The cephalopod prey of the Weddell seal, Leptonychotes weddellii, a biological sampler of the Antarctic marine ecosystem
Weddell seals, Leptonychotes weddellii, are important apex predators in the food web of the Antarctic marine ecosystem. However, detailed information on their trophic relationships with cephalopods is scarce. Moreover, cephalopods play a key role in the marine environment, but knowledge of their fee...
Published in: | Polar Biology |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer
|
Subjects: | |
Online Access: | http://hdl.handle.net/11336/42258 |
id |
ftconicet:oai:ri.conicet.gov.ar:11336/42258 |
---|---|
record_format |
openpolar |
spelling |
ftconicet:oai:ri.conicet.gov.ar:11336/42258 2023-10-09T21:45:38+02:00 The cephalopod prey of the Weddell seal, Leptonychotes weddellii, a biological sampler of the Antarctic marine ecosystem Negri, Agustina Daneri, Gustavo Adolfo Ceia, F. Vieira, R. Cherel, Y. Coria, N. R. Corbalán, A. Xavier, J. C. application/pdf http://hdl.handle.net/11336/42258 eng eng Springer info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-015-1794-9 info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00300-015-1794-9 http://hdl.handle.net/11336/42258 Negri, Agustina; Daneri, Gustavo Adolfo; Ceia, F.; Vieira, R.; Cherel, Y.; et al.; The cephalopod prey of the Weddell seal, Leptonychotes weddellii, a biological sampler of the Antarctic marine ecosystem; Springer; Polar Biology; 39; 3; 3-2016; 561-564 0722-4060 1432-2056 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ Antarctica Leptonychotes weddellii Diet Cephalopods Stable isotopes https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1007/s00300-015-1794-9 2023-09-24T19:18:53Z Weddell seals, Leptonychotes weddellii, are important apex predators in the food web of the Antarctic marine ecosystem. However, detailed information on their trophic relationships with cephalopods is scarce. Moreover, cephalopods play a key role in the marine environment, but knowledge of their feeding habits is limited by lack of data. Here, we have combined the use of this seal as a biological sampler together with measurements of the stable isotopic signature of the beaks of their cephalopod prey. Thus, the aims of the present study were: (1) to examine in detail the cephalopod portion of the diet of Weddell seals by means of scat analysis and (2) to assess the habitat use and trophic level of the different cephalopod prey taxa identified. From January to February 2009, a total of 48 faecal droppings were collected at Hope Bay, Antarctic Peninsula. Cephalopods were mainly represented by beaks (n = 83) which were identified to the lowest possible taxonomic level. Furthermore, subsamples of beaks were separated for further isotopic analysis. Relative abundance of stable isotopes of carbon (δ13C) and nitrogen (δ15N) was determined by continuous-flow isotope-ratio mass spectrometry. Cephalopods were represented uniquely by octopods of the subfamily Eledoninae. Pareledone turqueti was the dominant prey species followed by the papillated Pareledone species group and Adelieledone polymorpha. We conclude that Weddell seals preyed primarily on benthic prey resources. Furthermore, the relatively similar δ13C and δ15N values in beaks of the three octopod prey taxa suggest that these share the same type of habitat and occupy similar trophic level positions. Fil: Negri, Agustina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina Fil: Daneri, ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Dirección Nacional del Antártico Instituto Antártico Argentino Polar Biology Weddell Seal Weddell Seals CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic The Antarctic Antarctic Peninsula Argentino Weddell Argentina Hope Bay ENVELOPE(-57.038,-57.038,-63.403,-63.403) Polar Biology 39 3 561 564 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
Antarctica Leptonychotes weddellii Diet Cephalopods Stable isotopes https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
Antarctica Leptonychotes weddellii Diet Cephalopods Stable isotopes https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Negri, Agustina Daneri, Gustavo Adolfo Ceia, F. Vieira, R. Cherel, Y. Coria, N. R. Corbalán, A. Xavier, J. C. The cephalopod prey of the Weddell seal, Leptonychotes weddellii, a biological sampler of the Antarctic marine ecosystem |
topic_facet |
Antarctica Leptonychotes weddellii Diet Cephalopods Stable isotopes https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Weddell seals, Leptonychotes weddellii, are important apex predators in the food web of the Antarctic marine ecosystem. However, detailed information on their trophic relationships with cephalopods is scarce. Moreover, cephalopods play a key role in the marine environment, but knowledge of their feeding habits is limited by lack of data. Here, we have combined the use of this seal as a biological sampler together with measurements of the stable isotopic signature of the beaks of their cephalopod prey. Thus, the aims of the present study were: (1) to examine in detail the cephalopod portion of the diet of Weddell seals by means of scat analysis and (2) to assess the habitat use and trophic level of the different cephalopod prey taxa identified. From January to February 2009, a total of 48 faecal droppings were collected at Hope Bay, Antarctic Peninsula. Cephalopods were mainly represented by beaks (n = 83) which were identified to the lowest possible taxonomic level. Furthermore, subsamples of beaks were separated for further isotopic analysis. Relative abundance of stable isotopes of carbon (δ13C) and nitrogen (δ15N) was determined by continuous-flow isotope-ratio mass spectrometry. Cephalopods were represented uniquely by octopods of the subfamily Eledoninae. Pareledone turqueti was the dominant prey species followed by the papillated Pareledone species group and Adelieledone polymorpha. We conclude that Weddell seals preyed primarily on benthic prey resources. Furthermore, the relatively similar δ13C and δ15N values in beaks of the three octopod prey taxa suggest that these share the same type of habitat and occupy similar trophic level positions. Fil: Negri, Agustina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina Fil: Daneri, ... |
format |
Article in Journal/Newspaper |
author |
Negri, Agustina Daneri, Gustavo Adolfo Ceia, F. Vieira, R. Cherel, Y. Coria, N. R. Corbalán, A. Xavier, J. C. |
author_facet |
Negri, Agustina Daneri, Gustavo Adolfo Ceia, F. Vieira, R. Cherel, Y. Coria, N. R. Corbalán, A. Xavier, J. C. |
author_sort |
Negri, Agustina |
title |
The cephalopod prey of the Weddell seal, Leptonychotes weddellii, a biological sampler of the Antarctic marine ecosystem |
title_short |
The cephalopod prey of the Weddell seal, Leptonychotes weddellii, a biological sampler of the Antarctic marine ecosystem |
title_full |
The cephalopod prey of the Weddell seal, Leptonychotes weddellii, a biological sampler of the Antarctic marine ecosystem |
title_fullStr |
The cephalopod prey of the Weddell seal, Leptonychotes weddellii, a biological sampler of the Antarctic marine ecosystem |
title_full_unstemmed |
The cephalopod prey of the Weddell seal, Leptonychotes weddellii, a biological sampler of the Antarctic marine ecosystem |
title_sort |
cephalopod prey of the weddell seal, leptonychotes weddellii, a biological sampler of the antarctic marine ecosystem |
publisher |
Springer |
url |
http://hdl.handle.net/11336/42258 |
long_lat |
ENVELOPE(-57.038,-57.038,-63.403,-63.403) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Argentino Weddell Argentina Hope Bay |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Argentino Weddell Argentina Hope Bay |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Dirección Nacional del Antártico Instituto Antártico Argentino Polar Biology Weddell Seal Weddell Seals |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Dirección Nacional del Antártico Instituto Antártico Argentino Polar Biology Weddell Seal Weddell Seals |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-015-1794-9 info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00300-015-1794-9 http://hdl.handle.net/11336/42258 Negri, Agustina; Daneri, Gustavo Adolfo; Ceia, F.; Vieira, R.; Cherel, Y.; et al.; The cephalopod prey of the Weddell seal, Leptonychotes weddellii, a biological sampler of the Antarctic marine ecosystem; Springer; Polar Biology; 39; 3; 3-2016; 561-564 0722-4060 1432-2056 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1007/s00300-015-1794-9 |
container_title |
Polar Biology |
container_volume |
39 |
container_issue |
3 |
container_start_page |
561 |
op_container_end_page |
564 |
_version_ |
1779320483987062784 |