Data from: Two eggs, two different constraints: a potential explanation for the puzzling intra-clutch egg size dimorphism in Eudyptes penguins
Phenotypic plasticity and phenotypic stability are major components of the adaptive evolution of organisms to environmental variation. The invariant two-egg clutch size of Eudyptes penguins has recently been proposed to be a unique example of a maladaptive phenotypic stability, while their egg mass...
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Online Access: | https://doi.org/10.5061/dryad.7nr70 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::384e872ae8ba30abf13e1ab7fc46ae73 2023-05-15T18:25:54+02:00 Data from: Two eggs, two different constraints: a potential explanation for the puzzling intra-clutch egg size dimorphism in Eudyptes penguins Poisbleau, Maud Dehnhard, Nina Demongin, Laurent Quillfeldt, Petra Eens, Marcel 2016-05-19 https://doi.org/10.5061/dryad.7nr70 en eng Dryad http://dx.doi.org/10.5061/dryad.7nr70 https://dx.doi.org/10.5061/dryad.7nr70 lic_creative-commons 10.5061/dryad.7nr70 oai:easy.dans.knaw.nl:easy-dataset:89545 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:89545 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c Body reserves maternal investment egg composition Eudyptes chrysocome penguins Constraints Settlement colony (51°43'S-61°17'W) New Island Falkland/Malvinas Islands South Atlantic Southern Ocean Life sciences medicine and health care envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2016 fttriple https://doi.org/10.5061/dryad.7nr70 2023-01-22T17:22:36Z Phenotypic plasticity and phenotypic stability are major components of the adaptive evolution of organisms to environmental variation. The invariant two-egg clutch size of Eudyptes penguins has recently been proposed to be a unique example of a maladaptive phenotypic stability, while their egg mass is a plastic trait. We tested whether this phenotypic plasticity during reproduction might result from constraints imposed by migration (migratory carry-over effect) and breeding (due to the depletion of female body reserves). For the first time, we examined whether these constraints differ between eggs within clutches and between egg components (yolk and albumen). The interval between colony return and clutch initiation positively influenced the yolk mass, the albumen mass, and the subsequent total egg mass of first-laid eggs. This time interval had only a slight negative influence on the yolk mass of second-laid eggs and no influence on their albumen and subsequent total masses. For both eggs, female body mass at laying positively influenced albumen and total egg masses. Female investment into the entire clutch was not related to the time in the colony before laying but increased with female body mass. These novel results suggest that the unique intraclutch egg size dimorphism exhibited in Eudyptes penguins, with first-laid eggs being consistently smaller than second-laid eggs, might be due to a combination of constraints: a migratory carry-over effect on the first-laid egg and a body reserve depletion effect on the second-laid egg. Both these constraints might explain why the timing of reproduction, especially egg formation, is narrow in migratory capital breeders. Poisbleau et al. 2015 E&E BDDOriginal data collected in the field on females and eggs. Dataset Southern Ocean Unknown Southern Ocean |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Body reserves maternal investment egg composition Eudyptes chrysocome penguins Constraints Settlement colony (51°43'S-61°17'W) New Island Falkland/Malvinas Islands South Atlantic Southern Ocean Life sciences medicine and health care envir geo |
spellingShingle |
Body reserves maternal investment egg composition Eudyptes chrysocome penguins Constraints Settlement colony (51°43'S-61°17'W) New Island Falkland/Malvinas Islands South Atlantic Southern Ocean Life sciences medicine and health care envir geo Poisbleau, Maud Dehnhard, Nina Demongin, Laurent Quillfeldt, Petra Eens, Marcel Data from: Two eggs, two different constraints: a potential explanation for the puzzling intra-clutch egg size dimorphism in Eudyptes penguins |
topic_facet |
Body reserves maternal investment egg composition Eudyptes chrysocome penguins Constraints Settlement colony (51°43'S-61°17'W) New Island Falkland/Malvinas Islands South Atlantic Southern Ocean Life sciences medicine and health care envir geo |
description |
Phenotypic plasticity and phenotypic stability are major components of the adaptive evolution of organisms to environmental variation. The invariant two-egg clutch size of Eudyptes penguins has recently been proposed to be a unique example of a maladaptive phenotypic stability, while their egg mass is a plastic trait. We tested whether this phenotypic plasticity during reproduction might result from constraints imposed by migration (migratory carry-over effect) and breeding (due to the depletion of female body reserves). For the first time, we examined whether these constraints differ between eggs within clutches and between egg components (yolk and albumen). The interval between colony return and clutch initiation positively influenced the yolk mass, the albumen mass, and the subsequent total egg mass of first-laid eggs. This time interval had only a slight negative influence on the yolk mass of second-laid eggs and no influence on their albumen and subsequent total masses. For both eggs, female body mass at laying positively influenced albumen and total egg masses. Female investment into the entire clutch was not related to the time in the colony before laying but increased with female body mass. These novel results suggest that the unique intraclutch egg size dimorphism exhibited in Eudyptes penguins, with first-laid eggs being consistently smaller than second-laid eggs, might be due to a combination of constraints: a migratory carry-over effect on the first-laid egg and a body reserve depletion effect on the second-laid egg. Both these constraints might explain why the timing of reproduction, especially egg formation, is narrow in migratory capital breeders. Poisbleau et al. 2015 E&E BDDOriginal data collected in the field on females and eggs. |
format |
Dataset |
author |
Poisbleau, Maud Dehnhard, Nina Demongin, Laurent Quillfeldt, Petra Eens, Marcel |
author_facet |
Poisbleau, Maud Dehnhard, Nina Demongin, Laurent Quillfeldt, Petra Eens, Marcel |
author_sort |
Poisbleau, Maud |
title |
Data from: Two eggs, two different constraints: a potential explanation for the puzzling intra-clutch egg size dimorphism in Eudyptes penguins |
title_short |
Data from: Two eggs, two different constraints: a potential explanation for the puzzling intra-clutch egg size dimorphism in Eudyptes penguins |
title_full |
Data from: Two eggs, two different constraints: a potential explanation for the puzzling intra-clutch egg size dimorphism in Eudyptes penguins |
title_fullStr |
Data from: Two eggs, two different constraints: a potential explanation for the puzzling intra-clutch egg size dimorphism in Eudyptes penguins |
title_full_unstemmed |
Data from: Two eggs, two different constraints: a potential explanation for the puzzling intra-clutch egg size dimorphism in Eudyptes penguins |
title_sort |
data from: two eggs, two different constraints: a potential explanation for the puzzling intra-clutch egg size dimorphism in eudyptes penguins |
publisher |
Dryad |
publishDate |
2016 |
url |
https://doi.org/10.5061/dryad.7nr70 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
10.5061/dryad.7nr70 oai:easy.dans.knaw.nl:easy-dataset:89545 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:89545 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c |
op_relation |
http://dx.doi.org/10.5061/dryad.7nr70 https://dx.doi.org/10.5061/dryad.7nr70 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.7nr70 |
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1766207616731578368 |