Relating Demographic Performance to Breeding-Site Location in the King Penguin
| Autor: | Sébastien Descamps, Jean-Paul Gendner, Céline Le Bohec, Michel Gauthier-Clerc, Yvon Le Maho |
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| Přispěvatelé: | Département Ecologie, Physiologie et Ethologie (DEPE-IPHC), Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Station Biologique de la Tour du Valat, Institut Pluridisciplinaire Hubert Curien (IPHC), Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2009 |
| Předmět: |
0106 biological sciences
Parasitism Zoology Aptenodytes patagonicus Tick breeding-site selection survival 010603 evolutionary biology 01 natural sciences Predation individual quality Site location Seasonal breeder King Penguin Ecology Evolution Behavior and Systematics geography breeding success geography.geographical_feature_category biology Ecology [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] 010604 marine biology & hydrobiology biology.organism_classification Archipelago Animal Science and Zoology [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
| Zdroj: | The Condor The Condor, 2009, 111 (1), pp.81-87. ⟨10.1525/cond.2009.080066⟩ |
| ISSN: | 1938-5129 0010-5422 |
| Popis: | International audience; In colonial species, it is often assumed that locations in the center of the colony are of highest quality and provide highest breeding success. We tested this prediction, known as the “central-periphery model,” in a King Penguin colony in the subantarctic Crozet Archipelago. Breeding activity and survival of 150 penguins, fitted with transponder tags, were monitored over an entire breeding season. Among these 150 birds, 50 bred on the slope at the upper periphery of the colony, where the rates of predation and parasitism by ticks were high. Ffifty birds bred in the center of the colony, where rates of predation and tick parasitism were low, and 50 bred at the lower end of the colony, where the rate of tick parasitism was low but predation and flooding were important risks. We predicted that the center of the colony should provide the safest breeding place and consequently be characterized by the highest breeding success and be used by the highest-quality individuals. Yet we found that penguins breeding in the center of the colony had the same breeding success as those at both peripheral locations. In addition, penguins breeding on the upper slope had a higher survival rate than penguins breeding at the center or bottom of the slope and were likely of higher quality. Our study does not support the central-periphery model and emphasizes the complexity behind the relationships among breeding site, breeding success, and individual quality. |
| Databáze: | OpenAIRE |
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