A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Individual variation in metabolic reaction norms over ambient temperature causes low correlation between basal and standard metabolic rate
Tekijät: Briga M, Verhulst S
Kustantaja: COMPANY OF BIOLOGISTS LTD
Julkaisuvuosi: 2017
Journal: Journal of Experimental Biology
Tietokannassa oleva lehden nimi: JOURNAL OF EXPERIMENTAL BIOLOGY
Lehden akronyymi: J EXP BIOL
Vuosikerta: 220
Numero: 18
Aloitussivu: 3280
Lopetussivu: 3289
Sivujen määrä: 10
ISSN: 0022-0949
eISSN: 1477-9145
DOI: https://doi.org/10.1242/jeb.160069
Tiivistelmä
Basal metabolic rate (BMR) is often assumed to be indicative of the energy turnover at ambient temperatures (T-a) below the thermoneutral zone (SMR), but this assumption has remained largely untested. Using a new statistical approach, we quantified the consistency in nocturnal metabolic rate across a temperature range in zebra finches (N=3213 measurements on 407 individuals) living permanently in eight outdoor aviaries. Foraging conditions were either benign or harsh, and body mass and mass-adjusted BMR (BMRm) and SMR (SMRm) were lower in individuals living in a harsh foraging environment. The correlation between SMRm at different T-a was high (r=0.91), independent of foraging environment, showing that individuals are consistently ranked according to their SMRm. However, the correlations between BMRm and SMRm were always lower (average: r=0.29; range: 0
Basal metabolic rate (BMR) is often assumed to be indicative of the energy turnover at ambient temperatures (T-a) below the thermoneutral zone (SMR), but this assumption has remained largely untested. Using a new statistical approach, we quantified the consistency in nocturnal metabolic rate across a temperature range in zebra finches (N=3213 measurements on 407 individuals) living permanently in eight outdoor aviaries. Foraging conditions were either benign or harsh, and body mass and mass-adjusted BMR (BMRm) and SMR (SMRm) were lower in individuals living in a harsh foraging environment. The correlation between SMRm at different T-a was high (r=0.91), independent of foraging environment, showing that individuals are consistently ranked according to their SMRm. However, the correlations between BMRm and SMRm were always lower (average: r=0.29; range: 0
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