Field metabolic rate and body water turnover of the red fox (Vulpes vulpes) in Australia
Data(s) |
01/01/2003
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Resumo |
We measured the daily energy expenditure of free-living red foxes <i>Vulpes vulpes</i> occupying a temperate region of New South Wales, Australia. Field metabolic rate (FMR) and body water turnover were estimated using doubly labelled water. In autumn, male body mass ranged from 5 to 6.1 kg (mean 5.6 kg) and their FMRs averaged 2328 kJ/day. Female body mass in autumn ranged from 4.9 to 6.6 kg (mean 5.4 kg) and their FMRs averaged 1681 kJ/day. Body water influx for males and females was 314 and 251 mL/day, respectively. Body composition of each fox was analysed after the field measurements and revealed a significant correlation between body water content, as estimated from tritiated water space, and body lipids (r<sup>2 </sup>= 0.72). This supports the use of body water determination as a potentially non-destructive method to gauge body condition.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
Wiley - Blackwell Publishing |
Relação |
http://dx.doi.org/10.1046/j.1365-2907.2003.00015.x |
Direitos |
2003, Mammal Society |
Palavras-Chave | #body condition #doubly labelled water #energetics #stable isotopes #water flux |
Tipo |
Journal Article |