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Long-lasting consequences of elevated yolk testosterone for metabolism in the zebra finch.

Nilsson, Johan LU ; Tobler, Michael LU ; Nilsson, Jan-Åke LU and Sandell, Maria LU (2011) In Physiological and Biochemical Zoology 84(3). p.287-291
Abstract
Abstract Resting metabolic rate is a common way of quantifying the cost of living in endothermic animals. The trait often makes up a substantial part of an animal's energy budget and can also be related to sustainable peak work rate as well as to daily energy expenditure. Studies have shown that metabolic rates are often heritable, but much of the variation seems to be caused by other factors (e.g., environmental and maternal effects). In a previous study, in ovo exposure to increased levels of testosterone induced metabolic costs early in life. It is, however, unknown whether in ovo androgens also have long-term effects on individual metabolic rates. In this study, we show that experimentally increased levels of in ovo testosterone in... (More)
Abstract Resting metabolic rate is a common way of quantifying the cost of living in endothermic animals. The trait often makes up a substantial part of an animal's energy budget and can also be related to sustainable peak work rate as well as to daily energy expenditure. Studies have shown that metabolic rates are often heritable, but much of the variation seems to be caused by other factors (e.g., environmental and maternal effects). In a previous study, in ovo exposure to increased levels of testosterone induced metabolic costs early in life. It is, however, unknown whether in ovo androgens also have long-term effects on individual metabolic rates. In this study, we show that experimentally increased levels of in ovo testosterone in zebra finches (Taeniopygia guttata) result in a 7% higher resting metabolic rate when they are adults. This shows that maternally transferred hormones can induce long-term effects on metabolic demands and potentially influence variation in life-history strategies among offspring. Variation in maternal hormone transfer may also explain some of the large interindividual variation observed in metabolic rates. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physiological and Biochemical Zoology
volume
84
issue
3
pages
287 - 291
publisher
University of Chicago Press
external identifiers
  • wos:000290665700006
  • scopus:79955943003
ISSN
1522-2152
DOI
10.1086/659006
language
English
LU publication?
yes
id
47f2a2b1-5a73-4493-af62-2f91b1683121 (old id 1936622)
date added to LUP
2011-05-13 12:26:54
date last changed
2017-01-01 04:00:07
@article{47f2a2b1-5a73-4493-af62-2f91b1683121,
  abstract     = {Abstract Resting metabolic rate is a common way of quantifying the cost of living in endothermic animals. The trait often makes up a substantial part of an animal's energy budget and can also be related to sustainable peak work rate as well as to daily energy expenditure. Studies have shown that metabolic rates are often heritable, but much of the variation seems to be caused by other factors (e.g., environmental and maternal effects). In a previous study, in ovo exposure to increased levels of testosterone induced metabolic costs early in life. It is, however, unknown whether in ovo androgens also have long-term effects on individual metabolic rates. In this study, we show that experimentally increased levels of in ovo testosterone in zebra finches (Taeniopygia guttata) result in a 7% higher resting metabolic rate when they are adults. This shows that maternally transferred hormones can induce long-term effects on metabolic demands and potentially influence variation in life-history strategies among offspring. Variation in maternal hormone transfer may also explain some of the large interindividual variation observed in metabolic rates.},
  author       = {Nilsson, Johan and Tobler, Michael and Nilsson, Jan-Åke and Sandell, Maria},
  issn         = {1522-2152},
  language     = {eng},
  number       = {3},
  pages        = {287--291},
  publisher    = {University of Chicago Press},
  series       = {Physiological and Biochemical Zoology},
  title        = {Long-lasting consequences of elevated yolk testosterone for metabolism in the zebra finch.},
  url          = {http://dx.doi.org/10.1086/659006},
  volume       = {84},
  year         = {2011},
}