Leopard Seal Predation of Adelie Penguins
Systematic observations on a beach at the Cape Crozier, Antarctica Adelie Penguin (Pygoscelis adeliae) rookery provided data on the effects and form of Leopard Seal (Hydruga leptonyx) predation on adult and young penguins. Active predation, involving up to four seals, was observed during 56% of the...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Wiley
1967
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Online Access: | http://dx.doi.org/10.2307/1933751 http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F1933751 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F1933751 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.2307/1933751 |
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crwiley:10.2307/1933751 2024-06-23T07:44:58+00:00 Leopard Seal Predation of Adelie Penguins Penney, R. L. Lowry, George 1967 http://dx.doi.org/10.2307/1933751 http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F1933751 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F1933751 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.2307/1933751 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology volume 48, issue 5, page 878-882 ISSN 0012-9658 1939-9170 journal-article 1967 crwiley https://doi.org/10.2307/1933751 2024-06-04T06:44:44Z Systematic observations on a beach at the Cape Crozier, Antarctica Adelie Penguin (Pygoscelis adeliae) rookery provided data on the effects and form of Leopard Seal (Hydruga leptonyx) predation on adult and young penguins. Active predation, involving up to four seals, was observed during 56% of the time with average kill rates of 0.61 birds/hr. Predation rates increased with the height of incomingwaves and also when landing penguins were encumbered by floating ice on the behcn. Time of day was not found to influence predation rates. When young penguins began their exodus from the rookery in Jan. seals no longer preyed on adults. Seasonal depredation from Leopard Seals on the Cape Crozier beaches approximates 5% of the breeding population. The predators are thought to be utilizing a temporary, but abundant food resource. Article in Journal/Newspaper Adelie penguin Antarc* Antarctica Leopard Seal Leopard Seals Pygoscelis adeliae Wiley Online Library Cape Crozier ENVELOPE(169.400,169.400,-77.517,-77.517) Crozier ENVELOPE(169.400,169.400,-77.517,-77.517) Ecology 48 5 878 882 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Systematic observations on a beach at the Cape Crozier, Antarctica Adelie Penguin (Pygoscelis adeliae) rookery provided data on the effects and form of Leopard Seal (Hydruga leptonyx) predation on adult and young penguins. Active predation, involving up to four seals, was observed during 56% of the time with average kill rates of 0.61 birds/hr. Predation rates increased with the height of incomingwaves and also when landing penguins were encumbered by floating ice on the behcn. Time of day was not found to influence predation rates. When young penguins began their exodus from the rookery in Jan. seals no longer preyed on adults. Seasonal depredation from Leopard Seals on the Cape Crozier beaches approximates 5% of the breeding population. The predators are thought to be utilizing a temporary, but abundant food resource. |
format |
Article in Journal/Newspaper |
author |
Penney, R. L. Lowry, George |
spellingShingle |
Penney, R. L. Lowry, George Leopard Seal Predation of Adelie Penguins |
author_facet |
Penney, R. L. Lowry, George |
author_sort |
Penney, R. L. |
title |
Leopard Seal Predation of Adelie Penguins |
title_short |
Leopard Seal Predation of Adelie Penguins |
title_full |
Leopard Seal Predation of Adelie Penguins |
title_fullStr |
Leopard Seal Predation of Adelie Penguins |
title_full_unstemmed |
Leopard Seal Predation of Adelie Penguins |
title_sort |
leopard seal predation of adelie penguins |
publisher |
Wiley |
publishDate |
1967 |
url |
http://dx.doi.org/10.2307/1933751 http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F1933751 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F1933751 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.2307/1933751 |
long_lat |
ENVELOPE(169.400,169.400,-77.517,-77.517) ENVELOPE(169.400,169.400,-77.517,-77.517) |
geographic |
Cape Crozier Crozier |
geographic_facet |
Cape Crozier Crozier |
genre |
Adelie penguin Antarc* Antarctica Leopard Seal Leopard Seals Pygoscelis adeliae |
genre_facet |
Adelie penguin Antarc* Antarctica Leopard Seal Leopard Seals Pygoscelis adeliae |
op_source |
Ecology volume 48, issue 5, page 878-882 ISSN 0012-9658 1939-9170 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.2307/1933751 |
container_title |
Ecology |
container_volume |
48 |
container_issue |
5 |
container_start_page |
878 |
op_container_end_page |
882 |
_version_ |
1802642545542430720 |