From warm to cold waters: new insights into the habitat and trophic ecology of Southern Oceansquids throughout their life cycle
International audience Cephalopods play a major role in marine ecosystems, yet very little is known aboutthe dynamics of their habitat use and trophic ecology across the stages of their life cycle, particu-larly in the Southern Ocean. Here, we used stable isotope analyses of δ13C (a proxy for foragi...
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Online Access: | https://hal.science/hal-03003260 https://doi.org/10.3354/meps13551 |
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ftunivrochelle:oai:HAL:hal-03003260v1 2024-02-11T09:54:40+01:00 From warm to cold waters: new insights into the habitat and trophic ecology of Southern Oceansquids throughout their life cycle Queirós, José Pedro Hilário, José Ana Thompson, David Ceia, Filipe R. Elliott, Graeme Walker, Kath Cherel, Yves Xavier, Jose C Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) 2020 https://hal.science/hal-03003260 https://doi.org/10.3354/meps13551 en eng HAL CCSD Inter Research info:eu-repo/semantics/altIdentifier/doi/10.3354/meps13551 hal-03003260 https://hal.science/hal-03003260 doi:10.3354/meps13551 ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.science/hal-03003260 Marine Ecology Progress Series, 2020, 659, pp.113-126. ⟨10.3354/meps13551⟩ Ontogenetic changes Antarctica Cephalopods Stable isotopes Climate change South Pacific [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2020 ftunivrochelle https://doi.org/10.3354/meps13551 2024-01-23T23:34:51Z International audience Cephalopods play a major role in marine ecosystems, yet very little is known aboutthe dynamics of their habitat use and trophic ecology across the stages of their life cycle, particu-larly in the Southern Ocean. Here, we used stable isotope analyses of δ13C (a proxy for foraginghabitat) and δ15N (a proxy for trophic position) to investigate the habitat use and trophic eco logyof 10 squid species, collected from the diet of Antipodean (Diomedea antipodensis antipodensis)and Gibson’s (D. a. gibsoni)albatrosses breeding at Antipodes and Adams Island (South Pacific),respectively. We analyzed isotopes in 2 sections of squid lower beaks, representing 2 stages of thelife cycle: the tip of the rostrum (juvenile stage) and the wing (adult stage). Higher δ13C values inearly life stages (−20.8 ± 1.7 ‰) than in adult life stages (−21.6 ± 1.9 ‰) suggest that SouthernOcean squids tend to move southwards as they grow, with oceanic fronts being an important habi-tat for these species. Our results might indicate that adults may move southwards with climatechange, possibly impacting top predators living on northern islands. Overall, δ15N values revealedan increase in trophic position from early (6.7 ± 2.7 ‰) to adult life stages (9.0 ± 2.5 ‰) in all spe-cies. Nevertheless, significant differences between δ15N values of the 10 species, in both beak sec-tions, suggest different feeding strategies between species and life stages. Article in Journal/Newspaper Adams Island Antarc* Antarctica Southern Ocean HAL - Université de La Rochelle Adams Island ENVELOPE(92.550,92.550,-66.550,-66.550) Pacific Southern Ocean Marine Ecology Progress Series 659 113 126 |
institution |
Open Polar |
collection |
HAL - Université de La Rochelle |
op_collection_id |
ftunivrochelle |
language |
English |
topic |
Ontogenetic changes Antarctica Cephalopods Stable isotopes Climate change South Pacific [SDE]Environmental Sciences |
spellingShingle |
Ontogenetic changes Antarctica Cephalopods Stable isotopes Climate change South Pacific [SDE]Environmental Sciences Queirós, José Pedro Hilário, José Ana Thompson, David Ceia, Filipe R. Elliott, Graeme Walker, Kath Cherel, Yves Xavier, Jose C From warm to cold waters: new insights into the habitat and trophic ecology of Southern Oceansquids throughout their life cycle |
topic_facet |
Ontogenetic changes Antarctica Cephalopods Stable isotopes Climate change South Pacific [SDE]Environmental Sciences |
description |
International audience Cephalopods play a major role in marine ecosystems, yet very little is known aboutthe dynamics of their habitat use and trophic ecology across the stages of their life cycle, particu-larly in the Southern Ocean. Here, we used stable isotope analyses of δ13C (a proxy for foraginghabitat) and δ15N (a proxy for trophic position) to investigate the habitat use and trophic eco logyof 10 squid species, collected from the diet of Antipodean (Diomedea antipodensis antipodensis)and Gibson’s (D. a. gibsoni)albatrosses breeding at Antipodes and Adams Island (South Pacific),respectively. We analyzed isotopes in 2 sections of squid lower beaks, representing 2 stages of thelife cycle: the tip of the rostrum (juvenile stage) and the wing (adult stage). Higher δ13C values inearly life stages (−20.8 ± 1.7 ‰) than in adult life stages (−21.6 ± 1.9 ‰) suggest that SouthernOcean squids tend to move southwards as they grow, with oceanic fronts being an important habi-tat for these species. Our results might indicate that adults may move southwards with climatechange, possibly impacting top predators living on northern islands. Overall, δ15N values revealedan increase in trophic position from early (6.7 ± 2.7 ‰) to adult life stages (9.0 ± 2.5 ‰) in all spe-cies. Nevertheless, significant differences between δ15N values of the 10 species, in both beak sec-tions, suggest different feeding strategies between species and life stages. |
author2 |
Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
format |
Article in Journal/Newspaper |
author |
Queirós, José Pedro Hilário, José Ana Thompson, David Ceia, Filipe R. Elliott, Graeme Walker, Kath Cherel, Yves Xavier, Jose C |
author_facet |
Queirós, José Pedro Hilário, José Ana Thompson, David Ceia, Filipe R. Elliott, Graeme Walker, Kath Cherel, Yves Xavier, Jose C |
author_sort |
Queirós, José Pedro |
title |
From warm to cold waters: new insights into the habitat and trophic ecology of Southern Oceansquids throughout their life cycle |
title_short |
From warm to cold waters: new insights into the habitat and trophic ecology of Southern Oceansquids throughout their life cycle |
title_full |
From warm to cold waters: new insights into the habitat and trophic ecology of Southern Oceansquids throughout their life cycle |
title_fullStr |
From warm to cold waters: new insights into the habitat and trophic ecology of Southern Oceansquids throughout their life cycle |
title_full_unstemmed |
From warm to cold waters: new insights into the habitat and trophic ecology of Southern Oceansquids throughout their life cycle |
title_sort |
from warm to cold waters: new insights into the habitat and trophic ecology of southern oceansquids throughout their life cycle |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-03003260 https://doi.org/10.3354/meps13551 |
long_lat |
ENVELOPE(92.550,92.550,-66.550,-66.550) |
geographic |
Adams Island Pacific Southern Ocean |
geographic_facet |
Adams Island Pacific Southern Ocean |
genre |
Adams Island Antarc* Antarctica Southern Ocean |
genre_facet |
Adams Island Antarc* Antarctica Southern Ocean |
op_source |
ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.science/hal-03003260 Marine Ecology Progress Series, 2020, 659, pp.113-126. ⟨10.3354/meps13551⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps13551 hal-03003260 https://hal.science/hal-03003260 doi:10.3354/meps13551 |
op_doi |
https://doi.org/10.3354/meps13551 |
container_title |
Marine Ecology Progress Series |
container_volume |
659 |
container_start_page |
113 |
op_container_end_page |
126 |
_version_ |
1790598860722143232 |