Geographical variation in egg size dimorphism in rockhopper penguins ...
All crested penguins present a unique reversed hatching asynchrony: the larger second-laid egg (B-egg) hatches before the smaller first-laid egg (A-egg). Although both eggs often hatch, the A-chick generally dies of starvation within days after hatching. However, within rockhopper penguins, the popu...
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ftdatacite:10.22029/jlupub-197 2023-12-31T10:22:28+01:00 Geographical variation in egg size dimorphism in rockhopper penguins ... Demongin, Laurent Poisbleau, Maud Rey, Andrea Raya Schiavini, Adrian Quillfeldt, Petra Eens, Marcel Strange, Ian J. Justus Liebig University Giessen 2010 https://dx.doi.org/10.22029/jlupub-197 https://jlupub.ub.uni-giessen.de//handle/jlupub/250 en eng Universitätsbibliothek Gießen Creative Commons Attribution Non Commercial 2.0 Generic Namensnennung - Nicht kommerziell 2.0 International https://creativecommons.org/licenses/by-nc/2.0/legalcode cc-by-nc-2.0 Rockhopper penguin Egg dimorphism Geographical variation Chick survival ddc570 ddc590 JournalArticle article-journal ScholarlyArticle article 2010 ftdatacite https://doi.org/10.22029/jlupub-197 2023-12-01T11:44:15Z All crested penguins present a unique reversed hatching asynchrony: the larger second-laid egg (B-egg) hatches before the smaller first-laid egg (A-egg). Although both eggs often hatch, the A-chick generally dies of starvation within days after hatching. However, within rockhopper penguins, the population at the Falkland Islands is unique in that some birds manage to raise both chicks. Although it has been suggested that the egg size dimorphism between A- and B-eggs may explain how long both eggs and chicks survive, this hypothesis has never been explicitly tested. We expect that both eggs are retained longer in the less dimorphic clutches than in the more dimorphic ones. In this paper, we have compiled egg measurements for three rockhopper penguin species (Eudyptes chrysocome, E. filholi and E. moseleyi) in order to compare the intra-clutch egg size dimorphism among these species. Furthermore, we have collected new data to compare egg size dimorphism between two populations of E. chrysocome (Falkland ... Article in Journal/Newspaper Rockhopper penguin DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Rockhopper penguin Egg dimorphism Geographical variation Chick survival ddc570 ddc590 |
spellingShingle |
Rockhopper penguin Egg dimorphism Geographical variation Chick survival ddc570 ddc590 Demongin, Laurent Poisbleau, Maud Rey, Andrea Raya Schiavini, Adrian Quillfeldt, Petra Eens, Marcel Strange, Ian J. Justus Liebig University Giessen Geographical variation in egg size dimorphism in rockhopper penguins ... |
topic_facet |
Rockhopper penguin Egg dimorphism Geographical variation Chick survival ddc570 ddc590 |
description |
All crested penguins present a unique reversed hatching asynchrony: the larger second-laid egg (B-egg) hatches before the smaller first-laid egg (A-egg). Although both eggs often hatch, the A-chick generally dies of starvation within days after hatching. However, within rockhopper penguins, the population at the Falkland Islands is unique in that some birds manage to raise both chicks. Although it has been suggested that the egg size dimorphism between A- and B-eggs may explain how long both eggs and chicks survive, this hypothesis has never been explicitly tested. We expect that both eggs are retained longer in the less dimorphic clutches than in the more dimorphic ones. In this paper, we have compiled egg measurements for three rockhopper penguin species (Eudyptes chrysocome, E. filholi and E. moseleyi) in order to compare the intra-clutch egg size dimorphism among these species. Furthermore, we have collected new data to compare egg size dimorphism between two populations of E. chrysocome (Falkland ... |
format |
Article in Journal/Newspaper |
author |
Demongin, Laurent Poisbleau, Maud Rey, Andrea Raya Schiavini, Adrian Quillfeldt, Petra Eens, Marcel Strange, Ian J. Justus Liebig University Giessen |
author_facet |
Demongin, Laurent Poisbleau, Maud Rey, Andrea Raya Schiavini, Adrian Quillfeldt, Petra Eens, Marcel Strange, Ian J. Justus Liebig University Giessen |
author_sort |
Demongin, Laurent |
title |
Geographical variation in egg size dimorphism in rockhopper penguins ... |
title_short |
Geographical variation in egg size dimorphism in rockhopper penguins ... |
title_full |
Geographical variation in egg size dimorphism in rockhopper penguins ... |
title_fullStr |
Geographical variation in egg size dimorphism in rockhopper penguins ... |
title_full_unstemmed |
Geographical variation in egg size dimorphism in rockhopper penguins ... |
title_sort |
geographical variation in egg size dimorphism in rockhopper penguins ... |
publisher |
Universitätsbibliothek Gießen |
publishDate |
2010 |
url |
https://dx.doi.org/10.22029/jlupub-197 https://jlupub.ub.uni-giessen.de//handle/jlupub/250 |
genre |
Rockhopper penguin |
genre_facet |
Rockhopper penguin |
op_rights |
Creative Commons Attribution Non Commercial 2.0 Generic Namensnennung - Nicht kommerziell 2.0 International https://creativecommons.org/licenses/by-nc/2.0/legalcode cc-by-nc-2.0 |
op_doi |
https://doi.org/10.22029/jlupub-197 |
_version_ |
1786833583576449024 |