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pro vyhledávání: '"Raul K. Suarez"'
Autor:
Raul K. SUAREZ
Publikováno v:
Current Zoology, Vol 59, Iss 3, Pp 371-380 (2013)
Hummingbird migration is a remarkable feat, given the small body sizes of migratory species, their high metabolic rates during flight and the long distances traveled using fat to fuel the effort. Equally remarkable is the ability of premigratory humm
Externí odkaz:
https://doaj.org/article/1b8e5bef12c340c8aa47aae813778612
Autor:
Raul K. Suarez, Kenneth C. Welch
Publikováno v:
Nutrients, Vol 9, Iss 7, p 743 (2017)
Hummingbirds and nectar bats coevolved with the plants they visit to feed on floral nectars rich in sugars. The extremely high metabolic costs imposed by small size and hovering flight in combination with reliance upon sugars as their main source of
Externí odkaz:
https://doaj.org/article/8a2ff3fd5dc8461aa468829f0a56b8a9
Autor:
Raul K. Suarez, Hans Hoppeler
Publikováno v:
The Journal of experimental biology. 221(Pt Suppl 1)
For a long time, adipose tissue has been known as either a storage site for lipid fuel or a site for thermogenesis. Adipocyte functions and their regulation are often thought of as scientific stories with familiar, happy endings. To many, fat has bec
Autor:
Kenneth C. Welch, Raul K. Suarez
Publikováno v:
Nutrients
Nutrients, Vol 9, Iss 7, p 743 (2017)
Nutrients, Vol 9, Iss 7, p 743 (2017)
Hummingbirds and nectar bats coevolved with the plants they visit to feed on floral nectars rich in sugars. The extremely high metabolic costs imposed by small size and hovering flight in combination with reliance upon sugars as their main source of
Autor:
Christopher D. Moyes, Raul K. Suarez
Publikováno v:
Journal of Experimental Biology. 215:2351-2357
Much research in comparative physiology is now performed using ‘omics’ tools and many results are interpreted in terms of the effects of changes in gene expression on energy metabolism. However, ‘metabolism’ is a complex phenomenon that spans
Publikováno v:
Journal of Experimental Biology. 214:172-178
SummaryMost hummingbirds and some species of nectar bats hover while feeding on floral nectar. While doing so, they achieve some of the highest mass-specific values among vertebrates. This is made possible by enhanced functional capacities of various
Autor:
Raul K. Suarez, Kenneth C. Welch
Publikováno v:
Canadian Journal of Zoology. 86:161-169
During migratory stopovers, rufous hummingbirds ( Selasphorus rufus (Gmelin, 1788)) can achieve high daily rates of net energy intake and mass gain while foraging at a range of elevations and ambient temperatures, despite the high energetic costs of
Publikováno v:
Journal of Experimental Biology. 211:310-316
SUMMARY It is thought that the capacity of mammals to directly supply the energetic needs of exercising muscles using recently ingested fuels is limited. Humans,for example, can only fuel about 30%, at most, of exercise metabolism with dietary sugar.
Autor:
Raul K. Suarez, Kenneth C. Welch
Publikováno v:
Journal of Experimental Biology. 210:2154-2162
SUMMARY Hummingbirds obtain most of their dietary calories from floral nectar ingested during hovering flight. Despite the importance of dietary sugar to hummingbird metabolism, the turnover of newly ingested carbon in the pool of actively metabolize
Publikováno v:
Journal of Experimental Biology. 210:2146-2153
SUMMARY The stoichiometric relationship of ATP production to oxygen consumption,i.e. the P/O ratio, varies depending on the nature of the metabolic substrate used. The latest estimates reveal a P/O ratio approximately 15% higher when glucose is oxidi