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Incubation temperature affects growth and energy metabolism in blue tit nestlings.

Nord, Andreas LU and Nilsson, Jan-Åke LU (2011) In American Naturalist 178(5). p.639-651
Abstract
Because the maintenance of proper developmental temperatures during avian incubation is costly to parents, embryos of many species experience pronounced variation in incubation temperature. However, the effects of such temperature variation on nestling development remain relatively unexplored. To investigate this, we artificially incubated wild blue tit (Cyanistes caeruleus L.) clutches at 35.0°, 36.5°, or 38.0°C for two-thirds of the incubation period. We returned clutches to their original nests before hatching and subsequently recorded nestling growth and resting metabolic rate. The length of the incubation period decreased with temperature, whereas hatching success increased. Nestlings from the lowest incubation temperature group had... (More)
Because the maintenance of proper developmental temperatures during avian incubation is costly to parents, embryos of many species experience pronounced variation in incubation temperature. However, the effects of such temperature variation on nestling development remain relatively unexplored. To investigate this, we artificially incubated wild blue tit (Cyanistes caeruleus L.) clutches at 35.0°, 36.5°, or 38.0°C for two-thirds of the incubation period. We returned clutches to their original nests before hatching and subsequently recorded nestling growth and resting metabolic rate. The length of the incubation period decreased with temperature, whereas hatching success increased. Nestlings from the lowest incubation temperature group had shorter tarsus lengths at 2 weeks of age, but body mass and wing length were not affected by temperature. In addition, nestlings from the lowest temperature group had a significantly higher resting metabolic rate compared with mid- and high-temperature nestlings, which may partly explain observed size differences between the groups. These findings suggest that nest microclimate can influence nestling phenotype, but whether observed differences carry over to later life-history stages remains unknown. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
American Naturalist
volume
178
issue
5
pages
639 - 651
publisher
University of Chicago Press
external identifiers
  • wos:000296715600010
  • pmid:22030733
  • scopus:80054883049
ISSN
0003-0147
DOI
10.1086/662172
language
English
LU publication?
yes
id
d80946ac-7a9a-49bf-b577-344de4b3529d (old id 2200139)
date added to LUP
2011-11-09 13:56:55
date last changed
2017-11-12 03:00:35
@article{d80946ac-7a9a-49bf-b577-344de4b3529d,
  abstract     = {Because the maintenance of proper developmental temperatures during avian incubation is costly to parents, embryos of many species experience pronounced variation in incubation temperature. However, the effects of such temperature variation on nestling development remain relatively unexplored. To investigate this, we artificially incubated wild blue tit (Cyanistes caeruleus L.) clutches at 35.0°, 36.5°, or 38.0°C for two-thirds of the incubation period. We returned clutches to their original nests before hatching and subsequently recorded nestling growth and resting metabolic rate. The length of the incubation period decreased with temperature, whereas hatching success increased. Nestlings from the lowest incubation temperature group had shorter tarsus lengths at 2 weeks of age, but body mass and wing length were not affected by temperature. In addition, nestlings from the lowest temperature group had a significantly higher resting metabolic rate compared with mid- and high-temperature nestlings, which may partly explain observed size differences between the groups. These findings suggest that nest microclimate can influence nestling phenotype, but whether observed differences carry over to later life-history stages remains unknown.},
  author       = {Nord, Andreas and Nilsson, Jan-Åke},
  issn         = {0003-0147},
  language     = {eng},
  number       = {5},
  pages        = {639--651},
  publisher    = {University of Chicago Press},
  series       = {American Naturalist},
  title        = {Incubation temperature affects growth and energy metabolism in blue tit nestlings.},
  url          = {http://dx.doi.org/10.1086/662172},
  volume       = {178},
  year         = {2011},
}