Midtrophic fish feeding modes at the poles: an ecomorphological comparison of polar cod (Boreogadus saida) and Antarctic silverfish (Pleuragramma antarctica)
The polar cod (Boreogadus saida) and the Antarctic silverfish (Pleuragramma antarctica) are pelagic fish endemic to the Arctic and Antarctica sea, respectively. Both species are abundant and play a central role as midtrophic wasp-waist species in polar ecosystems. Due to their biological and ecologi...
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Springer Science and Business Media Deutschland GmbH
2021
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Online Access: | http://hdl.handle.net/11567/1055309 https://doi.org/10.1007/s00300-021-02900-w |
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ftunivgenova:oai:iris.unige.it:11567/1055309 2024-02-11T09:57:34+01:00 Midtrophic fish feeding modes at the poles: an ecomorphological comparison of polar cod (Boreogadus saida) and Antarctic silverfish (Pleuragramma antarctica) Carlig E. Christiansen J. S. Di Blasi D. Ferrando S. Pisano E. Vacchi M. O'Driscoll R. L. Ghigliotti L. Carlig, E. Christiansen, J. S. Di Blasi, D. Ferrando, S. Pisano, E. Vacchi, M. O'Driscoll, R. L. Ghigliotti, L. 2021 ELETTRONICO http://hdl.handle.net/11567/1055309 https://doi.org/10.1007/s00300-021-02900-w eng eng Springer Science and Business Media Deutschland GmbH country:DEU place:ONE NEW YORK PLAZA, SUITE 4600, NEW YORK, NY, UNITED STATES info:eu-repo/semantics/altIdentifier/wos/WOS:000663687700001 volume:44 firstpage:1629 lastpage:1642 numberofpages:14 journal:POLAR BIOLOGY http://hdl.handle.net/11567/1055309 doi:10.1007/s00300-021-02900-w info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85108320394 Antarctic silverfish Ecomorphology Feeding strategy Gill raker Jaw mechanic Polar cod info:eu-repo/semantics/article 2021 ftunivgenova https://doi.org/10.1007/s00300-021-02900-w 2024-01-24T17:46:48Z The polar cod (Boreogadus saida) and the Antarctic silverfish (Pleuragramma antarctica) are pelagic fish endemic to the Arctic and Antarctica sea, respectively. Both species are abundant and play a central role as midtrophic wasp-waist species in polar ecosystems. Due to their biological and ecological characteristics (small size, complex life histories, relatively short generation cycles, movement capability, planktivorous diet, and importance as prey), the polar cod and the Antarctic silverfish are potentially good sentinels of ecosystem change. Changes in polar zooplankton communities are well documented. How changes impact ecosystems as a whole largely depend on the degree of diet specialization and feeding flexibility of midtrophic species. Here, we provide the ecomorphological characterization of polar cod and Antarctic silverfish feeding performances. A comparative functional ecology approach, based on the analysis of morpho-anatomical traits, including calculation of suction index and mechanical advantage in jaw closing, was applied to profile the feeding modes and flexibility of the two species. Ecomorphological evidence supports differences in food acquisition: the polar cod appears able to alternate particulate ram-suction feeding to a pump filter feeding, and the Antarctic silverfish results be both a particulate ram and a tow-net filter feeder. Both species exhibit opportunistic feeding strategies and appear able to switch feeding mode according to the abundance and size of the available prey, which is a clue of potential resilience to a changing environment. Article in Journal/Newspaper Antarc* Antarctic Antarctic silverfish Antarctica Arctic Boreogadus saida polar cod Zooplankton Università degli Studi di Genova: CINECA IRIS Antarctic Arctic The Antarctic Polar Biology 44 8 1629 1642 |
institution |
Open Polar |
collection |
Università degli Studi di Genova: CINECA IRIS |
op_collection_id |
ftunivgenova |
language |
English |
topic |
Antarctic silverfish Ecomorphology Feeding strategy Gill raker Jaw mechanic Polar cod |
spellingShingle |
Antarctic silverfish Ecomorphology Feeding strategy Gill raker Jaw mechanic Polar cod Carlig E. Christiansen J. S. Di Blasi D. Ferrando S. Pisano E. Vacchi M. O'Driscoll R. L. Ghigliotti L. Midtrophic fish feeding modes at the poles: an ecomorphological comparison of polar cod (Boreogadus saida) and Antarctic silverfish (Pleuragramma antarctica) |
topic_facet |
Antarctic silverfish Ecomorphology Feeding strategy Gill raker Jaw mechanic Polar cod |
description |
The polar cod (Boreogadus saida) and the Antarctic silverfish (Pleuragramma antarctica) are pelagic fish endemic to the Arctic and Antarctica sea, respectively. Both species are abundant and play a central role as midtrophic wasp-waist species in polar ecosystems. Due to their biological and ecological characteristics (small size, complex life histories, relatively short generation cycles, movement capability, planktivorous diet, and importance as prey), the polar cod and the Antarctic silverfish are potentially good sentinels of ecosystem change. Changes in polar zooplankton communities are well documented. How changes impact ecosystems as a whole largely depend on the degree of diet specialization and feeding flexibility of midtrophic species. Here, we provide the ecomorphological characterization of polar cod and Antarctic silverfish feeding performances. A comparative functional ecology approach, based on the analysis of morpho-anatomical traits, including calculation of suction index and mechanical advantage in jaw closing, was applied to profile the feeding modes and flexibility of the two species. Ecomorphological evidence supports differences in food acquisition: the polar cod appears able to alternate particulate ram-suction feeding to a pump filter feeding, and the Antarctic silverfish results be both a particulate ram and a tow-net filter feeder. Both species exhibit opportunistic feeding strategies and appear able to switch feeding mode according to the abundance and size of the available prey, which is a clue of potential resilience to a changing environment. |
author2 |
Carlig, E. Christiansen, J. S. Di Blasi, D. Ferrando, S. Pisano, E. Vacchi, M. O'Driscoll, R. L. Ghigliotti, L. |
format |
Article in Journal/Newspaper |
author |
Carlig E. Christiansen J. S. Di Blasi D. Ferrando S. Pisano E. Vacchi M. O'Driscoll R. L. Ghigliotti L. |
author_facet |
Carlig E. Christiansen J. S. Di Blasi D. Ferrando S. Pisano E. Vacchi M. O'Driscoll R. L. Ghigliotti L. |
author_sort |
Carlig E. |
title |
Midtrophic fish feeding modes at the poles: an ecomorphological comparison of polar cod (Boreogadus saida) and Antarctic silverfish (Pleuragramma antarctica) |
title_short |
Midtrophic fish feeding modes at the poles: an ecomorphological comparison of polar cod (Boreogadus saida) and Antarctic silverfish (Pleuragramma antarctica) |
title_full |
Midtrophic fish feeding modes at the poles: an ecomorphological comparison of polar cod (Boreogadus saida) and Antarctic silverfish (Pleuragramma antarctica) |
title_fullStr |
Midtrophic fish feeding modes at the poles: an ecomorphological comparison of polar cod (Boreogadus saida) and Antarctic silverfish (Pleuragramma antarctica) |
title_full_unstemmed |
Midtrophic fish feeding modes at the poles: an ecomorphological comparison of polar cod (Boreogadus saida) and Antarctic silverfish (Pleuragramma antarctica) |
title_sort |
midtrophic fish feeding modes at the poles: an ecomorphological comparison of polar cod (boreogadus saida) and antarctic silverfish (pleuragramma antarctica) |
publisher |
Springer Science and Business Media Deutschland GmbH |
publishDate |
2021 |
url |
http://hdl.handle.net/11567/1055309 https://doi.org/10.1007/s00300-021-02900-w |
geographic |
Antarctic Arctic The Antarctic |
geographic_facet |
Antarctic Arctic The Antarctic |
genre |
Antarc* Antarctic Antarctic silverfish Antarctica Arctic Boreogadus saida polar cod Zooplankton |
genre_facet |
Antarc* Antarctic Antarctic silverfish Antarctica Arctic Boreogadus saida polar cod Zooplankton |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000663687700001 volume:44 firstpage:1629 lastpage:1642 numberofpages:14 journal:POLAR BIOLOGY http://hdl.handle.net/11567/1055309 doi:10.1007/s00300-021-02900-w info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85108320394 |
op_doi |
https://doi.org/10.1007/s00300-021-02900-w |
container_title |
Polar Biology |
container_volume |
44 |
container_issue |
8 |
container_start_page |
1629 |
op_container_end_page |
1642 |
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1790593103753641984 |