Ontogenic changes in habitat and trophic ecology in the Antarctic squid Kondakovia longimana derived from isotopic analysis on beaks
The life histories of cephalopods are still not well described. Stable isotopic analysis of cephalopod beaks is an effective method to study the habitat and trophic ecology of this group of organisms. As beaks grow continuously throughout squid’s life without replacement, we hypothesised that analys...
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ftnerc:oai:nora.nerc.ac.uk:520595 2023-05-15T13:49:35+02:00 Ontogenic changes in habitat and trophic ecology in the Antarctic squid Kondakovia longimana derived from isotopic analysis on beaks Queirós, José P. Cherel, Yves Ceia, Filipe R. Hilário, Ana Roberts, Jim Xavier, Jose 2018-12 text http://nora.nerc.ac.uk/id/eprint/520595/ https://nora.nerc.ac.uk/id/eprint/520595/1/Ontogenic%20changes%20in%20K.%20longimana_reviewer%20changes_JQ_JX_s.docx https://link.springer.com/article/10.1007%2Fs00300-018-2376-4 en eng Springer https://nora.nerc.ac.uk/id/eprint/520595/1/Ontogenic%20changes%20in%20K.%20longimana_reviewer%20changes_JQ_JX_s.docx Queirós, José P.; Cherel, Yves; Ceia, Filipe R.; Hilário, Ana; Roberts, Jim; Xavier, Jose orcid:0000-0002-9621-6660 . 2018 Ontogenic changes in habitat and trophic ecology in the Antarctic squid Kondakovia longimana derived from isotopic analysis on beaks. Polar Biology, 41 (12). 2409-2421. https://doi.org/10.1007/s00300-018-2376-4 <https://doi.org/10.1007/s00300-018-2376-4> Publication - Article PeerReviewed 2018 ftnerc https://doi.org/10.1007/s00300-018-2376-4 2023-02-04T19:46:51Z The life histories of cephalopods are still not well described. Stable isotopic analysis of cephalopod beaks is an effective method to study the habitat and trophic ecology of this group of organisms. As beaks grow continuously throughout squid’s life without replacement, we hypothesised that analysing different sections along the beak will provide information on the ontogenetic shifts during the individual’s lifetime. Here we used the Southern Ocean squid Kondakovia longimana as a model species to test the reliability of this method along the beaks of Antarctic species. Growing patterns show that beaks grow throughout the squid lifetime by a continuous deposition of material. This new material can influence the results of the stable isotopic analysis. δ13C and δ15N values (from − 26.3 to − 20.6‰ and from + 3.2 to + 8.2‰, respectively) from different beak regions indicated that K. longimana inhabits regions spanning a wide latitudinal range, and the trophic level at which it feeds increases throughout its lifetime. Stable isotopic analysis of different sections of the cephalopod beak is a reliable technique to study habitat and trophic ecology throughout Antarctic squid’s lifetime. Stable isotopic results showed an increase in δ15N values from the tip of the rostrum to the end of the hood and crest, in the upper beak, and to the free corner of lateral wall and wing in the lower beak. Our results also suggested that the upper beak is the best beak to study ontogenetic shifts, mainly in initial stages of the cephalopods’ life, presenting lower values of δ15N than the lower beak. Article in Journal/Newspaper Antarc* Antarctic Antarctic Squid Polar Biology Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean The Antarctic The Beak ENVELOPE(-130.771,-130.771,56.466,56.466) Polar Biology 41 12 2409 2421 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The life histories of cephalopods are still not well described. Stable isotopic analysis of cephalopod beaks is an effective method to study the habitat and trophic ecology of this group of organisms. As beaks grow continuously throughout squid’s life without replacement, we hypothesised that analysing different sections along the beak will provide information on the ontogenetic shifts during the individual’s lifetime. Here we used the Southern Ocean squid Kondakovia longimana as a model species to test the reliability of this method along the beaks of Antarctic species. Growing patterns show that beaks grow throughout the squid lifetime by a continuous deposition of material. This new material can influence the results of the stable isotopic analysis. δ13C and δ15N values (from − 26.3 to − 20.6‰ and from + 3.2 to + 8.2‰, respectively) from different beak regions indicated that K. longimana inhabits regions spanning a wide latitudinal range, and the trophic level at which it feeds increases throughout its lifetime. Stable isotopic analysis of different sections of the cephalopod beak is a reliable technique to study habitat and trophic ecology throughout Antarctic squid’s lifetime. Stable isotopic results showed an increase in δ15N values from the tip of the rostrum to the end of the hood and crest, in the upper beak, and to the free corner of lateral wall and wing in the lower beak. Our results also suggested that the upper beak is the best beak to study ontogenetic shifts, mainly in initial stages of the cephalopods’ life, presenting lower values of δ15N than the lower beak. |
format |
Article in Journal/Newspaper |
author |
Queirós, José P. Cherel, Yves Ceia, Filipe R. Hilário, Ana Roberts, Jim Xavier, Jose |
spellingShingle |
Queirós, José P. Cherel, Yves Ceia, Filipe R. Hilário, Ana Roberts, Jim Xavier, Jose Ontogenic changes in habitat and trophic ecology in the Antarctic squid Kondakovia longimana derived from isotopic analysis on beaks |
author_facet |
Queirós, José P. Cherel, Yves Ceia, Filipe R. Hilário, Ana Roberts, Jim Xavier, Jose |
author_sort |
Queirós, José P. |
title |
Ontogenic changes in habitat and trophic ecology in the Antarctic squid Kondakovia longimana derived from isotopic analysis on beaks |
title_short |
Ontogenic changes in habitat and trophic ecology in the Antarctic squid Kondakovia longimana derived from isotopic analysis on beaks |
title_full |
Ontogenic changes in habitat and trophic ecology in the Antarctic squid Kondakovia longimana derived from isotopic analysis on beaks |
title_fullStr |
Ontogenic changes in habitat and trophic ecology in the Antarctic squid Kondakovia longimana derived from isotopic analysis on beaks |
title_full_unstemmed |
Ontogenic changes in habitat and trophic ecology in the Antarctic squid Kondakovia longimana derived from isotopic analysis on beaks |
title_sort |
ontogenic changes in habitat and trophic ecology in the antarctic squid kondakovia longimana derived from isotopic analysis on beaks |
publisher |
Springer |
publishDate |
2018 |
url |
http://nora.nerc.ac.uk/id/eprint/520595/ https://nora.nerc.ac.uk/id/eprint/520595/1/Ontogenic%20changes%20in%20K.%20longimana_reviewer%20changes_JQ_JX_s.docx https://link.springer.com/article/10.1007%2Fs00300-018-2376-4 |
long_lat |
ENVELOPE(-130.771,-130.771,56.466,56.466) |
geographic |
Antarctic Southern Ocean The Antarctic The Beak |
geographic_facet |
Antarctic Southern Ocean The Antarctic The Beak |
genre |
Antarc* Antarctic Antarctic Squid Polar Biology Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Squid Polar Biology Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/520595/1/Ontogenic%20changes%20in%20K.%20longimana_reviewer%20changes_JQ_JX_s.docx Queirós, José P.; Cherel, Yves; Ceia, Filipe R.; Hilário, Ana; Roberts, Jim; Xavier, Jose orcid:0000-0002-9621-6660 . 2018 Ontogenic changes in habitat and trophic ecology in the Antarctic squid Kondakovia longimana derived from isotopic analysis on beaks. Polar Biology, 41 (12). 2409-2421. https://doi.org/10.1007/s00300-018-2376-4 <https://doi.org/10.1007/s00300-018-2376-4> |
op_doi |
https://doi.org/10.1007/s00300-018-2376-4 |
container_title |
Polar Biology |
container_volume |
41 |
container_issue |
12 |
container_start_page |
2409 |
op_container_end_page |
2421 |
_version_ |
1766251797640380416 |