Distribution of emperor penguins' dive directions under the fast sea ice
December 15-17, 2007, Royal Phuket City Hotel, Phuket, Thailand Emperor penguins Aptenodytes forsteri feed mainly on Pleurogramma antarcticum and Pagothenia borchgrevinki in the sea of Antarctica. Because these prey are not distributed uniformly, prey encounter rates during a dive change depending o...
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Graduate school of Informatics, Kyoto University
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ftkyotouniv:oai:repository.kulib.kyoto-u.ac.jp:2433/71014 2023-05-15T13:41:42+02:00 Distribution of emperor penguins' dive directions under the fast sea ice SHIOMI, KOZUE SATO, KATSUFUMI ARAI, NOBUAKI NAITO, YASUHIKO PONGANIS, PAUL J. 2009-03 application/pdf http://hdl.handle.net/2433/71014 eng eng Graduate school of Informatics, Kyoto University http://hdl.handle.net/2433/71014 Proceedings of the 4th International Symposium on SEASTAR2000 and Asian Bio-logging Science (The 8th SEASTAR2000 workshop) 89 91 emperor penguin dive direction foraging strategy data logger sea ice Conference Paper 2009 ftkyotouniv 2020-01-10T00:12:41Z December 15-17, 2007, Royal Phuket City Hotel, Phuket, Thailand Emperor penguins Aptenodytes forsteri feed mainly on Pleurogramma antarcticum and Pagothenia borchgrevinki in the sea of Antarctica. Because these prey are not distributed uniformly, prey encounter rates during a dive change depending on where emperor penguins dive. In limited time and space, they should select areas in which prey are expected to be abundant. We hypothesized that the distribution of emperor penguins' dive directions was not uniform due to their selective dives. In order to test this hypothesis, dive paths were calculated with the data recorded by data loggers. Dive direction was obtained for each dive path, and the distribution of the dive directions was investigated. In five experiments of the total of six experiments, the dive directions were not distributed uniformly. This suggested that the emperor penguins had a preference about their dive directions. The dive directions were not related with ocean current direction, which was considered to be one of the factors affecting penguins' diving behavior. The emperor penguins may have decided where they dived according to their knowledge about prey distribution and/or the behavior of conspecific individuals. Conference Object Antarc* Antarctica Aptenodytes forsteri Emperor penguins Sea ice Kyoto University Research Information Repository (KURENAI) |
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Open Polar |
collection |
Kyoto University Research Information Repository (KURENAI) |
op_collection_id |
ftkyotouniv |
language |
English |
topic |
emperor penguin dive direction foraging strategy data logger sea ice |
spellingShingle |
emperor penguin dive direction foraging strategy data logger sea ice SHIOMI, KOZUE SATO, KATSUFUMI ARAI, NOBUAKI NAITO, YASUHIKO PONGANIS, PAUL J. Distribution of emperor penguins' dive directions under the fast sea ice |
topic_facet |
emperor penguin dive direction foraging strategy data logger sea ice |
description |
December 15-17, 2007, Royal Phuket City Hotel, Phuket, Thailand Emperor penguins Aptenodytes forsteri feed mainly on Pleurogramma antarcticum and Pagothenia borchgrevinki in the sea of Antarctica. Because these prey are not distributed uniformly, prey encounter rates during a dive change depending on where emperor penguins dive. In limited time and space, they should select areas in which prey are expected to be abundant. We hypothesized that the distribution of emperor penguins' dive directions was not uniform due to their selective dives. In order to test this hypothesis, dive paths were calculated with the data recorded by data loggers. Dive direction was obtained for each dive path, and the distribution of the dive directions was investigated. In five experiments of the total of six experiments, the dive directions were not distributed uniformly. This suggested that the emperor penguins had a preference about their dive directions. The dive directions were not related with ocean current direction, which was considered to be one of the factors affecting penguins' diving behavior. The emperor penguins may have decided where they dived according to their knowledge about prey distribution and/or the behavior of conspecific individuals. |
format |
Conference Object |
author |
SHIOMI, KOZUE SATO, KATSUFUMI ARAI, NOBUAKI NAITO, YASUHIKO PONGANIS, PAUL J. |
author_facet |
SHIOMI, KOZUE SATO, KATSUFUMI ARAI, NOBUAKI NAITO, YASUHIKO PONGANIS, PAUL J. |
author_sort |
SHIOMI, KOZUE |
title |
Distribution of emperor penguins' dive directions under the fast sea ice |
title_short |
Distribution of emperor penguins' dive directions under the fast sea ice |
title_full |
Distribution of emperor penguins' dive directions under the fast sea ice |
title_fullStr |
Distribution of emperor penguins' dive directions under the fast sea ice |
title_full_unstemmed |
Distribution of emperor penguins' dive directions under the fast sea ice |
title_sort |
distribution of emperor penguins' dive directions under the fast sea ice |
publisher |
Graduate school of Informatics, Kyoto University |
publishDate |
2009 |
url |
http://hdl.handle.net/2433/71014 |
genre |
Antarc* Antarctica Aptenodytes forsteri Emperor penguins Sea ice |
genre_facet |
Antarc* Antarctica Aptenodytes forsteri Emperor penguins Sea ice |
op_relation |
http://hdl.handle.net/2433/71014 Proceedings of the 4th International Symposium on SEASTAR2000 and Asian Bio-logging Science (The 8th SEASTAR2000 workshop) 89 91 |
_version_ |
1766153993042526208 |