Shaving increases daily energy expenditure in free-living root voles

Paulina A. Szafrańska, Karol Zub, Monika Wieczorek, Aneta Książek, John R. Speakman, Marek Konarzewski

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Experimental manipulation of energy expenditure has long been recognized as an effective means for identifying causative effects and avoiding confounded interpretations arising from spurious correlations. This approach has been successfully applied mainly to studies on birds, particularly on reproducing adults, whereas manipulations in mammals have proved more problematic. Here, we tested the hypothesis that shaving off 50% of the dorsal pelage should effectively increase energy expenditure in wild root voles (Microtus oeconomus) in their natural environment. We measured daily energy expenditure (DEE), using doubly labelled water in shaved and unshaved voles at the beginning of winter. The difference in DEE (corrected for body mass and year effects) between experimental and control group fluctuated from 11.5% to 17.3%. Probability of recapture over the 3 day DEE assay was strongly dependent on body mass, but did not differ between shaved and unshaved animals; however, a prevalence of larger (heavier) shaved individuals was observed. Shaved animals lost more weight between the first and second trapping. Shaving therefore appears to be an effective method of increasing the cost of total DEE in wild endotherms in their natural environment.

Original languageEnglish
Pages (from-to)3964-3967
Number of pages4
JournalJournal of Experimental Biology
Volume217
Issue number22
Early online date12 Nov 2014
DOIs
Publication statusPublished - 15 Nov 2014

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Microtus oeconomus
Arvicolinae
energy expenditure
Energy Metabolism
expenditure
energy
body mass
pelage
animal
Birds
trapping
Mammals
animals
mammal
assay
mammals
bird
Weights and Measures
Costs and Cost Analysis
Control Groups

Keywords

  • Body mass
  • Doubly labelled water
  • Fur insulation
  • mammal
  • metabolic rate
  • thermoregulation

Cite this

Szafrańska, P. A., Zub, K., Wieczorek, M., Książek, A., Speakman, J. R., & Konarzewski, M. (2014). Shaving increases daily energy expenditure in free-living root voles. Journal of Experimental Biology, 217(22), 3964-3967. https://doi.org/10.1242/jeb.103754

Shaving increases daily energy expenditure in free-living root voles. / Szafrańska, Paulina A.; Zub, Karol; Wieczorek, Monika; Książek, Aneta; Speakman, John R.; Konarzewski, Marek.

In: Journal of Experimental Biology, Vol. 217, No. 22, 15.11.2014, p. 3964-3967.

Research output: Contribution to journalArticle

Szafrańska, PA, Zub, K, Wieczorek, M, Książek, A, Speakman, JR & Konarzewski, M 2014, 'Shaving increases daily energy expenditure in free-living root voles', Journal of Experimental Biology, vol. 217, no. 22, pp. 3964-3967. https://doi.org/10.1242/jeb.103754
Szafrańska PA, Zub K, Wieczorek M, Książek A, Speakman JR, Konarzewski M. Shaving increases daily energy expenditure in free-living root voles. Journal of Experimental Biology. 2014 Nov 15;217(22):3964-3967. https://doi.org/10.1242/jeb.103754
Szafrańska, Paulina A. ; Zub, Karol ; Wieczorek, Monika ; Książek, Aneta ; Speakman, John R. ; Konarzewski, Marek. / Shaving increases daily energy expenditure in free-living root voles. In: Journal of Experimental Biology. 2014 ; Vol. 217, No. 22. pp. 3964-3967.
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