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Social competition, corticosterone and survival in female lizard morphs

Comendant, T; Sinervo, B; Svensson, Erik LU and Wingfield, J (2003) In Journal of Evolutionary Biology 16(5). p.948-955
Abstract
We examined the selective consequences of variation in behaviour and endocrine physiology in two female throat-colour morphs of the lizard, Uta stansburiana in the wild. Female morphs differed in home-range distribution patterns and corticosterone levels in relation to the density and frequency of their female neighbours. Levels of plasma corticosterone of yellow-throated females increased with increased density of both morphs. in contrast, orange-throated females had reduced levels of corticosterone in response to increased density of orange females. Additionally, females with lower corticosterone survived poorly, suggesting that social interactions and high local densities of orange females may be potentially costly for orange females.... (More)
We examined the selective consequences of variation in behaviour and endocrine physiology in two female throat-colour morphs of the lizard, Uta stansburiana in the wild. Female morphs differed in home-range distribution patterns and corticosterone levels in relation to the density and frequency of their female neighbours. Levels of plasma corticosterone of yellow-throated females increased with increased density of both morphs. in contrast, orange-throated females had reduced levels of corticosterone in response to increased density of orange females. Additionally, females with lower corticosterone survived poorly, suggesting that social interactions and high local densities of orange females may be potentially costly for orange females. These results are consistent with decreased fitness effects and suppression of immune function previously reported for orange female morphs surrounded by more orange neighbours. These correlations, in conjunction with previous work in this system, indicate that corticosterone is likely to be an important physiological mechanism regulating female fitness in nature. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Evolutionary Biology
volume
16
issue
5
pages
948 - 955
publisher
John Wiley & Sons
external identifiers
  • wos:000185203300018
  • pmid:14635910
  • scopus:0042740672
ISSN
1420-9101
DOI
10.1046/j.1420-9101.2003.00598.x
language
English
LU publication?
yes
id
2e9df4e2-5ccf-476b-a94b-42de021bbf69 (old id 137173)
date added to LUP
2007-06-25 11:45:23
date last changed
2018-02-18 03:39:49
@article{2e9df4e2-5ccf-476b-a94b-42de021bbf69,
  abstract     = {We examined the selective consequences of variation in behaviour and endocrine physiology in two female throat-colour morphs of the lizard, Uta stansburiana in the wild. Female morphs differed in home-range distribution patterns and corticosterone levels in relation to the density and frequency of their female neighbours. Levels of plasma corticosterone of yellow-throated females increased with increased density of both morphs. in contrast, orange-throated females had reduced levels of corticosterone in response to increased density of orange females. Additionally, females with lower corticosterone survived poorly, suggesting that social interactions and high local densities of orange females may be potentially costly for orange females. These results are consistent with decreased fitness effects and suppression of immune function previously reported for orange female morphs surrounded by more orange neighbours. These correlations, in conjunction with previous work in this system, indicate that corticosterone is likely to be an important physiological mechanism regulating female fitness in nature.},
  author       = {Comendant, T and Sinervo, B and Svensson, Erik and Wingfield, J},
  issn         = {1420-9101},
  language     = {eng},
  number       = {5},
  pages        = {948--955},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Evolutionary Biology},
  title        = {Social competition, corticosterone and survival in female lizard morphs},
  url          = {http://dx.doi.org/10.1046/j.1420-9101.2003.00598.x},
  volume       = {16},
  year         = {2003},
}