Subcolony characteristics and breeding performance in the chinstrap penguin Pygoscelis antarctica
Aims: Subcolonies of penguins differ markedly in physical characteristics and inbreeding success. Subcolony size is the best studied subcolony characteristic and has been suggested to be an important factor explaining the variation in reproductive success. Small subcolonies generally have lower bree...
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ftunivgent:oai:archive.ugent.be:1233205 2023-10-01T03:51:01+02:00 Subcolony characteristics and breeding performance in the chinstrap penguin Pygoscelis antarctica De Neve, Liesbeth Fargallo, Juan A Polo, Vicente Martins, José Soler, Manuel 2006 https://biblio.ugent.be/publication/1233205 http://hdl.handle.net/1854/LU-1233205 eng eng https://biblio.ugent.be/publication/1233205 http://hdl.handle.net/1854/LU-1233205 ARDEOLA ISSN: 0570-7358 Biology and Life Sciences hatching success hatching date PREDATION AGE SUCCESS BILL SIZE STONE THEFT colonial breeding MAINTENANCE penguins egg size flipper length NEST-SITE CHARACTERISTICS CHICK GROWTH nest placement nest size journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2006 ftunivgent 2023-09-06T22:25:51Z Aims: Subcolonies of penguins differ markedly in physical characteristics and inbreeding success. Subcolony size is the best studied subcolony characteristic and has been suggested to be an important factor explaining the variation in reproductive success. Small subcolonies generally have lower breeding success, probably because they suffer from worse environmental conditions. It is likely that lower quality individuals also occupy smaller subcolonies, which in turn affects breeding success. However, results are not always consistent, and other subcolony characteristics may mediate breeding success. In the present study, the relationship is investigated between physical subcolony characteristics (slope, isolation and size) and several variables indicative of individual quality and breeding success in the chinstrap penguin Pygoscelis antarctica. Location: The study was performed in the Vapour Col chinstrap penguin colony on Deception Island (South Shetlands Archipelago, 63 infinity 00'S, 60 infinity 40'W) during the austral 2002-03 breeding season. Methods: The slope, the degree of isolation and the size (number of nests) of 22 randomly selected subcolonies were measured. Variables indicating individual quality were considered in 10 nests of each subcolony: parental body size (bill length, bill depth, flipper length), nest size and egg size, and variables indicating breeding success: hatching date and hatching success. Results: Both isolated and sloped subcolonies were smaller in size, and were occupied by male parents with shorter bills and less bill depth respectively. Isolated subcolonies also showed a delayed hatching date and lower hatching success and females of more sloped subcolonies laid smaller eggs. Nest size was larger in isolated subcolonies and smaller in sloped subcolonies. Conclusions: This study indicates that physical characteristics of subcolonies, such as the degree of isolation and slope, rather than just size, affect breeding success of chinstrap penguins. It is also suggested that nest size ... Article in Journal/Newspaper Antarc* Antarctica Chinstrap penguin Deception Island Pygoscelis antarctica Ghent University Academic Bibliography Austral Deception Island ENVELOPE(-60.633,-60.633,-62.950,-62.950) Vapour Col ENVELOPE(-60.728,-60.728,-62.977,-62.977) |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Biology and Life Sciences hatching success hatching date PREDATION AGE SUCCESS BILL SIZE STONE THEFT colonial breeding MAINTENANCE penguins egg size flipper length NEST-SITE CHARACTERISTICS CHICK GROWTH nest placement nest size |
spellingShingle |
Biology and Life Sciences hatching success hatching date PREDATION AGE SUCCESS BILL SIZE STONE THEFT colonial breeding MAINTENANCE penguins egg size flipper length NEST-SITE CHARACTERISTICS CHICK GROWTH nest placement nest size De Neve, Liesbeth Fargallo, Juan A Polo, Vicente Martins, José Soler, Manuel Subcolony characteristics and breeding performance in the chinstrap penguin Pygoscelis antarctica |
topic_facet |
Biology and Life Sciences hatching success hatching date PREDATION AGE SUCCESS BILL SIZE STONE THEFT colonial breeding MAINTENANCE penguins egg size flipper length NEST-SITE CHARACTERISTICS CHICK GROWTH nest placement nest size |
description |
Aims: Subcolonies of penguins differ markedly in physical characteristics and inbreeding success. Subcolony size is the best studied subcolony characteristic and has been suggested to be an important factor explaining the variation in reproductive success. Small subcolonies generally have lower breeding success, probably because they suffer from worse environmental conditions. It is likely that lower quality individuals also occupy smaller subcolonies, which in turn affects breeding success. However, results are not always consistent, and other subcolony characteristics may mediate breeding success. In the present study, the relationship is investigated between physical subcolony characteristics (slope, isolation and size) and several variables indicative of individual quality and breeding success in the chinstrap penguin Pygoscelis antarctica. Location: The study was performed in the Vapour Col chinstrap penguin colony on Deception Island (South Shetlands Archipelago, 63 infinity 00'S, 60 infinity 40'W) during the austral 2002-03 breeding season. Methods: The slope, the degree of isolation and the size (number of nests) of 22 randomly selected subcolonies were measured. Variables indicating individual quality were considered in 10 nests of each subcolony: parental body size (bill length, bill depth, flipper length), nest size and egg size, and variables indicating breeding success: hatching date and hatching success. Results: Both isolated and sloped subcolonies were smaller in size, and were occupied by male parents with shorter bills and less bill depth respectively. Isolated subcolonies also showed a delayed hatching date and lower hatching success and females of more sloped subcolonies laid smaller eggs. Nest size was larger in isolated subcolonies and smaller in sloped subcolonies. Conclusions: This study indicates that physical characteristics of subcolonies, such as the degree of isolation and slope, rather than just size, affect breeding success of chinstrap penguins. It is also suggested that nest size ... |
format |
Article in Journal/Newspaper |
author |
De Neve, Liesbeth Fargallo, Juan A Polo, Vicente Martins, José Soler, Manuel |
author_facet |
De Neve, Liesbeth Fargallo, Juan A Polo, Vicente Martins, José Soler, Manuel |
author_sort |
De Neve, Liesbeth |
title |
Subcolony characteristics and breeding performance in the chinstrap penguin Pygoscelis antarctica |
title_short |
Subcolony characteristics and breeding performance in the chinstrap penguin Pygoscelis antarctica |
title_full |
Subcolony characteristics and breeding performance in the chinstrap penguin Pygoscelis antarctica |
title_fullStr |
Subcolony characteristics and breeding performance in the chinstrap penguin Pygoscelis antarctica |
title_full_unstemmed |
Subcolony characteristics and breeding performance in the chinstrap penguin Pygoscelis antarctica |
title_sort |
subcolony characteristics and breeding performance in the chinstrap penguin pygoscelis antarctica |
publishDate |
2006 |
url |
https://biblio.ugent.be/publication/1233205 http://hdl.handle.net/1854/LU-1233205 |
long_lat |
ENVELOPE(-60.633,-60.633,-62.950,-62.950) ENVELOPE(-60.728,-60.728,-62.977,-62.977) |
geographic |
Austral Deception Island Vapour Col |
geographic_facet |
Austral Deception Island Vapour Col |
genre |
Antarc* Antarctica Chinstrap penguin Deception Island Pygoscelis antarctica |
genre_facet |
Antarc* Antarctica Chinstrap penguin Deception Island Pygoscelis antarctica |
op_source |
ARDEOLA ISSN: 0570-7358 |
op_relation |
https://biblio.ugent.be/publication/1233205 http://hdl.handle.net/1854/LU-1233205 |
_version_ |
1778530572502564864 |