Basal metabolic rate in free‐ranging tropical birds lacks long‐term repeatability and is influenced by ambient temperature

2021 ◽  
Author(s):  
Andrey Bushuev ◽  
Ekaterina Zubkova ◽  
Oleg Tolstenkov ◽  
Anvar Kerimov
Keyword(s):  
Metabolic Rate ◽  
Ambient Temperature ◽  
Basal Metabolic Rate ◽  
Tropical Birds ◽  
Free Ranging

scholarly journals Mosaic metabolic ageing: Basal and standard metabolic rate age in opposite directions and independent of environmental quality, sex or lifespan in a passerine

2019 ◽  
Author(s):  
Michael Briga ◽  
Simon Verhulst
Keyword(s):  
Metabolic Rate ◽  
Ambient Temperature ◽  
Environmental Quality ◽  
Basal Metabolic Rate ◽  
Standard Metabolic Rate ◽  
Ageing Process ◽  
List Type ◽  
Ambient Temperatures ◽  
Metabolic Traits ◽  
Ageing Rate

AbstractCrucial to our understanding of the ageing process is identifying how traits change with age, which variables alter their ageing process and whether these traits associate with lifespan.We here investigated metabolic ageing in zebra finches. We longitudinally monitored 407 individuals during six years and collected 3213 measurements of two independent mass-adjusted metabolic traits: basal metabolic rate (BMRm) at thermoneutral temperatures and standard metabolic rate (SMRm), which is the same as BMRm but at ambient temperatures below thermoneutrality.BMRmdecreased linearly with age, consistent with earlier reports. In contrast, SMRmincreased linearly with age. To the best of our knowledge, this is the first quantification of SMRm ageing, and thereby of the contrast between SMRm and BMRm ageing.Neither metabolic rate nor metabolic ageing rate were associated with individual lifespan. Moreover, experimental manipulations of environmental quality that decreased BMRm and SMRm and shortened lifespan with 6 months (12%) did not affect the ageing of either metabolic trait. Females lived 2 months (4%) shorter than males, but none of the metabolic traits showed sex-specific differences at any age.Our finding that ageing patterns of metabolic rate vary depending on the ambient temperature illustrates the importance of studying ageing in an ecologically realistic setting.Our results add to the mounting evidence that within an organism ageing is an asynchronous process.

scholarly journals Incubation temperature and physiological aging in the zebra finch

PLoS ONE ◽  
2021 ◽  
Vol 16 (11) ◽  
pp. e0260037
Author(s):  
Henrik H. Berntsen ◽  
Claus Bech
Keyword(s):  
Body Size ◽  
Oxidative Damage ◽  
Metabolic Rate ◽  
Body Mass ◽  
Basal Metabolic Rate ◽  
Incubation Temperature ◽  
Phenotypic Variability ◽  
Body Growth ◽  
Optimal Incubation

In birds, incubation temperature has received increased attention as an important source of phenotypic variability in offspring. A lower than optimal incubation temperature may negatively affect aspects of nestling physiology, such as body growth and energy metabolism. However, the long-term effects of sub-optimal incubation temperature on morphology and physiology are not well understood. In a previous study, we showed that zebra finches from eggs incubated at a low temperature (35.9°C) for 2/3 of the total incubation time suffered a lower post-fledging survival compared to individuals that had been incubated at higher temperatures (37.0 and 37.9°C). In the present study, we investigated whether these variations in incubation temperature could cause permanent long-lasting differences in body mass, body size, or basal metabolic rate. Furthermore, we tested whether the observed differences in survival between treatment groups would be reflected in the rate of physiological deterioration, assessed through oxidative damage and decreased metabolic rate with age (i.e. ‘metabolic aging’). Incubation temperature did not significantly affect embryonic or nestling body growth and did not influence final adult body mass or body size. Nor was there any long-term effect on basal metabolic rate. Birds from eggs incubated at the lowest temperature experienced an accumulation of oxidative damage with age, although this was not accompanied by an accelerated rate of metabolic aging. The present results suggest that the low survival in these birds was possibly mediated by increased oxidative stress, but independent of body growth and the basal metabolic rate.

scholarly journals Basal metabolic rate in free-living tropical birds: the influence of phylogenetic, behavioral, and ecological factors

2017 ◽  
Vol 64 (1) ◽  
pp. 33-43 ◽  
Author(s):  
Andrey Bushuev ◽  
Oleg Tolstenkov ◽  
Ekaterina Zubkova ◽  
Eugenia Solovyeva ◽  
Anvar Kerimov
Keyword(s):  
Metabolic Rate ◽  
Basal Metabolic Rate ◽  
Ecological Factors ◽  
Tropical Birds ◽  
Free Living

scholarly journals Long-term repeatability of winter basal metabolic rate and mass in a wild passerine

2009 ◽  
Vol 23 (4) ◽  
pp. 768-773 ◽  
Author(s):  
Juli Broggi ◽  
Esa Hohtola ◽  
Kari Koivula ◽  
Markku Orell ◽  
Jan-��ke Nilsson
Keyword(s):  
Metabolic Rate ◽  
Basal Metabolic Rate

scholarly journals On the Interplay among Ambient Temperature, Basal Metabolic Rate, and Body Mass

2018 ◽  
Vol 192 (4) ◽  
pp. 518-524 ◽  
Author(s):  
Daniel E. Naya ◽  
Hugo Naya ◽  
Craig R. White
Keyword(s):  
Metabolic Rate ◽  
Ambient Temperature ◽  
Body Mass ◽  
Basal Metabolic Rate
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