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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crroyalsociety:10.1098/rspb.2005.3057 2024-09-30T14:33:51+00:00 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 http://dx.doi.org/10.1098/rspb.2005.3057 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2005.3057 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2005.3057 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Proceedings of the Royal Society B: Biological Sciences volume 272, issue 1567, page 1039-1046 ISSN 0962-8452 1471-2954 journal-article 2005 crroyalsociety https://doi.org/10.1098/rspb.2005.3057 2024-09-17T04:34:45Z 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. Article in Journal/Newspaper Common Eider Somateria mollissima The Royal Society Proceedings of the Royal Society B: Biological Sciences 272 1567 1039 1046 |
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Open Polar |
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The Royal Society |
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crroyalsociety |
language |
English |
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 |
Article in Journal/Newspaper |
author |
Hanssen, Sveinn Are Hasselquist, Dennis Folstad, Ivar Erikstad, Kjell Einar |
spellingShingle |
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 |
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://dx.doi.org/10.1098/rspb.2005.3057 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2005.3057 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2005.3057 |
genre |
Common Eider Somateria mollissima |
genre_facet |
Common Eider Somateria mollissima |
op_source |
Proceedings of the Royal Society B: Biological Sciences volume 272, issue 1567, page 1039-1046 ISSN 0962-8452 1471-2954 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
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 |
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1811637624792678400 |