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Investment in a sexual signal results in reduced survival under extreme conditions in the male great tit (Parus major)

Moore, Fhionna R.; Cirule, Dina; Kivleniece, Inese; Vrublevska, Jolanta; Rantala, Markus J.; Sild, Elin LU ; Sepp, Tuul; Horak, Peeter; Krama, Tatjana and Krams, Indrikis (2015) In Behavioral Ecology and Sociobiology 69(1). p.151-158
Abstract
Here, we tested for an ecologically valid cost to secondary sexual trait expression in the male great tit (Parus major). We compared the breast stripe area of a sample of males who survived extremely low night time temperatures with a sample who did not survive. Breast stripe area was significantly smaller in surviving males, suggesting a real cost of signalling in terms of survival. The relationship between breast stripe area and survival was moderated by the effects of body condition: Males with larger breast stripes were in poorer condition and hence suffered increased mortality. Finally, we tested for relationships between breast stripe area and body condition, and tarsus asymmetry and immunological parameters (Brucella abortus... (More)
Here, we tested for an ecologically valid cost to secondary sexual trait expression in the male great tit (Parus major). We compared the breast stripe area of a sample of males who survived extremely low night time temperatures with a sample who did not survive. Breast stripe area was significantly smaller in surviving males, suggesting a real cost of signalling in terms of survival. The relationship between breast stripe area and survival was moderated by the effects of body condition: Males with larger breast stripes were in poorer condition and hence suffered increased mortality. Finally, we tested for relationships between breast stripe area and body condition, and tarsus asymmetry and immunological parameters (Brucella abortus antibody count, heterophil to lymphocyte ratio, eosinophil count, monocyte count) in surviving males. Only eosinophil count was related to breast stripe area. Our results suggest a survival cost to investment in sexual signals, such that males who invest somatic resources in social signalling risk increased mortality under extreme environmental conditions. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Great tit, Tradeoffs, Sexually selected trait, Survival, Immune function
in
Behavioral Ecology and Sociobiology
volume
69
issue
1
pages
151 - 158
publisher
Springer
external identifiers
  • wos:000347151400015
  • scopus:84920100366
ISSN
1432-0762
DOI
10.1007/s00265-014-1828-2
language
English
LU publication?
yes
id
fdb8bb1d-a024-4cf0-a725-08bf53847019 (old id 5085120)
date added to LUP
2015-02-26 11:54:27
date last changed
2017-07-02 04:09:03
@article{fdb8bb1d-a024-4cf0-a725-08bf53847019,
  abstract     = {Here, we tested for an ecologically valid cost to secondary sexual trait expression in the male great tit (Parus major). We compared the breast stripe area of a sample of males who survived extremely low night time temperatures with a sample who did not survive. Breast stripe area was significantly smaller in surviving males, suggesting a real cost of signalling in terms of survival. The relationship between breast stripe area and survival was moderated by the effects of body condition: Males with larger breast stripes were in poorer condition and hence suffered increased mortality. Finally, we tested for relationships between breast stripe area and body condition, and tarsus asymmetry and immunological parameters (Brucella abortus antibody count, heterophil to lymphocyte ratio, eosinophil count, monocyte count) in surviving males. Only eosinophil count was related to breast stripe area. Our results suggest a survival cost to investment in sexual signals, such that males who invest somatic resources in social signalling risk increased mortality under extreme environmental conditions.},
  author       = {Moore, Fhionna R. and Cirule, Dina and Kivleniece, Inese and Vrublevska, Jolanta and Rantala, Markus J. and Sild, Elin and Sepp, Tuul and Horak, Peeter and Krama, Tatjana and Krams, Indrikis},
  issn         = {1432-0762},
  keyword      = {Great tit,Tradeoffs,Sexually selected trait,Survival,Immune function},
  language     = {eng},
  number       = {1},
  pages        = {151--158},
  publisher    = {Springer},
  series       = {Behavioral Ecology and Sociobiology},
  title        = {Investment in a sexual signal results in reduced survival under extreme conditions in the male great tit (Parus major)},
  url          = {http://dx.doi.org/10.1007/s00265-014-1828-2},
  volume       = {69},
  year         = {2015},
}