Using DNA Metabarcoding to Characterize the Prey Spectrum of Two Co-Occurring Themisto Amphipods in the Rapidly Changing Atlantic-Arctic Gateway Fram Strait
The two congeneric hyperiids Themisto libellula and T. abyssorum provide an important trophic link between lower and higher trophic levels in the rapidly changing Arctic marine ecosystem. These amphipods are characterized by distinct hydrographic affinities and are hence anticipated to be impacted d...
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ftpubmed:oai:pubmedcentral.nih.gov:9690572 2023-05-15T14:52:32+02:00 Using DNA Metabarcoding to Characterize the Prey Spectrum of Two Co-Occurring Themisto Amphipods in the Rapidly Changing Atlantic-Arctic Gateway Fram Strait Dischereit, Annkathrin Wangensteen, Owen S. Præbel, Kim Auel, Holger Havermans, Charlotte 2022-11-04 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9690572/ http://www.ncbi.nlm.nih.gov/pubmed/36360272 https://doi.org/10.3390/genes13112035 en eng MDPI http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9690572/ http://www.ncbi.nlm.nih.gov/pubmed/36360272 http://dx.doi.org/10.3390/genes13112035 © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). CC-BY Genes (Basel) Article Text 2022 ftpubmed https://doi.org/10.3390/genes13112035 2022-11-27T02:11:45Z The two congeneric hyperiids Themisto libellula and T. abyssorum provide an important trophic link between lower and higher trophic levels in the rapidly changing Arctic marine ecosystem. These amphipods are characterized by distinct hydrographic affinities and are hence anticipated to be impacted differently by environmental changes, with major consequences for the Arctic food web. In this study, we applied DNA metabarcoding to the stomach contents of these Themisto species, to comprehensively reveal their prey spectra at an unprecedented-high-taxonomic-resolution and assess the regional variation in their diet across the Fram Strait. Both species feed on a wide variety of prey but their diet strongly differed in the investigated summer season, showing overlap for only a few prey taxa, such as calanoid copepods. The spatially structured prey field of T. libellula clearly differentiated it from T. abyssorum, of which the diet was mainly dominated by chaetognaths. Our approach also allowed the detection of previously overlooked prey in the diet of T. libellula, such as fish species and gelatinous zooplankton. We discuss the reasons for the differences in prey spectra and which consequences these may have in the light of ongoing environmental changes. Text Arctic Atlantic Arctic Atlantic-Arctic Fram Strait Themisto Themisto libellula Zooplankton Copepods PubMed Central (PMC) Arctic Genes 13 11 2035 |
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Article Dischereit, Annkathrin Wangensteen, Owen S. Præbel, Kim Auel, Holger Havermans, Charlotte Using DNA Metabarcoding to Characterize the Prey Spectrum of Two Co-Occurring Themisto Amphipods in the Rapidly Changing Atlantic-Arctic Gateway Fram Strait |
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The two congeneric hyperiids Themisto libellula and T. abyssorum provide an important trophic link between lower and higher trophic levels in the rapidly changing Arctic marine ecosystem. These amphipods are characterized by distinct hydrographic affinities and are hence anticipated to be impacted differently by environmental changes, with major consequences for the Arctic food web. In this study, we applied DNA metabarcoding to the stomach contents of these Themisto species, to comprehensively reveal their prey spectra at an unprecedented-high-taxonomic-resolution and assess the regional variation in their diet across the Fram Strait. Both species feed on a wide variety of prey but their diet strongly differed in the investigated summer season, showing overlap for only a few prey taxa, such as calanoid copepods. The spatially structured prey field of T. libellula clearly differentiated it from T. abyssorum, of which the diet was mainly dominated by chaetognaths. Our approach also allowed the detection of previously overlooked prey in the diet of T. libellula, such as fish species and gelatinous zooplankton. We discuss the reasons for the differences in prey spectra and which consequences these may have in the light of ongoing environmental changes. |
format |
Text |
author |
Dischereit, Annkathrin Wangensteen, Owen S. Præbel, Kim Auel, Holger Havermans, Charlotte |
author_facet |
Dischereit, Annkathrin Wangensteen, Owen S. Præbel, Kim Auel, Holger Havermans, Charlotte |
author_sort |
Dischereit, Annkathrin |
title |
Using DNA Metabarcoding to Characterize the Prey Spectrum of Two Co-Occurring Themisto Amphipods in the Rapidly Changing Atlantic-Arctic Gateway Fram Strait |
title_short |
Using DNA Metabarcoding to Characterize the Prey Spectrum of Two Co-Occurring Themisto Amphipods in the Rapidly Changing Atlantic-Arctic Gateway Fram Strait |
title_full |
Using DNA Metabarcoding to Characterize the Prey Spectrum of Two Co-Occurring Themisto Amphipods in the Rapidly Changing Atlantic-Arctic Gateway Fram Strait |
title_fullStr |
Using DNA Metabarcoding to Characterize the Prey Spectrum of Two Co-Occurring Themisto Amphipods in the Rapidly Changing Atlantic-Arctic Gateway Fram Strait |
title_full_unstemmed |
Using DNA Metabarcoding to Characterize the Prey Spectrum of Two Co-Occurring Themisto Amphipods in the Rapidly Changing Atlantic-Arctic Gateway Fram Strait |
title_sort |
using dna metabarcoding to characterize the prey spectrum of two co-occurring themisto amphipods in the rapidly changing atlantic-arctic gateway fram strait |
publisher |
MDPI |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9690572/ http://www.ncbi.nlm.nih.gov/pubmed/36360272 https://doi.org/10.3390/genes13112035 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Atlantic Arctic Atlantic-Arctic Fram Strait Themisto Themisto libellula Zooplankton Copepods |
genre_facet |
Arctic Atlantic Arctic Atlantic-Arctic Fram Strait Themisto Themisto libellula Zooplankton Copepods |
op_source |
Genes (Basel) |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9690572/ http://www.ncbi.nlm.nih.gov/pubmed/36360272 http://dx.doi.org/10.3390/genes13112035 |
op_rights |
© 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/genes13112035 |
container_title |
Genes |
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13 |
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11 |
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2035 |
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1766323763180208128 |