Are southern African solitary mole-rats homeothermic or heterothermic under natural field conditions?

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F21%3A43902877" target="_blank" >RIV/60076658:12310/21:43902877 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0306456520305817?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0306456520305817?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jtherbio.2020.102810" target="_blank" >10.1016/j.jtherbio.2020.102810</a>

Result language

angličtina

Original language name

Are southern African solitary mole-rats homeothermic or heterothermic under natural field conditions?

Original language description

Abandoning of a stable body temperature (T-b), a phenomenon known as hetemthermy, is an adaptation to cope mainly with a lack of food and water, especially in species inhabiting daily or seasonally variable environments. There is increasing evidence that African mammals avoid adverse conditions by heterothermy and eventually by entering torpor. Members of subterranean rodent family, the African mole-rats (Bathyergidae), are suitable candidates to study both phenomena, because of the diversity of their strategies in respect of maintaining stable T-b ranging from homeothermic species to a mammal with the most labile T-b, the naked mole-rat. Currently, there are field data on daily and seasonal T-b in one social species only and such information are lacking for any solitary mole-rat. In our study, we recorded yearly T-b in two solitary bathyergids, the Cape mole-rat Georychus capensis and the Cape dune mole-rat Bathyergus suillus from South Africa using intraperitoneally implanted dataloggers. Since this region is characterised by changing ecological characteristics, we expected either decreases of T-b within 24 h indicating daily torpor and/or longer-term decreases of T-b, which would indicate multiday torpor. Although we found seasonally phase shifted low amplitude daily T-b cycles, we did not find any remarkable and regular daily and/or seasonal T-b deviations, likely showing an absence of torpor in both species. Due to absence of this energy saving mechanism, we may speculate that both species could be vulnerable to ongoing global climatic change.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10602 - Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology

Project

<a href="/en/project/GA17-19896S" target="_blank" >GA17-19896S: Problems and solutions of thermoregulation in subterranean mammals</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Thermal Biology

ISSN

0306-4565

e-ISSN

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Volume of the periodical

95

Issue of the periodical within the volume

January

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

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UT code for WoS article

000609163800005

EID of the result in the Scopus database

2-s2.0-85098171106