Number of the records: 1
Poikilothermic traits in Mashona mole-rat (Fukomys darlingi). Reality or myth?
- 1.
SYSNO ASEP 0481507 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Poikilothermic traits in Mashona mole-rat (Fukomys darlingi). Reality or myth? Author(s) Zemanová, Milada (BC-A)
Šumbera, R. (CZ)
Okrouhlík, J. (CZ)Number of authors 3 Source Title Journal of Thermal Biology. - : Elsevier - ISSN 0306-4565
Roč. 37, č. 7 (2012), s. 485-489Number of pages 5 s. Language eng - English Country GB - United Kingdom Keywords subterranean rodent ; Bathyergidae ; poikilothermy Subject RIV ED - Physiology OECD category Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology Institutional support BC-A - RVO:60077344 UT WOS 000307687600004 EID SCOPUS 84861426132 DOI https://doi.org/10.3161/067.058.0104 Annotation The African mole-rats (Bathyergidae, Rodentia) is a mammalian family well known for a variety of ecophysiological adaptations for strictly belowground life. The smallest bathyergid, the hairless naked mole-rat from arid areas in Eastern Africa, is even famous as the only truly poikilothermic mammal. Another bathyergid, the Mashona mole-rat (Fukomys darlingi) from Zimbabwe, is supposed to have strong poikilothermic traits, because it is not able to maintain a stable body temperature at ambient temperatures below 20 degrees C. This is surprising because, compared to the naked mole-rat, this species, together with all congenerics, is larger, haired, and living in more seasonal environment. In addition, other Fukomys mole-rats show typical mammalian pattern in resting metabolic rates. In our study, we measured resting metabolic rate and body temperature of Mashona mole-rats from Malawi across a gradient of ambient temperatures to test its poikilothermic traits. We found that the adult mass specific resting metabolic rate was 0.76 +/- 0.20 ml O-2 g(-1) h(-1) body temperature 34.8 +/- 1.1 degrees C in the thermoneutral zone (27-34 degrees C). Body temperature was stable (33.0 +/- 0.5 degrees C) at ambient temperatures from 10 to 25 degrees C. We thus cannot confirm poikilothermic traits in this species, at least for its Malawian population. Factors potentially explaining the observed discrepancy in Mashona mole-rat energetics are discussed. (C) 2012 Elsevier Ltd. All rights reserved. Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2018 Electronic address http://www.sciencedirect.com/science/article/pii/S0306456512000824
Number of the records: 1