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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/GA17-19896S" target="_blank" >GA17-19896S: Problémy a řešení termoregulace podzemních savců</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of Thermal Biology

ISSN

0306-4565

e-ISSN

—

Svazek periodika

95

Číslo periodika v rámci svazku

January

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

000609163800005

EID výsledku v databázi Scopus

2-s2.0-85098171106