dwelling mammals are exposed to extreme daily temperatures, which puts these
mammals at risk of overheating and dehydration, particularly while active, these risks are …