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Humoral immunocompetence correlates with date of egg-laying and reflects work load in female tree swallows

Hasselquist, Dennis LU ; Wasson, M F and Winkler, D W (2001) In Behavioral Ecology 12(1). p.93-97
Abstract
Because quality differences between individuals affect fitness, much research has attempted, with limited success, to relate physiological condition (e.g., body reserves), to differences in life history between individuals. Recently, it has been suggested that immunocompetence may reflect condition, and it thus may mediate variation in individual quality and reproductive performance and, ultimately, fitness. We measured humoral immunocompetence (HIC) by immunizing female tree swallows with a harmless antigen and measured the specific antibody responses in a novel enzyme-linked immunosorbent assay developed for passerine birds. HIC was strongly correlated with egg-laying date, an important determinant of reproductive success in female tree... (More)
Because quality differences between individuals affect fitness, much research has attempted, with limited success, to relate physiological condition (e.g., body reserves), to differences in life history between individuals. Recently, it has been suggested that immunocompetence may reflect condition, and it thus may mediate variation in individual quality and reproductive performance and, ultimately, fitness. We measured humoral immunocompetence (HIC) by immunizing female tree swallows with a harmless antigen and measured the specific antibody responses in a novel enzyme-linked immunosorbent assay developed for passerine birds. HIC was strongly correlated with egg-laying date, an important determinant of reproductive success in female tree swallows. We also investigated the effect of increased workload on HIC by manipulating female flight costs by clipping flight feathers. Clipped females had lower HIC than nonclipped females. These data suggest that HIC is a measure that may reflect phenotypic quality and also appears to be sensitive to increased workload in female tree swallows. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Behavioral Ecology
volume
12
issue
1
pages
93 - 97
publisher
Oxford University Press
external identifiers
  • scopus:0035139416
ISSN
1045-2249
language
English
LU publication?
yes
id
211f8983-8674-4f32-93b6-4b550a992c10 (old id 145913)
alternative location
http://beheco.oxfordjournals.org/cgi/content/full/12/1/93
date added to LUP
2007-06-26 07:46:02
date last changed
2018-02-25 03:27:19
@article{211f8983-8674-4f32-93b6-4b550a992c10,
  abstract     = {Because quality differences between individuals affect fitness, much research has attempted, with limited success, to relate physiological condition (e.g., body reserves), to differences in life history between individuals. Recently, it has been suggested that immunocompetence may reflect condition, and it thus may mediate variation in individual quality and reproductive performance and, ultimately, fitness. We measured humoral immunocompetence (HIC) by immunizing female tree swallows with a harmless antigen and measured the specific antibody responses in a novel enzyme-linked immunosorbent assay developed for passerine birds. HIC was strongly correlated with egg-laying date, an important determinant of reproductive success in female tree swallows. We also investigated the effect of increased workload on HIC by manipulating female flight costs by clipping flight feathers. Clipped females had lower HIC than nonclipped females. These data suggest that HIC is a measure that may reflect phenotypic quality and also appears to be sensitive to increased workload in female tree swallows.},
  author       = {Hasselquist, Dennis and Wasson, M F and Winkler, D W},
  issn         = {1045-2249},
  language     = {eng},
  number       = {1},
  pages        = {93--97},
  publisher    = {Oxford University Press},
  series       = {Behavioral Ecology},
  title        = {Humoral immunocompetence correlates with date of egg-laying and reflects work load in female tree swallows},
  volume       = {12},
  year         = {2001},
}