Data from: The pyriform egg of the Common Murre (Uria aalge) is more stable on sloping surfaces
The adaptive significance of avian egg shape is a long-standing problem in biology. For many years, it was widely believed that the pyriform shape of the Common Murre (Uria aalge) egg allowed it to either “spin like a top” or “roll in an arc,” thereby reducing its risk of rolling off the breeding le...
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2018
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Online Access: | https://doi.org/10.5061/dryad.gb90p1c.2 https://doi.org/10.5061/dryad.gb90p1c https://doi.org/10.5061/dryad.gb90p1c.1 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::bb26f8aa2330da5ed17697c4f8ac8c48 2023-05-15T13:12:15+02:00 Data from: The pyriform egg of the Common Murre (Uria aalge) is more stable on sloping surfaces Birkhead, Tim R. Thompson, Jamie E. Montgomerie, R. Montgomerie, Robert 2018-01-01 https://doi.org/10.5061/dryad.gb90p1c.2 https://doi.org/10.5061/dryad.gb90p1c https://doi.org/10.5061/dryad.gb90p1c.1 undefined unknown Dryad Digital Repository https://dx.doi.org/10.5061/dryad.gb90p1c.2 http://dx.doi.org/10.5061/dryad.gb90p1c https://dx.doi.org/10.5061/dryad.gb90p1c http://dx.doi.org/10.5061/dryad.gb90p1c.2 https://dx.doi.org/10.5061/dryad.gb90p1c.1 http://dx.doi.org/10.5061/dryad.gb90p1c.1 lic_creative-commons 10.5061/dryad.gb90p1c.2 10.5061/dryad.gb90p1c oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:125577 oai:easy.dans.knaw.nl:easy-dataset:125577 10.5061/dryad.gb90p1c.1 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:125574 oai:easy.dans.knaw.nl:easy-dataset:125574 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 egg shape birds seabirds natural selection Skomer Wales UK Holocene Uria alle Alca torda Life sciences medicine and health care (:tba) geo envir Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2018 fttriple https://doi.org/10.5061/dryad.gb90p1c.2 https://doi.org/10.5061/dryad.gb90p1c https://doi.org/10.5061/dryad.gb90p1c.1 https://doi.org/10.5061/DRYAD.GB90P1C 2023-01-22T17:22:31Z The adaptive significance of avian egg shape is a long-standing problem in biology. For many years, it was widely believed that the pyriform shape of the Common Murre (Uria aalge) egg allowed it to either “spin like a top” or “roll in an arc,” thereby reducing its risk of rolling off the breeding ledge. There is no evidence in support of either mechanism. Two recent alternative hypotheses suggest that a pyriform egg confers mechanical strength and minimizes the risk of dirt contamination of the blunt end. We present a new hypothesis: that the Common Murre egg's pyriform shape confers stability on the breeding ledge, thus reducing the chance that it will begin to roll. We tested this hypothesis by measuring the stability of Common Murre and Razorbill (Alca torda) eggs of different shapes on slopes of 20°, 30°, and 40° above the horizontal. Common Murre eggs were more stable, and easier to stabilize, than the more elliptical Razorbill eggs. Within Common Murre eggs, more pyriform eggs were more stable. From a fitness perspective, the stability of the Common Murre egg on a slope seems likely to confer an advantage and thus may be a strong force of natural selection favoring the pyriform shape. READMEstabilityRcodeR notebook used to generate the Statistical SupplementStatistical SupplementThis is the Rcode and output from that code for the statistical analyses reported in this paper.StatisticalSupplement.pdfComparing stability on different slopesThis is the dataset from slope trials done by Jamie Thompson (JET) alone, to assess his ability to stabilize Razorbill and Common Murre eggs of different shapes on flat, sandpaper covered slopes of 20°, 30° and 40° above the horizontal.stability.csvStatic slopes experiment comparing participantsThis is a dataset to compare the ability of 12 naive subjects with a potentially biased subject (Jamie E Thompson; JET) in their ability to balance Razorbill and Commmon Murre eggs on surfaces with different slopes.studentdata.csvData from moving slopes experimentThis is the dataset ... Dataset Alca torda Common Murre Razorbill Uria aalge uria Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
egg shape birds seabirds natural selection Skomer Wales UK Holocene Uria alle Alca torda Life sciences medicine and health care (:tba) geo envir |
spellingShingle |
egg shape birds seabirds natural selection Skomer Wales UK Holocene Uria alle Alca torda Life sciences medicine and health care (:tba) geo envir Birkhead, Tim R. Thompson, Jamie E. Montgomerie, R. Montgomerie, Robert Data from: The pyriform egg of the Common Murre (Uria aalge) is more stable on sloping surfaces |
topic_facet |
egg shape birds seabirds natural selection Skomer Wales UK Holocene Uria alle Alca torda Life sciences medicine and health care (:tba) geo envir |
description |
The adaptive significance of avian egg shape is a long-standing problem in biology. For many years, it was widely believed that the pyriform shape of the Common Murre (Uria aalge) egg allowed it to either “spin like a top” or “roll in an arc,” thereby reducing its risk of rolling off the breeding ledge. There is no evidence in support of either mechanism. Two recent alternative hypotheses suggest that a pyriform egg confers mechanical strength and minimizes the risk of dirt contamination of the blunt end. We present a new hypothesis: that the Common Murre egg's pyriform shape confers stability on the breeding ledge, thus reducing the chance that it will begin to roll. We tested this hypothesis by measuring the stability of Common Murre and Razorbill (Alca torda) eggs of different shapes on slopes of 20°, 30°, and 40° above the horizontal. Common Murre eggs were more stable, and easier to stabilize, than the more elliptical Razorbill eggs. Within Common Murre eggs, more pyriform eggs were more stable. From a fitness perspective, the stability of the Common Murre egg on a slope seems likely to confer an advantage and thus may be a strong force of natural selection favoring the pyriform shape. READMEstabilityRcodeR notebook used to generate the Statistical SupplementStatistical SupplementThis is the Rcode and output from that code for the statistical analyses reported in this paper.StatisticalSupplement.pdfComparing stability on different slopesThis is the dataset from slope trials done by Jamie Thompson (JET) alone, to assess his ability to stabilize Razorbill and Common Murre eggs of different shapes on flat, sandpaper covered slopes of 20°, 30° and 40° above the horizontal.stability.csvStatic slopes experiment comparing participantsThis is a dataset to compare the ability of 12 naive subjects with a potentially biased subject (Jamie E Thompson; JET) in their ability to balance Razorbill and Commmon Murre eggs on surfaces with different slopes.studentdata.csvData from moving slopes experimentThis is the dataset ... |
format |
Dataset |
author |
Birkhead, Tim R. Thompson, Jamie E. Montgomerie, R. Montgomerie, Robert |
author_facet |
Birkhead, Tim R. Thompson, Jamie E. Montgomerie, R. Montgomerie, Robert |
author_sort |
Birkhead, Tim R. |
title |
Data from: The pyriform egg of the Common Murre (Uria aalge) is more stable on sloping surfaces |
title_short |
Data from: The pyriform egg of the Common Murre (Uria aalge) is more stable on sloping surfaces |
title_full |
Data from: The pyriform egg of the Common Murre (Uria aalge) is more stable on sloping surfaces |
title_fullStr |
Data from: The pyriform egg of the Common Murre (Uria aalge) is more stable on sloping surfaces |
title_full_unstemmed |
Data from: The pyriform egg of the Common Murre (Uria aalge) is more stable on sloping surfaces |
title_sort |
data from: the pyriform egg of the common murre (uria aalge) is more stable on sloping surfaces |
publisher |
Dryad Digital Repository |
publishDate |
2018 |
url |
https://doi.org/10.5061/dryad.gb90p1c.2 https://doi.org/10.5061/dryad.gb90p1c https://doi.org/10.5061/dryad.gb90p1c.1 |
genre |
Alca torda Common Murre Razorbill Uria aalge uria |
genre_facet |
Alca torda Common Murre Razorbill Uria aalge uria |
op_source |
10.5061/dryad.gb90p1c.2 10.5061/dryad.gb90p1c oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:125577 oai:easy.dans.knaw.nl:easy-dataset:125577 10.5061/dryad.gb90p1c.1 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:125574 oai:easy.dans.knaw.nl:easy-dataset:125574 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 |
op_relation |
https://dx.doi.org/10.5061/dryad.gb90p1c.2 http://dx.doi.org/10.5061/dryad.gb90p1c https://dx.doi.org/10.5061/dryad.gb90p1c http://dx.doi.org/10.5061/dryad.gb90p1c.2 https://dx.doi.org/10.5061/dryad.gb90p1c.1 http://dx.doi.org/10.5061/dryad.gb90p1c.1 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.gb90p1c.2 https://doi.org/10.5061/dryad.gb90p1c https://doi.org/10.5061/dryad.gb90p1c.1 https://doi.org/10.5061/DRYAD.GB90P1C |
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