Embracing heterothermic diversity: non-stationary waveform analysis of temperature variation in endotherms.
J Comp Physiol B
; 187(5-6): 749-757, 2017 Jul.
Article
in En
| MEDLINE
| ID: mdl-28353177
ABSTRACT
Recent research is revealing incredible diversity in the thermoregulatory patterns of wild and captive endotherms. As a result of these findings, classic thermoregulatory categories of 'homeothermy', 'daily heterothermy', and 'hibernation' are becoming harder to delineate, impeding our understanding of the physiological and evolutionary significance of variation within and around these categories. However, we lack a generalized analytical approach for evaluating and comparing the complex and diversified nature of the full breadth of heterothermy expressed by individuals, populations, and species. Here we propose a new approach that decomposes body temperature time series into three inherent properties-waveform, amplitude, and period-using a non-stationary technique that accommodates the temporal variability of body temperature patterns. This approach quantifies circadian and seasonal variation in thermoregulatory patterns, and uses the distribution of observed thermoregulatory patterns as a basis for intra- and inter-specific comparisons. We analyse body temperature time series from multiple species, including classical hibernators, tropical heterotherms, and homeotherms, to highlight the approach's general usefulness and the major axes of thermoregulatory variation that it reveals.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Body Temperature
/
Eutheria
Limits:
Animals
Language:
En
Journal:
J Comp Physiol B
Journal subject:
BIOQUIMICA
/
FISIOLOGIA
/
METABOLISMO
Year:
2017
Document type:
Article
Affiliation country:
United States
Publication country:
ALEMANHA
/
ALEMANIA
/
DE
/
DEUSTCHLAND
/
GERMANY