The food and feeding ecology of Adélie penguins (Pygoscelis adeliae) and Chinstrap penguins (P. antarctica) at Signy Island, South Orkney Islands
Adélie Pygoscelis adeliae and Chinstrap P. antarctica penguins are important consumers of Southern Ocean marine resources. The stomach contents of adult penguins at Signy Island, South Orkney Islands, were analysed quantitatively throughout the chick‐rearing period. They consisted almost exclusively...
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1985
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Online Access: | http://dx.doi.org/10.1111/j.1469-7998.1985.tb03532.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1985.tb03532.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1985.tb03532.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1985.tb03532.x |
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crwiley:10.1111/j.1469-7998.1985.tb03532.x 2024-10-13T14:02:34+00:00 The food and feeding ecology of Adélie penguins (Pygoscelis adeliae) and Chinstrap penguins (P. antarctica) at Signy Island, South Orkney Islands Lishman, G. S. 1985 http://dx.doi.org/10.1111/j.1469-7998.1985.tb03532.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1985.tb03532.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1985.tb03532.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1985.tb03532.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Zoology volume 205, issue 2, page 245-263 ISSN 0952-8369 1469-7998 journal-article 1985 crwiley https://doi.org/10.1111/j.1469-7998.1985.tb03532.x 2024-09-17T04:44:29Z Adélie Pygoscelis adeliae and Chinstrap P. antarctica penguins are important consumers of Southern Ocean marine resources. The stomach contents of adult penguins at Signy Island, South Orkney Islands, were analysed quantitatively throughout the chick‐rearing period. They consisted almost exclusively of Antarctic krill Euphausia superba , Adélies eating 35–63% by number and 23–28% by weight of juvenile krill and Chinstraps 72–87% by number and 90–95% by weight of mature krill, as well as small amounts offish and amphipods. Interspecific dietary differences may partly be attributable to Adélies starting breeding one month before Chinstraps but, as they persist when both are simultaneously rearing chicks, the two species may also forage in somewhat different areas. Krill data from net hauls indicate a substantial overlap in the size of krill taken by scientific, and probably also commercial, operations and by Adélie and Chinstrap penguins. Chicks were fed c. 300 g of food 0–5‐0‐8 times per day, Chinstrap chicks without a sibling being fed most frequently. Chicks of both species were most often fed in the late afternoon, and from estimates of swimming speed and feeding frequency adults may feed quite extensively at night. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctica Euphausia superba Pygoscelis adeliae Signy Island South Orkney Islands Southern Ocean Wiley Online Library Antarctic Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) Southern Ocean Journal of Zoology 205 2 245 263 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Adélie Pygoscelis adeliae and Chinstrap P. antarctica penguins are important consumers of Southern Ocean marine resources. The stomach contents of adult penguins at Signy Island, South Orkney Islands, were analysed quantitatively throughout the chick‐rearing period. They consisted almost exclusively of Antarctic krill Euphausia superba , Adélies eating 35–63% by number and 23–28% by weight of juvenile krill and Chinstraps 72–87% by number and 90–95% by weight of mature krill, as well as small amounts offish and amphipods. Interspecific dietary differences may partly be attributable to Adélies starting breeding one month before Chinstraps but, as they persist when both are simultaneously rearing chicks, the two species may also forage in somewhat different areas. Krill data from net hauls indicate a substantial overlap in the size of krill taken by scientific, and probably also commercial, operations and by Adélie and Chinstrap penguins. Chicks were fed c. 300 g of food 0–5‐0‐8 times per day, Chinstrap chicks without a sibling being fed most frequently. Chicks of both species were most often fed in the late afternoon, and from estimates of swimming speed and feeding frequency adults may feed quite extensively at night. |
format |
Article in Journal/Newspaper |
author |
Lishman, G. S. |
spellingShingle |
Lishman, G. S. The food and feeding ecology of Adélie penguins (Pygoscelis adeliae) and Chinstrap penguins (P. antarctica) at Signy Island, South Orkney Islands |
author_facet |
Lishman, G. S. |
author_sort |
Lishman, G. S. |
title |
The food and feeding ecology of Adélie penguins (Pygoscelis adeliae) and Chinstrap penguins (P. antarctica) at Signy Island, South Orkney Islands |
title_short |
The food and feeding ecology of Adélie penguins (Pygoscelis adeliae) and Chinstrap penguins (P. antarctica) at Signy Island, South Orkney Islands |
title_full |
The food and feeding ecology of Adélie penguins (Pygoscelis adeliae) and Chinstrap penguins (P. antarctica) at Signy Island, South Orkney Islands |
title_fullStr |
The food and feeding ecology of Adélie penguins (Pygoscelis adeliae) and Chinstrap penguins (P. antarctica) at Signy Island, South Orkney Islands |
title_full_unstemmed |
The food and feeding ecology of Adélie penguins (Pygoscelis adeliae) and Chinstrap penguins (P. antarctica) at Signy Island, South Orkney Islands |
title_sort |
food and feeding ecology of adélie penguins (pygoscelis adeliae) and chinstrap penguins (p. antarctica) at signy island, south orkney islands |
publisher |
Wiley |
publishDate |
1985 |
url |
http://dx.doi.org/10.1111/j.1469-7998.1985.tb03532.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1985.tb03532.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1985.tb03532.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1985.tb03532.x |
long_lat |
ENVELOPE(-45.595,-45.595,-60.708,-60.708) ENVELOPE(-45.500,-45.500,-60.583,-60.583) |
geographic |
Antarctic Signy Island South Orkney Islands Southern Ocean |
geographic_facet |
Antarctic Signy Island South Orkney Islands Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Antarctica Euphausia superba Pygoscelis adeliae Signy Island South Orkney Islands Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctica Euphausia superba Pygoscelis adeliae Signy Island South Orkney Islands Southern Ocean |
op_source |
Journal of Zoology volume 205, issue 2, page 245-263 ISSN 0952-8369 1469-7998 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1469-7998.1985.tb03532.x |
container_title |
Journal of Zoology |
container_volume |
205 |
container_issue |
2 |
container_start_page |
245 |
op_container_end_page |
263 |
_version_ |
1812818343257702400 |