Data from: Individual repeatability in laying behaviour does not support the migratory carry-over effect hypothesis of egg-size dimorphism in Eudyptes penguins
Penguins of the genus Eudyptes are unique among birds in that their first-laid A-egg is 54–85% the mass of their second-laid B-egg. Although the degree of intra-clutch egg-size dimorphism varies greatly among the seven species of the genus, obligate brood reduction is typical of each, with most fled...
Main Author: | |
---|---|
Format: | Dataset |
Language: | English |
Published: |
Dryad
2015
|
Subjects: | |
Online Access: | https://doi.org/10.5061/dryad.d4196 |
id |
fttriple:oai:gotriple.eu:50|dedup_wf_001::8d1a385711bfdb18805f1e9f6269b261 |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:50|dedup_wf_001::8d1a385711bfdb18805f1e9f6269b261 2023-05-15T18:07:16+02:00 Data from: Individual repeatability in laying behaviour does not support the migratory carry-over effect hypothesis of egg-size dimorphism in Eudyptes penguins Morrison, Kyle W. 2015-01-01 https://doi.org/10.5061/dryad.d4196 en eng Dryad http://dx.doi.org/10.5061/dryad.d4196 https://dx.doi.org/10.5061/dryad.d4196 lic_creative-commons 10.5061/dryad.d4196 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:92120 oai:easy.dans.knaw.nl:easy-dataset:92120 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 egg-size dimorphism carry-over effect Eastern Rockhopper Penguin Eudyptes chrysocome filholi reproductive investment individual repeatability Holocene Life sciences medicine and health care Campbell Island New Zealand envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2015 fttriple https://doi.org/10.5061/dryad.d4196 2023-01-22T16:50:49Z Penguins of the genus Eudyptes are unique among birds in that their first-laid A-egg is 54–85% the mass of their second-laid B-egg. Although the degree of intra-clutch egg-size dimorphism varies greatly among the seven species of the genus, obligate brood reduction is typical of each, with most fledged chicks resulting from the larger B-egg. Many authors have speculated upon why Eudyptes penguins have evolved and maintained a highly dimorphic 2-egg clutch, and why it is the first-laid egg that is so much smaller than the second, but only recently has a testable, proximate mechanism been proposed. In most species of Eudyptes penguins females appear to initiate egg-formation at sea during return migration to breeding colonies. In macaroni penguins E. chrysolophus, females with a shorter pre-laying interval ashore (and thus presumably greater overlap between migration and egg-formation) lay more dimorphic eggs, suggesting a physiological conflict may constrain growth of the earlier-initiated A-egg. This migratory carry-over effect hypothesis (MCEH) was tested in eastern rockhopper penguins E. chrysocome filholi on Campbell Island, New Zealand, by recording the arrival and lay dates, body sizes, and egg masses of transponder-tagged females over two years. Females with longer pre-laying intervals laid less dimorphic clutches, as predicted by the MCEH. However, repeated measures of individual females revealed that within-individual variation in egg-size dimorphism between years was unrelated to within-individual variation in pre-laying interval. Egg masses, and to a lesser extent egg-size dimorphism, were highly repeatable traits related to body size and body mass. These results and a detailed consideration of the MCEH suggest that egg-size dimorphism in Eudyptes penguins is unlikely to be caused by a migratory carry-over effect. Morrison 2016 Eastern Rockhopper Penguin laying dataAll data used in Morrison 2016 (Journal of Avian Biology doi:10.1111_jav.00740).Morrison penguin lay data.csv Dataset Rockhopper penguin Unknown New Zealand Morrison ENVELOPE(-63.533,-63.533,-66.167,-66.167) Campbell Island ENVELOPE(169.500,169.500,-52.500,-52.500) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
egg-size dimorphism carry-over effect Eastern Rockhopper Penguin Eudyptes chrysocome filholi reproductive investment individual repeatability Holocene Life sciences medicine and health care Campbell Island New Zealand envir geo |
spellingShingle |
egg-size dimorphism carry-over effect Eastern Rockhopper Penguin Eudyptes chrysocome filholi reproductive investment individual repeatability Holocene Life sciences medicine and health care Campbell Island New Zealand envir geo Morrison, Kyle W. Data from: Individual repeatability in laying behaviour does not support the migratory carry-over effect hypothesis of egg-size dimorphism in Eudyptes penguins |
topic_facet |
egg-size dimorphism carry-over effect Eastern Rockhopper Penguin Eudyptes chrysocome filholi reproductive investment individual repeatability Holocene Life sciences medicine and health care Campbell Island New Zealand envir geo |
description |
Penguins of the genus Eudyptes are unique among birds in that their first-laid A-egg is 54–85% the mass of their second-laid B-egg. Although the degree of intra-clutch egg-size dimorphism varies greatly among the seven species of the genus, obligate brood reduction is typical of each, with most fledged chicks resulting from the larger B-egg. Many authors have speculated upon why Eudyptes penguins have evolved and maintained a highly dimorphic 2-egg clutch, and why it is the first-laid egg that is so much smaller than the second, but only recently has a testable, proximate mechanism been proposed. In most species of Eudyptes penguins females appear to initiate egg-formation at sea during return migration to breeding colonies. In macaroni penguins E. chrysolophus, females with a shorter pre-laying interval ashore (and thus presumably greater overlap between migration and egg-formation) lay more dimorphic eggs, suggesting a physiological conflict may constrain growth of the earlier-initiated A-egg. This migratory carry-over effect hypothesis (MCEH) was tested in eastern rockhopper penguins E. chrysocome filholi on Campbell Island, New Zealand, by recording the arrival and lay dates, body sizes, and egg masses of transponder-tagged females over two years. Females with longer pre-laying intervals laid less dimorphic clutches, as predicted by the MCEH. However, repeated measures of individual females revealed that within-individual variation in egg-size dimorphism between years was unrelated to within-individual variation in pre-laying interval. Egg masses, and to a lesser extent egg-size dimorphism, were highly repeatable traits related to body size and body mass. These results and a detailed consideration of the MCEH suggest that egg-size dimorphism in Eudyptes penguins is unlikely to be caused by a migratory carry-over effect. Morrison 2016 Eastern Rockhopper Penguin laying dataAll data used in Morrison 2016 (Journal of Avian Biology doi:10.1111_jav.00740).Morrison penguin lay data.csv |
format |
Dataset |
author |
Morrison, Kyle W. |
author_facet |
Morrison, Kyle W. |
author_sort |
Morrison, Kyle W. |
title |
Data from: Individual repeatability in laying behaviour does not support the migratory carry-over effect hypothesis of egg-size dimorphism in Eudyptes penguins |
title_short |
Data from: Individual repeatability in laying behaviour does not support the migratory carry-over effect hypothesis of egg-size dimorphism in Eudyptes penguins |
title_full |
Data from: Individual repeatability in laying behaviour does not support the migratory carry-over effect hypothesis of egg-size dimorphism in Eudyptes penguins |
title_fullStr |
Data from: Individual repeatability in laying behaviour does not support the migratory carry-over effect hypothesis of egg-size dimorphism in Eudyptes penguins |
title_full_unstemmed |
Data from: Individual repeatability in laying behaviour does not support the migratory carry-over effect hypothesis of egg-size dimorphism in Eudyptes penguins |
title_sort |
data from: individual repeatability in laying behaviour does not support the migratory carry-over effect hypothesis of egg-size dimorphism in eudyptes penguins |
publisher |
Dryad |
publishDate |
2015 |
url |
https://doi.org/10.5061/dryad.d4196 |
long_lat |
ENVELOPE(-63.533,-63.533,-66.167,-66.167) ENVELOPE(169.500,169.500,-52.500,-52.500) |
geographic |
New Zealand Morrison Campbell Island |
geographic_facet |
New Zealand Morrison Campbell Island |
genre |
Rockhopper penguin |
genre_facet |
Rockhopper penguin |
op_source |
10.5061/dryad.d4196 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:92120 oai:easy.dans.knaw.nl:easy-dataset:92120 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 |
op_relation |
http://dx.doi.org/10.5061/dryad.d4196 https://dx.doi.org/10.5061/dryad.d4196 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.d4196 |
_version_ |
1766179252805304320 |