DNA metabarcoding reveals a diverse, omnivorous diet of Arctic amphipods during the polar night, with jellyfish and fish as major prey
Introduction: Currently, Arctic marine ecosystems are witnessing the most rapid physical changes worldwide, leading to shifts in pelagic and benthic communities and food web structure, concomitant with the introduction of boreal species. Gelatinous zooplankton or jellyfish represent one particular g...
Published in: | Frontiers in Marine Science |
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2024
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Online Access: | https://epic.awi.de/id/eprint/58924/ https://epic.awi.de/id/eprint/58924/1/Dischereit_etal_2024_Polar%20night.pdf https://doi.org/10.3389/fmars.2024.1327650 https://hdl.handle.net/10013/epic.7847158e-b5d4-49fe-99c7-fe910b234553 |
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ftawi:oai:epic.awi.de:58924 2024-09-15T17:51:43+00:00 DNA metabarcoding reveals a diverse, omnivorous diet of Arctic amphipods during the polar night, with jellyfish and fish as major prey Dischereit, Annkathrin Beermann, Jan Lebreton, Benoit Wangensteen, Owen S Neuhaus, Stefan Havermans, Charlotte 2024-01-01 application/pdf https://epic.awi.de/id/eprint/58924/ https://epic.awi.de/id/eprint/58924/1/Dischereit_etal_2024_Polar%20night.pdf https://doi.org/10.3389/fmars.2024.1327650 https://hdl.handle.net/10013/epic.7847158e-b5d4-49fe-99c7-fe910b234553 unknown Frontiers https://epic.awi.de/id/eprint/58924/1/Dischereit_etal_2024_Polar%20night.pdf Dischereit, A. , Beermann, J. orcid:0000-0001-5894-6817 , Lebreton, B. , Wangensteen, O. S. , Neuhaus, S. orcid:0000-0001-8245-1486 and Havermans, C. orcid:0000-0002-1126-4074 (2024) DNA metabarcoding reveals a diverse, omnivorous diet of Arctic amphipods during the polar night, with jellyfish and fish as major prey , Frontiers in Marine Science, 11 , pp. 1-16 . doi:10.3389/fmars.2024.1327650 <https://doi.org/10.3389/fmars.2024.1327650> , hdl:10013/epic.7847158e-b5d4-49fe-99c7-fe910b234553 EPIC3Frontiers in Marine Science, Frontiers, 11, 16 p., pp. 1-16, ISSN: 2296-7745 Article isiRev 2024 ftawi https://doi.org/10.3389/fmars.2024.1327650 2024-08-05T14:05:59Z Introduction: Currently, Arctic marine ecosystems are witnessing the most rapid physical changes worldwide, leading to shifts in pelagic and benthic communities and food web structure, concomitant with the introduction of boreal species. Gelatinous zooplankton or jellyfish represent one particular group of which several boreal species are prone to undergo significant poleward range expansions and population increases in the Arctic in the course of the ongoing changes. Historically, jellyfish were considered a trophic dead-end, but an increasing number of studies using modern tools have highlighted their role as major prey items in marine food webs. In this study, we aimed to verify the role of jellyfish and other metazoans as food sources in the Arctic polar night food web, when pelagic resources are limited. Methods: We identified the diet of different bentho-pelagic amphipod species in the Atlantifying Kongsfjorden (West Svalbard) during the polar night. We regularly sampled lysianassoid and gammarid amphipods using baited traps and hand nets over a period of one month during the polar night and identified their diet spectrum by applying DNA metabarcoding (COI) to their stomach contents. Results: We demonstrate that all investigated species are omnivorous. Fish species including polar cod and snailfish, likely in the shape of carrion, played an important role in the diet of the scavengers Orchomenella minuta and Anonyx sarsi. Predation and potential scavenging on jellyfish contributed to the diet of all four investigated species, particularly for the species Gammarus setosus and G. oceanicus, as evidenced by high read abundances and high frequencies of occurrence. Besides jellyfish, crustaceans and macroalgae were important components of the diet of the two Gammarus species. Discussion: The diverse jellyfish community present in Kongsfjorden in the polar night is clearly being utilized as a food source, either through pelagic feeding or feeding on jelly-falls, albeit to a different extent in the local amphipod ... Article in Journal/Newspaper Arctic Kongsfjord* Kongsfjorden polar cod polar night Svalbard Zooplankton Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Frontiers in Marine Science 11 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Introduction: Currently, Arctic marine ecosystems are witnessing the most rapid physical changes worldwide, leading to shifts in pelagic and benthic communities and food web structure, concomitant with the introduction of boreal species. Gelatinous zooplankton or jellyfish represent one particular group of which several boreal species are prone to undergo significant poleward range expansions and population increases in the Arctic in the course of the ongoing changes. Historically, jellyfish were considered a trophic dead-end, but an increasing number of studies using modern tools have highlighted their role as major prey items in marine food webs. In this study, we aimed to verify the role of jellyfish and other metazoans as food sources in the Arctic polar night food web, when pelagic resources are limited. Methods: We identified the diet of different bentho-pelagic amphipod species in the Atlantifying Kongsfjorden (West Svalbard) during the polar night. We regularly sampled lysianassoid and gammarid amphipods using baited traps and hand nets over a period of one month during the polar night and identified their diet spectrum by applying DNA metabarcoding (COI) to their stomach contents. Results: We demonstrate that all investigated species are omnivorous. Fish species including polar cod and snailfish, likely in the shape of carrion, played an important role in the diet of the scavengers Orchomenella minuta and Anonyx sarsi. Predation and potential scavenging on jellyfish contributed to the diet of all four investigated species, particularly for the species Gammarus setosus and G. oceanicus, as evidenced by high read abundances and high frequencies of occurrence. Besides jellyfish, crustaceans and macroalgae were important components of the diet of the two Gammarus species. Discussion: The diverse jellyfish community present in Kongsfjorden in the polar night is clearly being utilized as a food source, either through pelagic feeding or feeding on jelly-falls, albeit to a different extent in the local amphipod ... |
format |
Article in Journal/Newspaper |
author |
Dischereit, Annkathrin Beermann, Jan Lebreton, Benoit Wangensteen, Owen S Neuhaus, Stefan Havermans, Charlotte |
spellingShingle |
Dischereit, Annkathrin Beermann, Jan Lebreton, Benoit Wangensteen, Owen S Neuhaus, Stefan Havermans, Charlotte DNA metabarcoding reveals a diverse, omnivorous diet of Arctic amphipods during the polar night, with jellyfish and fish as major prey |
author_facet |
Dischereit, Annkathrin Beermann, Jan Lebreton, Benoit Wangensteen, Owen S Neuhaus, Stefan Havermans, Charlotte |
author_sort |
Dischereit, Annkathrin |
title |
DNA metabarcoding reveals a diverse, omnivorous diet of Arctic amphipods during the polar night, with jellyfish and fish as major prey |
title_short |
DNA metabarcoding reveals a diverse, omnivorous diet of Arctic amphipods during the polar night, with jellyfish and fish as major prey |
title_full |
DNA metabarcoding reveals a diverse, omnivorous diet of Arctic amphipods during the polar night, with jellyfish and fish as major prey |
title_fullStr |
DNA metabarcoding reveals a diverse, omnivorous diet of Arctic amphipods during the polar night, with jellyfish and fish as major prey |
title_full_unstemmed |
DNA metabarcoding reveals a diverse, omnivorous diet of Arctic amphipods during the polar night, with jellyfish and fish as major prey |
title_sort |
dna metabarcoding reveals a diverse, omnivorous diet of arctic amphipods during the polar night, with jellyfish and fish as major prey |
publisher |
Frontiers |
publishDate |
2024 |
url |
https://epic.awi.de/id/eprint/58924/ https://epic.awi.de/id/eprint/58924/1/Dischereit_etal_2024_Polar%20night.pdf https://doi.org/10.3389/fmars.2024.1327650 https://hdl.handle.net/10013/epic.7847158e-b5d4-49fe-99c7-fe910b234553 |
genre |
Arctic Kongsfjord* Kongsfjorden polar cod polar night Svalbard Zooplankton |
genre_facet |
Arctic Kongsfjord* Kongsfjorden polar cod polar night Svalbard Zooplankton |
op_source |
EPIC3Frontiers in Marine Science, Frontiers, 11, 16 p., pp. 1-16, ISSN: 2296-7745 |
op_relation |
https://epic.awi.de/id/eprint/58924/1/Dischereit_etal_2024_Polar%20night.pdf Dischereit, A. , Beermann, J. orcid:0000-0001-5894-6817 , Lebreton, B. , Wangensteen, O. S. , Neuhaus, S. orcid:0000-0001-8245-1486 and Havermans, C. orcid:0000-0002-1126-4074 (2024) DNA metabarcoding reveals a diverse, omnivorous diet of Arctic amphipods during the polar night, with jellyfish and fish as major prey , Frontiers in Marine Science, 11 , pp. 1-16 . doi:10.3389/fmars.2024.1327650 <https://doi.org/10.3389/fmars.2024.1327650> , hdl:10013/epic.7847158e-b5d4-49fe-99c7-fe910b234553 |
op_doi |
https://doi.org/10.3389/fmars.2024.1327650 |
container_title |
Frontiers in Marine Science |
container_volume |
11 |
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1810293680442966016 |