Regional Differences in the Diets of Adélie and Emperor Penguins in the Ross Sea, Antarctica
SIMPLE SUMMARY: Stable isotope analysis (SIA) and Stable isotope analysis in R (SIAR) model were used to identify the diet composition and regional differences of Adélie and Emperor penguins in Ross Sea region. Adélie Penguin at Cape Hallett fed on Antarctic krill and Adélie Penguin at Inexpressible...
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ftpubmed:oai:pubmedcentral.nih.gov:8464710 2023-05-15T13:39:34+02:00 Regional Differences in the Diets of Adélie and Emperor Penguins in the Ross Sea, Antarctica Hong, Seo-Yeon Gal, Jong-Ku Lee, Bo-Yeon Son, Wu-Ju Jung, Jin-Woo La, Hyung-Sul Shin, Kyung-Hoon Kim, Jeong-Hoon Ha, Sun-Yong 2021-09-13 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8464710/ http://www.ncbi.nlm.nih.gov/pubmed/34573647 https://doi.org/10.3390/ani11092681 en eng MDPI http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8464710/ http://www.ncbi.nlm.nih.gov/pubmed/34573647 http://dx.doi.org/10.3390/ani11092681 © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). CC-BY Animals (Basel) Article Text 2021 ftpubmed https://doi.org/10.3390/ani11092681 2021-10-03T00:50:04Z SIMPLE SUMMARY: Stable isotope analysis (SIA) and Stable isotope analysis in R (SIAR) model were used to identify the diet composition and regional differences of Adélie and Emperor penguins in Ross Sea region. Adélie Penguin at Cape Hallett fed on Antarctic krill and Adélie Penguin at Inexpressible Island fed on ice krill and Antarctic silverfish. Emperor Penguins fed on Antarctic silverfish regardless breeding site. Therefore, Adélie Penguin showed regional difference in the diet and Emperor Penguin showed no regional differences in the diet. These diet composition of penguins is affected by competition and distribution of prey, it is important to study the diet of penguins in relation to the sympathetic food sources needed to understand the changes in energy flows and Ross Sea ecosystems due to climate change. ABSTRACT: To identify the dietary composition and characteristics of both Adélie (Pygoscelis adeliae) and Emperor (Aptenodytes forsteri) penguins at four breeding sites, we performed stable carbon (δ(13)C) and nitrogen (δ(15)N) isotope analysis of down samples taken from penguin chicks. Adélie Penguin chicks at Cape Hallett mostly fed on Antarctic krill (Euphausia superba; 65.5 ± 3.5%), a reflection of the prevalence of that species near Cape Hallett, and no significant differences were noted between 2017 and 2018. However, Adélie Penguin chicks at Inexpressible Island, located near Terra Nova Bay, fed on both Antarctic silverfish (Pleuragramma antarctica; 42.5%) and ice krill (Euphausia crystallorophias; 47%), reflecting the high biomass observed in Terra Nova Bay. Meanwhile, no significant difference was noted between the two breeding sites of the Emperor Penguin. Emperor Penguin chicks predominantly fed on Antarctic silverfish (74.5 ± 2.1%) at both breeding sites (Cape Washington and Coulman Island), suggesting that diet preference represents the main factor influencing Emperor Penguin foraging. In contrast, the diet of the Adélie Penguin reflects presumed regional differences in prey prevalence, as ... Text Antarc* Antarctic Antarctic Krill Antarctic silverfish Antarctica Aptenodytes forsteri Coulman Island Emperor penguins Euphausia superba Inexpressible Island Pygoscelis adeliae Ross Sea PubMed Central (PMC) Antarctic Cape Hallett ENVELOPE(170.217,170.217,-72.317,-72.317) Cape Washington ENVELOPE(-154.800,-154.800,-78.100,-78.100) Coulman Island ENVELOPE(169.750,169.750,-73.467,-73.467) Hallett ENVELOPE(170.217,170.217,-72.317,-72.317) Inexpressible Island ENVELOPE(163.650,163.650,-74.900,-74.900) Ross Sea Terra Nova Bay Animals 11 9 2681 |
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Article Hong, Seo-Yeon Gal, Jong-Ku Lee, Bo-Yeon Son, Wu-Ju Jung, Jin-Woo La, Hyung-Sul Shin, Kyung-Hoon Kim, Jeong-Hoon Ha, Sun-Yong Regional Differences in the Diets of Adélie and Emperor Penguins in the Ross Sea, Antarctica |
topic_facet |
Article |
description |
SIMPLE SUMMARY: Stable isotope analysis (SIA) and Stable isotope analysis in R (SIAR) model were used to identify the diet composition and regional differences of Adélie and Emperor penguins in Ross Sea region. Adélie Penguin at Cape Hallett fed on Antarctic krill and Adélie Penguin at Inexpressible Island fed on ice krill and Antarctic silverfish. Emperor Penguins fed on Antarctic silverfish regardless breeding site. Therefore, Adélie Penguin showed regional difference in the diet and Emperor Penguin showed no regional differences in the diet. These diet composition of penguins is affected by competition and distribution of prey, it is important to study the diet of penguins in relation to the sympathetic food sources needed to understand the changes in energy flows and Ross Sea ecosystems due to climate change. ABSTRACT: To identify the dietary composition and characteristics of both Adélie (Pygoscelis adeliae) and Emperor (Aptenodytes forsteri) penguins at four breeding sites, we performed stable carbon (δ(13)C) and nitrogen (δ(15)N) isotope analysis of down samples taken from penguin chicks. Adélie Penguin chicks at Cape Hallett mostly fed on Antarctic krill (Euphausia superba; 65.5 ± 3.5%), a reflection of the prevalence of that species near Cape Hallett, and no significant differences were noted between 2017 and 2018. However, Adélie Penguin chicks at Inexpressible Island, located near Terra Nova Bay, fed on both Antarctic silverfish (Pleuragramma antarctica; 42.5%) and ice krill (Euphausia crystallorophias; 47%), reflecting the high biomass observed in Terra Nova Bay. Meanwhile, no significant difference was noted between the two breeding sites of the Emperor Penguin. Emperor Penguin chicks predominantly fed on Antarctic silverfish (74.5 ± 2.1%) at both breeding sites (Cape Washington and Coulman Island), suggesting that diet preference represents the main factor influencing Emperor Penguin foraging. In contrast, the diet of the Adélie Penguin reflects presumed regional differences in prey prevalence, as ... |
format |
Text |
author |
Hong, Seo-Yeon Gal, Jong-Ku Lee, Bo-Yeon Son, Wu-Ju Jung, Jin-Woo La, Hyung-Sul Shin, Kyung-Hoon Kim, Jeong-Hoon Ha, Sun-Yong |
author_facet |
Hong, Seo-Yeon Gal, Jong-Ku Lee, Bo-Yeon Son, Wu-Ju Jung, Jin-Woo La, Hyung-Sul Shin, Kyung-Hoon Kim, Jeong-Hoon Ha, Sun-Yong |
author_sort |
Hong, Seo-Yeon |
title |
Regional Differences in the Diets of Adélie and Emperor Penguins in the Ross Sea, Antarctica |
title_short |
Regional Differences in the Diets of Adélie and Emperor Penguins in the Ross Sea, Antarctica |
title_full |
Regional Differences in the Diets of Adélie and Emperor Penguins in the Ross Sea, Antarctica |
title_fullStr |
Regional Differences in the Diets of Adélie and Emperor Penguins in the Ross Sea, Antarctica |
title_full_unstemmed |
Regional Differences in the Diets of Adélie and Emperor Penguins in the Ross Sea, Antarctica |
title_sort |
regional differences in the diets of adélie and emperor penguins in the ross sea, antarctica |
publisher |
MDPI |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8464710/ http://www.ncbi.nlm.nih.gov/pubmed/34573647 https://doi.org/10.3390/ani11092681 |
long_lat |
ENVELOPE(170.217,170.217,-72.317,-72.317) ENVELOPE(-154.800,-154.800,-78.100,-78.100) ENVELOPE(169.750,169.750,-73.467,-73.467) ENVELOPE(170.217,170.217,-72.317,-72.317) ENVELOPE(163.650,163.650,-74.900,-74.900) |
geographic |
Antarctic Cape Hallett Cape Washington Coulman Island Hallett Inexpressible Island Ross Sea Terra Nova Bay |
geographic_facet |
Antarctic Cape Hallett Cape Washington Coulman Island Hallett Inexpressible Island Ross Sea Terra Nova Bay |
genre |
Antarc* Antarctic Antarctic Krill Antarctic silverfish Antarctica Aptenodytes forsteri Coulman Island Emperor penguins Euphausia superba Inexpressible Island Pygoscelis adeliae Ross Sea |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic silverfish Antarctica Aptenodytes forsteri Coulman Island Emperor penguins Euphausia superba Inexpressible Island Pygoscelis adeliae Ross Sea |
op_source |
Animals (Basel) |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8464710/ http://www.ncbi.nlm.nih.gov/pubmed/34573647 http://dx.doi.org/10.3390/ani11092681 |
op_rights |
© 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/ani11092681 |
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