Potential misidentifications of two climate indicator species of the marine arctic ecosystem: Calanus glacialis and C. finmarchicus
Calanoid copepods of the genus Calanus represent an important, nutrient-rich food source for a multitude of Arctic marine organisms. Although morphologically very similar, their life histories and ecological roles differ. Because the distribution of Calanus glacialis and C. finmarchicus corresponds...
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Language: | English |
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Springer Verlag
2012
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ftunivtroemsoe:oai:munin.uit.no:10037/4980 2023-05-15T14:46:09+02:00 Potential misidentifications of two climate indicator species of the marine arctic ecosystem: Calanus glacialis and C. finmarchicus Gabrielsen, Tove M Merkel, Benjamin Søreide, Janne Johansson-Karlsson, Emma Bailey, Allison Vogedes, Daniel Ludwig Nygård, Henrik Andreas Varpe, Øystein Berge, Jørgen 2012 https://hdl.handle.net/10037/4980 https://doi.org/10.1007/s00300-012-1202-7 eng eng Springer Verlag Polar Biology 35(2012) nr. 11 s. 1621-1628 FRIDAID 974126 http://dx.doi.org/10.1007/s00300-012-1202-7 0722-4060 https://hdl.handle.net/10037/4980 URN:NBN:no-uit_munin_4733 openAccess VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoophysiology and comparative physiology: 483 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoofysiologi og komparativ fysiologi: 483 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecotoxicology: 489 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økotoksikologi: 489 Journal article Tidsskriftartikkel Peer reviewed 2012 ftunivtroemsoe https://doi.org/10.1007/s00300-012-1202-7 2021-06-25T17:53:32Z Calanoid copepods of the genus Calanus represent an important, nutrient-rich food source for a multitude of Arctic marine organisms. Although morphologically very similar, their life histories and ecological roles differ. Because the distribution of Calanus glacialis and C. finmarchicus corresponds to Arctic and Atlantic water masses, respectively, they are regularly used as climate indicators. A correct identification of these species is therefore necessary in many ecological, environmental and climatological studies. In this study, we aimed at validating the traditionally used morphological characteristics (combining prosome length and copepodite stage) for separation of species of Calanus by using molecular tools (PCR–RFLP of the 16S mtDNA). A total of 418 specimens of copepodite stages CIV, CV and CVI(af) from three Arctic fjords have been identified both morphologically and genetically. We find that the morphological identification systematically overestimates the abundance of C. finmarchicus at the expense of C. glacialis. Hence, parts of the C. glacialis populations are found to be structurally smaller and the within population size range thus larger than previously assumed. Consequently, using the traditional morphological species delimitation poses a serious problem in the use of these two species as indicators of Atlantic versus Arctic water masses and thus as climatic indicators. Furthermore, it obscures our understanding of the life history differences between the two species and of their relative importance as food for a number of ecologically and economically important species in the Arctic. Article in Journal/Newspaper Arctic Calanus glacialis Polar Biology Copepods University of Tromsø: Munin Open Research Archive Arctic Polar Biology 35 11 1621 1628 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoophysiology and comparative physiology: 483 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoofysiologi og komparativ fysiologi: 483 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecotoxicology: 489 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økotoksikologi: 489 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoophysiology and comparative physiology: 483 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoofysiologi og komparativ fysiologi: 483 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecotoxicology: 489 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økotoksikologi: 489 Gabrielsen, Tove M Merkel, Benjamin Søreide, Janne Johansson-Karlsson, Emma Bailey, Allison Vogedes, Daniel Ludwig Nygård, Henrik Andreas Varpe, Øystein Berge, Jørgen Potential misidentifications of two climate indicator species of the marine arctic ecosystem: Calanus glacialis and C. finmarchicus |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoophysiology and comparative physiology: 483 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoofysiologi og komparativ fysiologi: 483 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecotoxicology: 489 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økotoksikologi: 489 |
description |
Calanoid copepods of the genus Calanus represent an important, nutrient-rich food source for a multitude of Arctic marine organisms. Although morphologically very similar, their life histories and ecological roles differ. Because the distribution of Calanus glacialis and C. finmarchicus corresponds to Arctic and Atlantic water masses, respectively, they are regularly used as climate indicators. A correct identification of these species is therefore necessary in many ecological, environmental and climatological studies. In this study, we aimed at validating the traditionally used morphological characteristics (combining prosome length and copepodite stage) for separation of species of Calanus by using molecular tools (PCR–RFLP of the 16S mtDNA). A total of 418 specimens of copepodite stages CIV, CV and CVI(af) from three Arctic fjords have been identified both morphologically and genetically. We find that the morphological identification systematically overestimates the abundance of C. finmarchicus at the expense of C. glacialis. Hence, parts of the C. glacialis populations are found to be structurally smaller and the within population size range thus larger than previously assumed. Consequently, using the traditional morphological species delimitation poses a serious problem in the use of these two species as indicators of Atlantic versus Arctic water masses and thus as climatic indicators. Furthermore, it obscures our understanding of the life history differences between the two species and of their relative importance as food for a number of ecologically and economically important species in the Arctic. |
format |
Article in Journal/Newspaper |
author |
Gabrielsen, Tove M Merkel, Benjamin Søreide, Janne Johansson-Karlsson, Emma Bailey, Allison Vogedes, Daniel Ludwig Nygård, Henrik Andreas Varpe, Øystein Berge, Jørgen |
author_facet |
Gabrielsen, Tove M Merkel, Benjamin Søreide, Janne Johansson-Karlsson, Emma Bailey, Allison Vogedes, Daniel Ludwig Nygård, Henrik Andreas Varpe, Øystein Berge, Jørgen |
author_sort |
Gabrielsen, Tove M |
title |
Potential misidentifications of two climate indicator species of the marine arctic ecosystem: Calanus glacialis and C. finmarchicus |
title_short |
Potential misidentifications of two climate indicator species of the marine arctic ecosystem: Calanus glacialis and C. finmarchicus |
title_full |
Potential misidentifications of two climate indicator species of the marine arctic ecosystem: Calanus glacialis and C. finmarchicus |
title_fullStr |
Potential misidentifications of two climate indicator species of the marine arctic ecosystem: Calanus glacialis and C. finmarchicus |
title_full_unstemmed |
Potential misidentifications of two climate indicator species of the marine arctic ecosystem: Calanus glacialis and C. finmarchicus |
title_sort |
potential misidentifications of two climate indicator species of the marine arctic ecosystem: calanus glacialis and c. finmarchicus |
publisher |
Springer Verlag |
publishDate |
2012 |
url |
https://hdl.handle.net/10037/4980 https://doi.org/10.1007/s00300-012-1202-7 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Calanus glacialis Polar Biology Copepods |
genre_facet |
Arctic Calanus glacialis Polar Biology Copepods |
op_relation |
Polar Biology 35(2012) nr. 11 s. 1621-1628 FRIDAID 974126 http://dx.doi.org/10.1007/s00300-012-1202-7 0722-4060 https://hdl.handle.net/10037/4980 URN:NBN:no-uit_munin_4733 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1007/s00300-012-1202-7 |
container_title |
Polar Biology |
container_volume |
35 |
container_issue |
11 |
container_start_page |
1621 |
op_container_end_page |
1628 |
_version_ |
1766317407213715456 |