Is mass loss in Brünnich's guillemots Uria lomvia an adaptation for improved flight performance or improved dive performance?
Breeding Brünnich's guillemots Uria lomvia show stepwise mass loss at the time of hatch. This mass loss has usually been explained as an adaptation to reduce the cost of flight during the chick‐rearing period because flight time increases during that period. It is possible, however, that mass l...
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Online Access: | http://dx.doi.org/10.1111/j.1600-048x.2008.04316.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-048X.2008.04316.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-048X.2008.04316.x |
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crwiley:10.1111/j.1600-048x.2008.04316.x 2023-12-03T10:21:13+01:00 Is mass loss in Brünnich's guillemots Uria lomvia an adaptation for improved flight performance or improved dive performance? Elliott, Kyle H. Jacobs, Shoshanah R. Ringrose, Julian Gaston, Anthony J. Davoren, Gail K. 2008 http://dx.doi.org/10.1111/j.1600-048x.2008.04316.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-048X.2008.04316.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-048X.2008.04316.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Avian Biology volume 39, issue 6, page 619-628 ISSN 0908-8857 1600-048X Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2008 crwiley https://doi.org/10.1111/j.1600-048x.2008.04316.x 2023-11-09T13:57:38Z Breeding Brünnich's guillemots Uria lomvia show stepwise mass loss at the time of hatch. This mass loss has usually been explained as an adaptation to reduce the cost of flight during the chick‐rearing period because flight time increases during that period. It is possible, however, that mass loss also increases dive performance during the chick‐rearing period because time spent diving also increases during that period. Reduced mass could reduce basal metabolic rate or costs associated with buoyancy and therefore increase aerobic dive limit. To examine the role of mass loss in dive behavior, we attached time‐depth‐temperature recorders for 24–48 h to chick‐rearing and incubating Brünnich's guillemots at Coats Island, Nunavut (2005: n=45, 2006: n=40), and recorded body mass before and after each deployment. There was no relationship between mass and dive duration during either incubation or chick‐rearing. Seventeen of the birds we sampled during incubation were resampled during chick‐rearing. For this group, dive duration increased with mass loss between incubation and chick‐rearing (r 2 =0.67–0.75). Mass loss occurred through reductions in metabolically‐active tissues (liver, bladder) and buoyant tissues (lipids) although muscle and gut mass did not change. Despite the large change in lipids, buoyancy only changed by 0.1%, and mass loss therefore did not have much effect on costs associated with buoyancy. Nonetheless, surface pause duration for a given dive depth decreased during chick‐rearing, supporting the idea that reduced mass led to increased aerobic dive limit through reduced metabolic rate and inertial costs; oxygen stores did not increase. We also attached neutrally (n=9) and negatively (n=11) buoyant handicaps to the legs of adults to assess the effect of artificial mass increases on time budgets. Artificially increasing mass decreased total time spent diving but did not change time spent flying. There was no change in shift length between incubation and chick‐rearing, and therefore no support for the ... Article in Journal/Newspaper Coats Island Nunavut Uria lomvia uria Wiley Online Library (via Crossref) Nunavut Coats Island ENVELOPE(-82.974,-82.974,62.620,62.620) Journal of Avian Biology 39 6 619 628 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Elliott, Kyle H. Jacobs, Shoshanah R. Ringrose, Julian Gaston, Anthony J. Davoren, Gail K. Is mass loss in Brünnich's guillemots Uria lomvia an adaptation for improved flight performance or improved dive performance? |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Breeding Brünnich's guillemots Uria lomvia show stepwise mass loss at the time of hatch. This mass loss has usually been explained as an adaptation to reduce the cost of flight during the chick‐rearing period because flight time increases during that period. It is possible, however, that mass loss also increases dive performance during the chick‐rearing period because time spent diving also increases during that period. Reduced mass could reduce basal metabolic rate or costs associated with buoyancy and therefore increase aerobic dive limit. To examine the role of mass loss in dive behavior, we attached time‐depth‐temperature recorders for 24–48 h to chick‐rearing and incubating Brünnich's guillemots at Coats Island, Nunavut (2005: n=45, 2006: n=40), and recorded body mass before and after each deployment. There was no relationship between mass and dive duration during either incubation or chick‐rearing. Seventeen of the birds we sampled during incubation were resampled during chick‐rearing. For this group, dive duration increased with mass loss between incubation and chick‐rearing (r 2 =0.67–0.75). Mass loss occurred through reductions in metabolically‐active tissues (liver, bladder) and buoyant tissues (lipids) although muscle and gut mass did not change. Despite the large change in lipids, buoyancy only changed by 0.1%, and mass loss therefore did not have much effect on costs associated with buoyancy. Nonetheless, surface pause duration for a given dive depth decreased during chick‐rearing, supporting the idea that reduced mass led to increased aerobic dive limit through reduced metabolic rate and inertial costs; oxygen stores did not increase. We also attached neutrally (n=9) and negatively (n=11) buoyant handicaps to the legs of adults to assess the effect of artificial mass increases on time budgets. Artificially increasing mass decreased total time spent diving but did not change time spent flying. There was no change in shift length between incubation and chick‐rearing, and therefore no support for the ... |
format |
Article in Journal/Newspaper |
author |
Elliott, Kyle H. Jacobs, Shoshanah R. Ringrose, Julian Gaston, Anthony J. Davoren, Gail K. |
author_facet |
Elliott, Kyle H. Jacobs, Shoshanah R. Ringrose, Julian Gaston, Anthony J. Davoren, Gail K. |
author_sort |
Elliott, Kyle H. |
title |
Is mass loss in Brünnich's guillemots Uria lomvia an adaptation for improved flight performance or improved dive performance? |
title_short |
Is mass loss in Brünnich's guillemots Uria lomvia an adaptation for improved flight performance or improved dive performance? |
title_full |
Is mass loss in Brünnich's guillemots Uria lomvia an adaptation for improved flight performance or improved dive performance? |
title_fullStr |
Is mass loss in Brünnich's guillemots Uria lomvia an adaptation for improved flight performance or improved dive performance? |
title_full_unstemmed |
Is mass loss in Brünnich's guillemots Uria lomvia an adaptation for improved flight performance or improved dive performance? |
title_sort |
is mass loss in brünnich's guillemots uria lomvia an adaptation for improved flight performance or improved dive performance? |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1111/j.1600-048x.2008.04316.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-048X.2008.04316.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-048X.2008.04316.x |
long_lat |
ENVELOPE(-82.974,-82.974,62.620,62.620) |
geographic |
Nunavut Coats Island |
geographic_facet |
Nunavut Coats Island |
genre |
Coats Island Nunavut Uria lomvia uria |
genre_facet |
Coats Island Nunavut Uria lomvia uria |
op_source |
Journal of Avian Biology volume 39, issue 6, page 619-628 ISSN 0908-8857 1600-048X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1600-048x.2008.04316.x |
container_title |
Journal of Avian Biology |
container_volume |
39 |
container_issue |
6 |
container_start_page |
619 |
op_container_end_page |
628 |
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1784268793953910784 |