Conventional and molecular analysis of the diet of gentoo penguins: contributions to assess scats for non-invasive penguin diet monitoring
International audience There is a growing search for less invasive methods while studying the diet of Antarctic animals in the wild. Therefore,we compared the diet of gentoo penguins from stomach contents (i.e. through visual identification of prey remains) andscats (i.e. faeces), and further compar...
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Online Access: | https://hal.science/hal-01881988 https://doi.org/10.1007/s00300-018-2364-8 |
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ftunivrochelle:oai:HAL:hal-01881988v1 2024-02-11T09:56:18+01:00 Conventional and molecular analysis of the diet of gentoo penguins: contributions to assess scats for non-invasive penguin diet monitoring Xavier, José Cherel, Yves Medeiros, Renata Velez, Nadja Dewar, Meagan Ratcliffe, Norman Carreiro, Ana Trathan, Phil British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Institute of Marine Research - Department of Life Sciences Portugal University of Coimbra Portugal (UC) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) School of Biosciences Cardiff Cardiff University chool of Applied and Biomedical Sciences Federation University Australia 2018-11 https://hal.science/hal-01881988 https://doi.org/10.1007/s00300-018-2364-8 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-018-2364-8 hal-01881988 https://hal.science/hal-01881988 doi:10.1007/s00300-018-2364-8 ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-01881988 Polar Biology, 2018, 41 (11), pp.2275 - 2287. ⟨10.1007/s00300-018-2364-8⟩ Pygoscelis papua Southern Ocean Prey genetics Feeding ecology Conservation [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2018 ftunivrochelle https://doi.org/10.1007/s00300-018-2364-8 2024-01-23T23:35:21Z International audience There is a growing search for less invasive methods while studying the diet of Antarctic animals in the wild. Therefore,we compared the diet of gentoo penguins from stomach contents (i.e. through visual identification of prey remains) andscats (i.e. faeces), and further compared prey DNA assay in fresh and old scats. Prey remains identified visually in stomachcontents and scats were broadly comparable: the crustaceans and fish were the most important components, with Themistogaudichaudii clearly being the most frequent and numerous prey species in both sampling methods. By mass, differencesin species frequency were observed in stomach contents (Parachaenichthys georgianus) and scats (Champsocephalus gunnari),with the former fish species absent in scats. Differences were detected in the most frequent prey (T. gaudichaudiiand Euphausia superba) and in various fish species, most with bigger sizes in scats. Allometric equations to estimate mostcrustacean’s sizes (i.e. relationships between carapace and mass/total length) are needed. For DNA studies, when comparingDNA from fresh and old scats, both provided similar results that, in general, were also similar to the visual analysis. In orderto use penguin scats (along with the use of DNA analyses) for monitoring purposes, allometric equations to estimate massand size of prey (most crustaceans) and better designed species-specific primers are needed for targeting key prey species(e.g. Euphausia superba, T. gaudichaudii). These DNA methodologies can complement other methods (i.e. visual analysesand stomach contents analyses) in monitoring programs of penguins. Article in Journal/Newspaper Antarc* Antarctic Euphausia superba Polar Biology Pygoscelis papua Southern Ocean HAL - Université de La Rochelle Antarctic Southern Ocean Polar Biology 41 11 2275 2287 |
institution |
Open Polar |
collection |
HAL - Université de La Rochelle |
op_collection_id |
ftunivrochelle |
language |
English |
topic |
Pygoscelis papua Southern Ocean Prey genetics Feeding ecology Conservation [SDE]Environmental Sciences |
spellingShingle |
Pygoscelis papua Southern Ocean Prey genetics Feeding ecology Conservation [SDE]Environmental Sciences Xavier, José Cherel, Yves Medeiros, Renata Velez, Nadja Dewar, Meagan Ratcliffe, Norman Carreiro, Ana Trathan, Phil Conventional and molecular analysis of the diet of gentoo penguins: contributions to assess scats for non-invasive penguin diet monitoring |
topic_facet |
Pygoscelis papua Southern Ocean Prey genetics Feeding ecology Conservation [SDE]Environmental Sciences |
description |
International audience There is a growing search for less invasive methods while studying the diet of Antarctic animals in the wild. Therefore,we compared the diet of gentoo penguins from stomach contents (i.e. through visual identification of prey remains) andscats (i.e. faeces), and further compared prey DNA assay in fresh and old scats. Prey remains identified visually in stomachcontents and scats were broadly comparable: the crustaceans and fish were the most important components, with Themistogaudichaudii clearly being the most frequent and numerous prey species in both sampling methods. By mass, differencesin species frequency were observed in stomach contents (Parachaenichthys georgianus) and scats (Champsocephalus gunnari),with the former fish species absent in scats. Differences were detected in the most frequent prey (T. gaudichaudiiand Euphausia superba) and in various fish species, most with bigger sizes in scats. Allometric equations to estimate mostcrustacean’s sizes (i.e. relationships between carapace and mass/total length) are needed. For DNA studies, when comparingDNA from fresh and old scats, both provided similar results that, in general, were also similar to the visual analysis. In orderto use penguin scats (along with the use of DNA analyses) for monitoring purposes, allometric equations to estimate massand size of prey (most crustaceans) and better designed species-specific primers are needed for targeting key prey species(e.g. Euphausia superba, T. gaudichaudii). These DNA methodologies can complement other methods (i.e. visual analysesand stomach contents analyses) in monitoring programs of penguins. |
author2 |
British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Institute of Marine Research - Department of Life Sciences Portugal University of Coimbra Portugal (UC) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) School of Biosciences Cardiff Cardiff University chool of Applied and Biomedical Sciences Federation University Australia |
format |
Article in Journal/Newspaper |
author |
Xavier, José Cherel, Yves Medeiros, Renata Velez, Nadja Dewar, Meagan Ratcliffe, Norman Carreiro, Ana Trathan, Phil |
author_facet |
Xavier, José Cherel, Yves Medeiros, Renata Velez, Nadja Dewar, Meagan Ratcliffe, Norman Carreiro, Ana Trathan, Phil |
author_sort |
Xavier, José |
title |
Conventional and molecular analysis of the diet of gentoo penguins: contributions to assess scats for non-invasive penguin diet monitoring |
title_short |
Conventional and molecular analysis of the diet of gentoo penguins: contributions to assess scats for non-invasive penguin diet monitoring |
title_full |
Conventional and molecular analysis of the diet of gentoo penguins: contributions to assess scats for non-invasive penguin diet monitoring |
title_fullStr |
Conventional and molecular analysis of the diet of gentoo penguins: contributions to assess scats for non-invasive penguin diet monitoring |
title_full_unstemmed |
Conventional and molecular analysis of the diet of gentoo penguins: contributions to assess scats for non-invasive penguin diet monitoring |
title_sort |
conventional and molecular analysis of the diet of gentoo penguins: contributions to assess scats for non-invasive penguin diet monitoring |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-01881988 https://doi.org/10.1007/s00300-018-2364-8 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Euphausia superba Polar Biology Pygoscelis papua Southern Ocean |
genre_facet |
Antarc* Antarctic Euphausia superba Polar Biology Pygoscelis papua Southern Ocean |
op_source |
ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-01881988 Polar Biology, 2018, 41 (11), pp.2275 - 2287. ⟨10.1007/s00300-018-2364-8⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-018-2364-8 hal-01881988 https://hal.science/hal-01881988 doi:10.1007/s00300-018-2364-8 |
op_doi |
https://doi.org/10.1007/s00300-018-2364-8 |
container_title |
Polar Biology |
container_volume |
41 |
container_issue |
11 |
container_start_page |
2275 |
op_container_end_page |
2287 |
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1790602087444250624 |