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Research Paper - Coggle Diagram
Research Paper
Results
"the relatively low BMR of birds inhabiting hot arid environments comes from a consequence of generally high temperatures with seasonal extremes"(White et al.2007).
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"endotherms can maintain their body temperature over a wide range of ambient temperatures primarily using their high basal metabolic rate" (Avaria-Llautureo et al., 2019).
There is an equation that was "obtained for the first time to express lifespan as a function of body mass, Rubner's constant, basal metabolic rate, and body temperature in homeothermic animals" (Petrov and Razuvaera, 2018).
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Cited Sources
Petrov AI, Razuvaeva MV. 2018. Effect of Temperature on Metabolism and Lifespan in Several Homeothermic Animals. Technical Physics. 63(10):1410–1414. doi:10.1134/S1063784218100183
White CR, Blackburn TM, Martin GR, Butler PJ. 2007. Basal metabolic rate of birds is associated with habitat temperature and precipitation, not primary productivity. Proceedings of the Royal Society B: Biological Sciences. 274(1607):287–293. doi:10.1098/rspb.2006.3727
Avaria-Llautureo J, Hernández CE, Rodríguez-Serrano E, Venditti C. 2019. The decoupled nature of basal metabolic rate and body temperature in endotherm evolution. Nature. 572(7771):651–654. doi:10.1038/s41586-019-1476-9
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Discussion
The basal metabolic rate in birds plays a role in maintaining body temperature which shows us that BMR can vary depending on temperature to help birds stay alive. Perhaps if temperatures are extreme and a bird BMR is impacted, there can be a toll on their lifespan.
It seems that there are several different aspects that play into animals lifespan that are a linked, with BMR being a chain in that link.