Causal and functional correlates of brood amalgamation in the chinstrap penguin Pygoscelis antarctica : parental decision and adult aggressiveness
Despite the high number of species in which creching behaviour has been analysed, the factors determining brood desertion and chick aggregations remain relatively poorly understood. We analysed cre- ching behaviour of chinstrap penguins (Pygoscelis ant- arctica) to test whether: (1) timing of chick...
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ftcsic:oai:digital.csic.es:10261/47030 2024-02-11T09:58:39+01:00 Causal and functional correlates of brood amalgamation in the chinstrap penguin Pygoscelis antarctica : parental decision and adult aggressiveness Penteriani, Vincenzo Viñuela, Javier Belliure, Josabel Bustamante, Javier Ferrer, Miguel 2003 http://hdl.handle.net/10261/47030 https://doi.org/10.1007/s00300-003-0517-9 en eng Springer http://www.springerlink.com/content/pbn33qym16k1xhqq/fulltext.pdf Polar Biol (2003) 26: 538–544 http://hdl.handle.net/10261/47030 doi:10.1007/s00300-003-0517-9 open artículo http://purl.org/coar/resource_type/c_6501 2003 ftcsic https://doi.org/10.1007/s00300-003-0517-9 2024-01-16T09:36:41Z Despite the high number of species in which creching behaviour has been analysed, the factors determining brood desertion and chick aggregations remain relatively poorly understood. We analysed cre- ching behaviour of chinstrap penguins (Pygoscelis ant- arctica) to test whether: (1) timing of chick aggregations was mainly determined by the growth stage of chicks or by adult physiological constraints; (2) the creche acts as a protective mechanism against predation or as a defence against conspecific adult aggressiveness. Our results show that chick desertion was not related to chick growth rate and was driven primarily by a parental decision, determined by adult physical constraints imposed by moulting needs and the short breeding sea- son in Antarctica. With respect to the functional meaning of brood amalgamations, our results suggest that they are originated by the aggressive behaviour of adults, although the forces driving them could depend greatly on ecological conditions and vary among species and populations. Finally, because brood amalgamations can be determined by adult aggressiveness contrasting with the origin and typical definition of the term ‘‘creche’’ (which implies the nursery concept), we propose the use of the term ‘‘brood amalgamation’’ for the penguin ‘‘creches’’. Peer reviewed Article in Journal/Newspaper Antarc* Antarctica Chinstrap penguin Pygoscelis antarctica Digital.CSIC (Spanish National Research Council) Polar Biology 26 8 538 544 |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
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ftcsic |
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English |
description |
Despite the high number of species in which creching behaviour has been analysed, the factors determining brood desertion and chick aggregations remain relatively poorly understood. We analysed cre- ching behaviour of chinstrap penguins (Pygoscelis ant- arctica) to test whether: (1) timing of chick aggregations was mainly determined by the growth stage of chicks or by adult physiological constraints; (2) the creche acts as a protective mechanism against predation or as a defence against conspecific adult aggressiveness. Our results show that chick desertion was not related to chick growth rate and was driven primarily by a parental decision, determined by adult physical constraints imposed by moulting needs and the short breeding sea- son in Antarctica. With respect to the functional meaning of brood amalgamations, our results suggest that they are originated by the aggressive behaviour of adults, although the forces driving them could depend greatly on ecological conditions and vary among species and populations. Finally, because brood amalgamations can be determined by adult aggressiveness contrasting with the origin and typical definition of the term ‘‘creche’’ (which implies the nursery concept), we propose the use of the term ‘‘brood amalgamation’’ for the penguin ‘‘creches’’. Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Penteriani, Vincenzo Viñuela, Javier Belliure, Josabel Bustamante, Javier Ferrer, Miguel |
spellingShingle |
Penteriani, Vincenzo Viñuela, Javier Belliure, Josabel Bustamante, Javier Ferrer, Miguel Causal and functional correlates of brood amalgamation in the chinstrap penguin Pygoscelis antarctica : parental decision and adult aggressiveness |
author_facet |
Penteriani, Vincenzo Viñuela, Javier Belliure, Josabel Bustamante, Javier Ferrer, Miguel |
author_sort |
Penteriani, Vincenzo |
title |
Causal and functional correlates of brood amalgamation in the chinstrap penguin Pygoscelis antarctica : parental decision and adult aggressiveness |
title_short |
Causal and functional correlates of brood amalgamation in the chinstrap penguin Pygoscelis antarctica : parental decision and adult aggressiveness |
title_full |
Causal and functional correlates of brood amalgamation in the chinstrap penguin Pygoscelis antarctica : parental decision and adult aggressiveness |
title_fullStr |
Causal and functional correlates of brood amalgamation in the chinstrap penguin Pygoscelis antarctica : parental decision and adult aggressiveness |
title_full_unstemmed |
Causal and functional correlates of brood amalgamation in the chinstrap penguin Pygoscelis antarctica : parental decision and adult aggressiveness |
title_sort |
causal and functional correlates of brood amalgamation in the chinstrap penguin pygoscelis antarctica : parental decision and adult aggressiveness |
publisher |
Springer |
publishDate |
2003 |
url |
http://hdl.handle.net/10261/47030 https://doi.org/10.1007/s00300-003-0517-9 |
genre |
Antarc* Antarctica Chinstrap penguin Pygoscelis antarctica |
genre_facet |
Antarc* Antarctica Chinstrap penguin Pygoscelis antarctica |
op_relation |
http://www.springerlink.com/content/pbn33qym16k1xhqq/fulltext.pdf Polar Biol (2003) 26: 538–544 http://hdl.handle.net/10261/47030 doi:10.1007/s00300-003-0517-9 |
op_rights |
open |
op_doi |
https://doi.org/10.1007/s00300-003-0517-9 |
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Polar Biology |
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26 |
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8 |
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538 |
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544 |
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1790594366525407232 |