Simultaneous DNA-based diet analysis of breeding, non-breeding and chick Adelie penguins
As central place foragers, breeding penguins are restricted in foraging range by the need to return to the colony to feed chicks. Furthermore, breeding birds must balance energetic gain from self-feeding with the costs of returning to provision young. Non-breeding birds, however, are likely to be le...
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Online Access: | https://doi.org/10.1098/rsos.150443 http://www.ncbi.nlm.nih.gov/pubmed/26909171 http://ecite.utas.edu.au/148756 |
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ftunivtasecite:oai:ecite.utas.edu.au:148756 2023-05-15T13:59:47+02:00 Simultaneous DNA-based diet analysis of breeding, non-breeding and chick Adelie penguins McInnes, JC Emmerson, L Southwell, C Faux, C Jarman, SN 2016 application/pdf https://doi.org/10.1098/rsos.150443 http://www.ncbi.nlm.nih.gov/pubmed/26909171 http://ecite.utas.edu.au/148756 en eng The Royal Society Publishing http://ecite.utas.edu.au/148756/1/148756 - Simultaneous DNA-based diet analysis of breeding non-breeding.pdf http://dx.doi.org/10.1098/rsos.150443 McInnes, JC and Emmerson, L and Southwell, C and Faux, C and Jarman, SN, Simultaneous DNA-based diet analysis of breeding, non-breeding and chick Adelie penguins, Royal Society Open Science, 3, (1) Article 150443. ISSN 2054-5703 (2016) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/26909171 http://ecite.utas.edu.au/148756 Biological Sciences Ecology Behavioural ecology Refereed Article PeerReviewed 2016 ftunivtasecite https://doi.org/10.1098/rsos.150443 2022-03-21T23:16:43Z As central place foragers, breeding penguins are restricted in foraging range by the need to return to the colony to feed chicks. Furthermore, breeding birds must balance energetic gain from self-feeding with the costs of returning to provision young. Non-breeding birds, however, are likely to be less restricted in foraging range and lack the high energy demands of provisioning, therefore may consume different prey to breeders. We used DNA dietary analysis to determine whether there was a difference in provisioning and self-feeding diet by identifying prey DNA in scat samples from breeding and chick Adlie penguins at two locations in East Antarctica. We also investigated diet differences between breeders and non-breeders at one site. Although previous work shows changing foraging behaviour between chick provisioning and self-feeding, our results suggest no significant differences in the main prey groups consumed by chicks and breeders at either site or between breeding stages. This may reflect the inability of penguins to selectively forage when provisioning, or resources were sufficient for all foraging needs. Conversely, non-breeders were found to consume different prey groups to breeders, which may reflect less restricted foraging ranges, breeders actively selecting particular prey during breeding or reduced foraging experience of non-breeders. Article in Journal/Newspaper Antarc* Antarctica East Antarctica eCite UTAS (University of Tasmania) East Antarctica Royal Society Open Science 3 1 150443 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Behavioural ecology |
spellingShingle |
Biological Sciences Ecology Behavioural ecology McInnes, JC Emmerson, L Southwell, C Faux, C Jarman, SN Simultaneous DNA-based diet analysis of breeding, non-breeding and chick Adelie penguins |
topic_facet |
Biological Sciences Ecology Behavioural ecology |
description |
As central place foragers, breeding penguins are restricted in foraging range by the need to return to the colony to feed chicks. Furthermore, breeding birds must balance energetic gain from self-feeding with the costs of returning to provision young. Non-breeding birds, however, are likely to be less restricted in foraging range and lack the high energy demands of provisioning, therefore may consume different prey to breeders. We used DNA dietary analysis to determine whether there was a difference in provisioning and self-feeding diet by identifying prey DNA in scat samples from breeding and chick Adlie penguins at two locations in East Antarctica. We also investigated diet differences between breeders and non-breeders at one site. Although previous work shows changing foraging behaviour between chick provisioning and self-feeding, our results suggest no significant differences in the main prey groups consumed by chicks and breeders at either site or between breeding stages. This may reflect the inability of penguins to selectively forage when provisioning, or resources were sufficient for all foraging needs. Conversely, non-breeders were found to consume different prey groups to breeders, which may reflect less restricted foraging ranges, breeders actively selecting particular prey during breeding or reduced foraging experience of non-breeders. |
format |
Article in Journal/Newspaper |
author |
McInnes, JC Emmerson, L Southwell, C Faux, C Jarman, SN |
author_facet |
McInnes, JC Emmerson, L Southwell, C Faux, C Jarman, SN |
author_sort |
McInnes, JC |
title |
Simultaneous DNA-based diet analysis of breeding, non-breeding and chick Adelie penguins |
title_short |
Simultaneous DNA-based diet analysis of breeding, non-breeding and chick Adelie penguins |
title_full |
Simultaneous DNA-based diet analysis of breeding, non-breeding and chick Adelie penguins |
title_fullStr |
Simultaneous DNA-based diet analysis of breeding, non-breeding and chick Adelie penguins |
title_full_unstemmed |
Simultaneous DNA-based diet analysis of breeding, non-breeding and chick Adelie penguins |
title_sort |
simultaneous dna-based diet analysis of breeding, non-breeding and chick adelie penguins |
publisher |
The Royal Society Publishing |
publishDate |
2016 |
url |
https://doi.org/10.1098/rsos.150443 http://www.ncbi.nlm.nih.gov/pubmed/26909171 http://ecite.utas.edu.au/148756 |
geographic |
East Antarctica |
geographic_facet |
East Antarctica |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_relation |
http://ecite.utas.edu.au/148756/1/148756 - Simultaneous DNA-based diet analysis of breeding non-breeding.pdf http://dx.doi.org/10.1098/rsos.150443 McInnes, JC and Emmerson, L and Southwell, C and Faux, C and Jarman, SN, Simultaneous DNA-based diet analysis of breeding, non-breeding and chick Adelie penguins, Royal Society Open Science, 3, (1) Article 150443. ISSN 2054-5703 (2016) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/26909171 http://ecite.utas.edu.au/148756 |
op_doi |
https://doi.org/10.1098/rsos.150443 |
container_title |
Royal Society Open Science |
container_volume |
3 |
container_issue |
1 |
container_start_page |
150443 |
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1766268580107649024 |