Cost of reproduction in a long-lived bird: incubation effort reduces immune function and future reproduction
Life-history theory predicts that increased current reproductive effort should lead to a fitness cost. This cost of reproduction may be observed as reduced survival or future reproduction, and may be caused by temporal suppression of immune function in stressed or hard-working individuals. In birds,...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1599870 http://www.ncbi.nlm.nih.gov/pubmed/16024362 https://doi.org/10.1098/rspb.2005.3057 |
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ftpubmed:oai:pubmedcentral.nih.gov:1599870 2023-05-15T15:55:57+02:00 Cost of reproduction in a long-lived bird: incubation effort reduces immune function and future reproduction Hanssen, Sveinn Are Hasselquist, Dennis Folstad, Ivar Erikstad, Kjell Einar 2005-05-22 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1599870 http://www.ncbi.nlm.nih.gov/pubmed/16024362 https://doi.org/10.1098/rspb.2005.3057 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1599870 http://www.ncbi.nlm.nih.gov/pubmed/16024362 http://dx.doi.org/10.1098/rspb.2005.3057 © 2005 The Royal Society Research Article Text 2005 ftpubmed https://doi.org/10.1098/rspb.2005.3057 2013-08-31T08:17:29Z Life-history theory predicts that increased current reproductive effort should lead to a fitness cost. This cost of reproduction may be observed as reduced survival or future reproduction, and may be caused by temporal suppression of immune function in stressed or hard-working individuals. In birds, consideration of the costs of incubating eggs has largely been neglected in favour of the costs of brood rearing. We manipulated incubation demand in two breeding seasons (2000 and 2001) in female common eiders (Somateria mollissima) by creating clutches of three and six eggs (natural range 3–6 eggs). The common eider is a long-lived sea-duck where females do not eat during the incubation period. Mass loss increased and immune function (lymphocyte levels and specific antibody response to the non-pathogenic antigens diphtheria and tetanus toxoid) was reduced in females incubating large clutches. The increased incubation effort among females assigned to large incubation demand did not lead to adverse effects on current reproduction or return rate in the next breeding season. However, large incubation demand resulted in long-term fitness costs through reduced fecundity the year after manipulation. Our data show that in eiders, a long-lived species, the cost of high incubation demand is paid in the currency of reduced future fecundity, possibly mediated by reduced immune function. Text Common Eider Somateria mollissima PubMed Central (PMC) Proceedings of the Royal Society B: Biological Sciences 272 1567 1039 1046 |
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Research Article Hanssen, Sveinn Are Hasselquist, Dennis Folstad, Ivar Erikstad, Kjell Einar Cost of reproduction in a long-lived bird: incubation effort reduces immune function and future reproduction |
topic_facet |
Research Article |
description |
Life-history theory predicts that increased current reproductive effort should lead to a fitness cost. This cost of reproduction may be observed as reduced survival or future reproduction, and may be caused by temporal suppression of immune function in stressed or hard-working individuals. In birds, consideration of the costs of incubating eggs has largely been neglected in favour of the costs of brood rearing. We manipulated incubation demand in two breeding seasons (2000 and 2001) in female common eiders (Somateria mollissima) by creating clutches of three and six eggs (natural range 3–6 eggs). The common eider is a long-lived sea-duck where females do not eat during the incubation period. Mass loss increased and immune function (lymphocyte levels and specific antibody response to the non-pathogenic antigens diphtheria and tetanus toxoid) was reduced in females incubating large clutches. The increased incubation effort among females assigned to large incubation demand did not lead to adverse effects on current reproduction or return rate in the next breeding season. However, large incubation demand resulted in long-term fitness costs through reduced fecundity the year after manipulation. Our data show that in eiders, a long-lived species, the cost of high incubation demand is paid in the currency of reduced future fecundity, possibly mediated by reduced immune function. |
format |
Text |
author |
Hanssen, Sveinn Are Hasselquist, Dennis Folstad, Ivar Erikstad, Kjell Einar |
author_facet |
Hanssen, Sveinn Are Hasselquist, Dennis Folstad, Ivar Erikstad, Kjell Einar |
author_sort |
Hanssen, Sveinn Are |
title |
Cost of reproduction in a long-lived bird: incubation effort reduces immune function and future reproduction |
title_short |
Cost of reproduction in a long-lived bird: incubation effort reduces immune function and future reproduction |
title_full |
Cost of reproduction in a long-lived bird: incubation effort reduces immune function and future reproduction |
title_fullStr |
Cost of reproduction in a long-lived bird: incubation effort reduces immune function and future reproduction |
title_full_unstemmed |
Cost of reproduction in a long-lived bird: incubation effort reduces immune function and future reproduction |
title_sort |
cost of reproduction in a long-lived bird: incubation effort reduces immune function and future reproduction |
publisher |
The Royal Society |
publishDate |
2005 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1599870 http://www.ncbi.nlm.nih.gov/pubmed/16024362 https://doi.org/10.1098/rspb.2005.3057 |
genre |
Common Eider Somateria mollissima |
genre_facet |
Common Eider Somateria mollissima |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1599870 http://www.ncbi.nlm.nih.gov/pubmed/16024362 http://dx.doi.org/10.1098/rspb.2005.3057 |
op_rights |
© 2005 The Royal Society |
op_doi |
https://doi.org/10.1098/rspb.2005.3057 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
272 |
container_issue |
1567 |
container_start_page |
1039 |
op_container_end_page |
1046 |
_version_ |
1766391429827919872 |