Parents are a drag: long-lived birds share the cost of increased foraging effort with their offspring, but males pass on more of the costs than females.
Life history theory predicts that parents will balance benefits from investment in current offspring against benefits from future reproductive investments. Long-lived organisms are therefore less likely to increase parental effort when environmental conditions deteriorate. To investigate the effect...
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Online Access: | https://doi.org/10.1371/journal.pone.0054594 https://doaj.org/article/9afb6270779b4b66905be7e83978bd85 |
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ftdoajarticles:oai:doaj.org/article:9afb6270779b4b66905be7e83978bd85 2023-05-15T18:41:33+02:00 Parents are a drag: long-lived birds share the cost of increased foraging effort with their offspring, but males pass on more of the costs than females. Shoshanah R Jacobs Kyle Hamish Elliott Anthony J Gaston 2013-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0054594 https://doaj.org/article/9afb6270779b4b66905be7e83978bd85 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC3559872?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0054594 https://doaj.org/article/9afb6270779b4b66905be7e83978bd85 PLoS ONE, Vol 8, Iss 1, p e54594 (2013) Medicine R Science Q article 2013 ftdoajarticles https://doi.org/10.1371/journal.pone.0054594 2022-12-30T22:19:09Z Life history theory predicts that parents will balance benefits from investment in current offspring against benefits from future reproductive investments. Long-lived organisms are therefore less likely to increase parental effort when environmental conditions deteriorate. To investigate the effect of decreased foraging capacity on parental behaviour of long-lived monogamous seabirds, we experimentally increased energy costs for chick-rearing thick-billed murres (Uria lomvia). Handicapped birds had lighter chicks and lower provisioning rates, supporting the prediction that long-lived animals would pass some of the costs of impaired foraging ability on to their offspring. Nonetheless, handicapped birds spent less time underwater, had longer inter-dive surface intervals, had lower body mass, showed lower resighting probabilities in subsequent years and consumed fewer risky prey items. Corticosterone levels were similar between control and handicapped birds. Apparently, adults shared some of the costs of impaired foraging, but those costs were not measurable in all metrics. Handicapped males had higher plasma neutral lipid concentrations (higher energy mobilisation) and their chicks exhibited lower growth rates than handicapped females, suggesting different sex-specific investment strategies. Unlike other studies of auks, partners did not compensate for handicapping, despite good foraging conditions for unhandicapped birds. In conclusion, parental murres and their offspring shared the costs of experimentally increased foraging constraints, with females investing more than males. Article in Journal/Newspaper Uria lomvia uria Directory of Open Access Journals: DOAJ Articles PLoS ONE 8 1 e54594 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
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English |
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Medicine R Science Q |
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Medicine R Science Q Shoshanah R Jacobs Kyle Hamish Elliott Anthony J Gaston Parents are a drag: long-lived birds share the cost of increased foraging effort with their offspring, but males pass on more of the costs than females. |
topic_facet |
Medicine R Science Q |
description |
Life history theory predicts that parents will balance benefits from investment in current offspring against benefits from future reproductive investments. Long-lived organisms are therefore less likely to increase parental effort when environmental conditions deteriorate. To investigate the effect of decreased foraging capacity on parental behaviour of long-lived monogamous seabirds, we experimentally increased energy costs for chick-rearing thick-billed murres (Uria lomvia). Handicapped birds had lighter chicks and lower provisioning rates, supporting the prediction that long-lived animals would pass some of the costs of impaired foraging ability on to their offspring. Nonetheless, handicapped birds spent less time underwater, had longer inter-dive surface intervals, had lower body mass, showed lower resighting probabilities in subsequent years and consumed fewer risky prey items. Corticosterone levels were similar between control and handicapped birds. Apparently, adults shared some of the costs of impaired foraging, but those costs were not measurable in all metrics. Handicapped males had higher plasma neutral lipid concentrations (higher energy mobilisation) and their chicks exhibited lower growth rates than handicapped females, suggesting different sex-specific investment strategies. Unlike other studies of auks, partners did not compensate for handicapping, despite good foraging conditions for unhandicapped birds. In conclusion, parental murres and their offspring shared the costs of experimentally increased foraging constraints, with females investing more than males. |
format |
Article in Journal/Newspaper |
author |
Shoshanah R Jacobs Kyle Hamish Elliott Anthony J Gaston |
author_facet |
Shoshanah R Jacobs Kyle Hamish Elliott Anthony J Gaston |
author_sort |
Shoshanah R Jacobs |
title |
Parents are a drag: long-lived birds share the cost of increased foraging effort with their offspring, but males pass on more of the costs than females. |
title_short |
Parents are a drag: long-lived birds share the cost of increased foraging effort with their offspring, but males pass on more of the costs than females. |
title_full |
Parents are a drag: long-lived birds share the cost of increased foraging effort with their offspring, but males pass on more of the costs than females. |
title_fullStr |
Parents are a drag: long-lived birds share the cost of increased foraging effort with their offspring, but males pass on more of the costs than females. |
title_full_unstemmed |
Parents are a drag: long-lived birds share the cost of increased foraging effort with their offspring, but males pass on more of the costs than females. |
title_sort |
parents are a drag: long-lived birds share the cost of increased foraging effort with their offspring, but males pass on more of the costs than females. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2013 |
url |
https://doi.org/10.1371/journal.pone.0054594 https://doaj.org/article/9afb6270779b4b66905be7e83978bd85 |
genre |
Uria lomvia uria |
genre_facet |
Uria lomvia uria |
op_source |
PLoS ONE, Vol 8, Iss 1, p e54594 (2013) |
op_relation |
http://europepmc.org/articles/PMC3559872?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0054594 https://doaj.org/article/9afb6270779b4b66905be7e83978bd85 |
op_doi |
https://doi.org/10.1371/journal.pone.0054594 |
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PLoS ONE |
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8 |
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container_start_page |
e54594 |
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