Molecular tools prove little auks from Svalbard are extremely selective for Calanus glacialis even when exposed to Atlantification
Two Calanus species, C. glacialis and C. finmarchicus, due to different life strategies and environmental preferences act as an ecological indicators of Arctic Atlantification. Their high lipid content makes them important food source for higher trophic levels of Arctic ecosystems including the most...
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Online Access: | https://hdl.handle.net/10037/30325 https://doi.org/10.1038/s41598-023-40131-7 |
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ftunivtroemsoe:oai:munin.uit.no:10037/30325 2023-09-26T15:09:03+02:00 Molecular tools prove little auks from Svalbard are extremely selective for Calanus glacialis even when exposed to Atlantification Balazy, Kaja Trudnowska, Emilia Wojczulanis-Jakubas, Katarzyna Jakubas, Dariusz Præbel, Kim Choquet, Marvin Brandner, Melissa Michelle Schultz, Mads Bitz-Thorsen, Julie Boehnke, Rafał Szeligowska, Marlena Descamps, Sebastien Strøm, Hallvard Blachowiak-Samolyk, Kasia 2023-08-22 https://hdl.handle.net/10037/30325 https://doi.org/10.1038/s41598-023-40131-7 eng eng Springer Nature Scientific Reports Balazy K, Trudnowska E, Wojczulanis-Jakubas K, Jakubas D, Præbel K, Choquet M, Brandner MM, Schultz M, Bitz-Thorsen J, Boehnke R, Szeligowska M, Descamps S, Strøm H, Blachowiak-Samolyk K. Molecular tools prove little auks from Svalbard are extremely selective for Calanus glacialis even when exposed to Atlantification. Scientific Reports. 2023 FRIDAID 2168982 https://doi.org/10.1038/s41598-023-40131-7 2045-2322 https://hdl.handle.net/10037/30325 Attribution 4.0 International (CC BY 4.0) openAccess Copyright 2023 The Author(s) https://creativecommons.org/licenses/by/4.0 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2023 ftunivtroemsoe https://doi.org/10.1038/s41598-023-40131-7 2023-08-30T23:07:26Z Two Calanus species, C. glacialis and C. finmarchicus, due to different life strategies and environmental preferences act as an ecological indicators of Arctic Atlantification. Their high lipid content makes them important food source for higher trophic levels of Arctic ecosystems including the most abundant Northern Hemisphere's seabird, the little auk (Alle alle). Recent studies indicate a critical need for the use of molecular methods to reliably identify these two sympatric Calanus species. We performed genetic and morphology-based identification of 2600 Calanus individuals collected in little auks foraging grounds and diet in summer seasons 2019–2021 in regions of Svalbard with varying levels of Atlantification. Genetic identification proved that 40% of Calanus individuals were wrongly classified as C. finmarchicus according to morphology-based identification in both types of samples. The diet of little auks consisted almost entirely of C. glacialis even in more Atlantified regions. Due to the substantial bias in morphology-based identification, we expect that the scale of the northern expansion of boreal C. finmarchicus may have been largely overestimated and that higher costs for birds exposed to Atlantification could be mostly driven by a decrease in the size of C. glacialis rather than by shift from C. glacialis to C. finmarchicus. Article in Journal/Newspaper Alle alle Arctic Calanus glacialis little auk Svalbard University of Tromsø: Munin Open Research Archive Arctic Svalbard Scientific Reports 13 1 |
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University of Tromsø: Munin Open Research Archive |
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ftunivtroemsoe |
language |
English |
description |
Two Calanus species, C. glacialis and C. finmarchicus, due to different life strategies and environmental preferences act as an ecological indicators of Arctic Atlantification. Their high lipid content makes them important food source for higher trophic levels of Arctic ecosystems including the most abundant Northern Hemisphere's seabird, the little auk (Alle alle). Recent studies indicate a critical need for the use of molecular methods to reliably identify these two sympatric Calanus species. We performed genetic and morphology-based identification of 2600 Calanus individuals collected in little auks foraging grounds and diet in summer seasons 2019–2021 in regions of Svalbard with varying levels of Atlantification. Genetic identification proved that 40% of Calanus individuals were wrongly classified as C. finmarchicus according to morphology-based identification in both types of samples. The diet of little auks consisted almost entirely of C. glacialis even in more Atlantified regions. Due to the substantial bias in morphology-based identification, we expect that the scale of the northern expansion of boreal C. finmarchicus may have been largely overestimated and that higher costs for birds exposed to Atlantification could be mostly driven by a decrease in the size of C. glacialis rather than by shift from C. glacialis to C. finmarchicus. |
format |
Article in Journal/Newspaper |
author |
Balazy, Kaja Trudnowska, Emilia Wojczulanis-Jakubas, Katarzyna Jakubas, Dariusz Præbel, Kim Choquet, Marvin Brandner, Melissa Michelle Schultz, Mads Bitz-Thorsen, Julie Boehnke, Rafał Szeligowska, Marlena Descamps, Sebastien Strøm, Hallvard Blachowiak-Samolyk, Kasia |
spellingShingle |
Balazy, Kaja Trudnowska, Emilia Wojczulanis-Jakubas, Katarzyna Jakubas, Dariusz Præbel, Kim Choquet, Marvin Brandner, Melissa Michelle Schultz, Mads Bitz-Thorsen, Julie Boehnke, Rafał Szeligowska, Marlena Descamps, Sebastien Strøm, Hallvard Blachowiak-Samolyk, Kasia Molecular tools prove little auks from Svalbard are extremely selective for Calanus glacialis even when exposed to Atlantification |
author_facet |
Balazy, Kaja Trudnowska, Emilia Wojczulanis-Jakubas, Katarzyna Jakubas, Dariusz Præbel, Kim Choquet, Marvin Brandner, Melissa Michelle Schultz, Mads Bitz-Thorsen, Julie Boehnke, Rafał Szeligowska, Marlena Descamps, Sebastien Strøm, Hallvard Blachowiak-Samolyk, Kasia |
author_sort |
Balazy, Kaja |
title |
Molecular tools prove little auks from Svalbard are extremely selective for Calanus glacialis even when exposed to Atlantification |
title_short |
Molecular tools prove little auks from Svalbard are extremely selective for Calanus glacialis even when exposed to Atlantification |
title_full |
Molecular tools prove little auks from Svalbard are extremely selective for Calanus glacialis even when exposed to Atlantification |
title_fullStr |
Molecular tools prove little auks from Svalbard are extremely selective for Calanus glacialis even when exposed to Atlantification |
title_full_unstemmed |
Molecular tools prove little auks from Svalbard are extremely selective for Calanus glacialis even when exposed to Atlantification |
title_sort |
molecular tools prove little auks from svalbard are extremely selective for calanus glacialis even when exposed to atlantification |
publisher |
Springer Nature |
publishDate |
2023 |
url |
https://hdl.handle.net/10037/30325 https://doi.org/10.1038/s41598-023-40131-7 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Alle alle Arctic Calanus glacialis little auk Svalbard |
genre_facet |
Alle alle Arctic Calanus glacialis little auk Svalbard |
op_relation |
Scientific Reports Balazy K, Trudnowska E, Wojczulanis-Jakubas K, Jakubas D, Præbel K, Choquet M, Brandner MM, Schultz M, Bitz-Thorsen J, Boehnke R, Szeligowska M, Descamps S, Strøm H, Blachowiak-Samolyk K. Molecular tools prove little auks from Svalbard are extremely selective for Calanus glacialis even when exposed to Atlantification. Scientific Reports. 2023 FRIDAID 2168982 https://doi.org/10.1038/s41598-023-40131-7 2045-2322 https://hdl.handle.net/10037/30325 |
op_rights |
Attribution 4.0 International (CC BY 4.0) openAccess Copyright 2023 The Author(s) https://creativecommons.org/licenses/by/4.0 |
op_doi |
https://doi.org/10.1038/s41598-023-40131-7 |
container_title |
Scientific Reports |
container_volume |
13 |
container_issue |
1 |
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1778132601064652800 |