dc.contributor.author |
Van Jaarsveld, Barry
|
|
dc.contributor.author |
Bennett, Nigel Charles
|
|
dc.contributor.author |
Hart, Daniel William
|
|
dc.contributor.author |
Oosthuizen, Maria Kathleen
|
|
dc.date.accessioned |
2019-12-09T05:36:45Z |
|
dc.date.issued |
2019-01 |
|
dc.description.abstract |
African mole-rats (family: Bathyergidae) are strictly subterranean mammals that reside in extensive networks of underground tunnels. They are rarely, if ever, exposed to light and experience muted temperature ranges. Despite these constant conditions, the presence of a functional circadian clock capable of entraining to external light cues has been reported for a number of species. In this study, we examine a social mole-rat species, Cryptomys hottentotus mahali, to determine if it possesses a functional circadian clock that is capable of perceiving light and ambient temperature cycles, and can integrate these cues into circadian rhythms of locomotor activity and core body temperature. Eight male and eight female, non-reproductive individuals were subjected to six cycles of varying light and temperature regimes. The majority of the individuals displayed daily rhythms of locomotor activity and body temperature that are synchronised to the external light and temperature cycles. Furthermore, endogenous rhythms of both locomotor activity and core body temperature were displayed under constant conditions. Thus, we can conclude that C. h. mahali possesses a functional circadian clock that can integrate external light and temperature cues into circadian rhythms of locomotor activity and core-body temperature. |
en_ZA |
dc.description.department |
Mammal Research Institute |
en_ZA |
dc.description.department |
Zoology and Entomology |
en_ZA |
dc.description.embargo |
2020-01-01 |
|
dc.description.librarian |
hj2019 |
en_ZA |
dc.description.sponsorship |
The SARChI chair for Mammal Behavioural Ecology and Physiology, South Africa, # 64796 to NCB. |
en_ZA |
dc.description.uri |
http://www.elsevier.com/locate/jtherbio |
en_ZA |
dc.identifier.citation |
Van Jaarsveld, B., Bennett, N.C., Hart, D.W. et al. 2019, 'Locomotor activity and body temperature rhythms in the Mahali mole-rat (C. h. mahali) : the effect of light and ambient temperature variations', Journal of Thermal Biology, vol. 79, pp. 24-32. |
en_ZA |
dc.identifier.issn |
0306-4565 (print) |
|
dc.identifier.issn |
1879-0992 (online) |
|
dc.identifier.other |
/10.1016/j.jtherbio.2018.11.013 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/72540 |
|
dc.language.iso |
en |
en_ZA |
dc.publisher |
Elsevier |
en_ZA |
dc.rights |
© 2018 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Journal of Thermal Biology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Journal of Thermal Biology, vol. 79, pp. 24-32, pp. , 2019. doi : /10.1016/j.jtherbio.2018.11.013. |
en_ZA |
dc.subject |
African mole-rats (Bathyergidae) |
en_ZA |
dc.subject |
Mahali mole-rat (Cryptomys mahali) |
en_ZA |
dc.subject |
Locomotor activity |
en_ZA |
dc.subject |
Circadian rhythms |
en_ZA |
dc.subject |
Body temperature |
en_ZA |
dc.title |
Locomotor activity and body temperature rhythms in the Mahali mole-rat (C. h. mahali) : the effect of light and ambient temperature variations |
en_ZA |
dc.type |
Postprint Article |
en_ZA |