Physiological adaptations in Coleoptera on Spitsbergen
Metabolic rates and Qlo values were determined for three species of Spitsbergen Coleoptera, Amara quenseli, Simplocaria metallica and Rhynchaenw flagellum. The beetles had metabolic rates which were elevated compared to values of Coleoptera from other regions. This is interpreted as an adaptation to...
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Norwegian Polar Institute
1986
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ftjpolarres:oai:journals.openacademia.net:article/2504 2023-05-15T18:02:40+02:00 Physiological adaptations in Coleoptera on Spitsbergen Strømme, John Alexander Ngari, Thomas Wanjohi Zachariassen, Karl Erik 1986-01-12 application/pdf https://polarresearch.net/index.php/polar/article/view/2504 https://doi.org/10.3402/polar.v4i2.6932 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/2504/5755 https://polarresearch.net/index.php/polar/article/view/2504 doi:10.3402/polar.v4i2.6932 Copyright (c) 2018 Polar Research Polar Research; Vol. 4 No. 2 (1986); 199-204 1751-8369 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1986 ftjpolarres https://doi.org/10.3402/polar.v4i2.6932 2021-11-11T19:12:43Z Metabolic rates and Qlo values were determined for three species of Spitsbergen Coleoptera, Amara quenseli, Simplocaria metallica and Rhynchaenw flagellum. The beetles had metabolic rates which were elevated compared to values of Coleoptera from other regions. This is interpreted as an adaptation to the prevailing low temperatures and short activity period on Spitsbergen. A. quenseli had rates of water loss comparable to values of beetles in temperate and tropical xeric habitats, indicating that the habitat of the beetles on Spitsbergen at least occasionally is xeric. Determination of cold-hardiness parameters such as supercooling point and haemolymph melting point of A. quenseli beetles revealed that the beetles had values corresponding to those of active insects in the temperate and tropical region. They had no thermal hysteresis factors. Thus, during summer they show no physiological adaptations to cold. Article in Journal/Newspaper Polar Research Spitsbergen Polar Research (E-Journal) Polar Research 4 2 199 204 |
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Polar Research (E-Journal) |
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ftjpolarres |
language |
English |
description |
Metabolic rates and Qlo values were determined for three species of Spitsbergen Coleoptera, Amara quenseli, Simplocaria metallica and Rhynchaenw flagellum. The beetles had metabolic rates which were elevated compared to values of Coleoptera from other regions. This is interpreted as an adaptation to the prevailing low temperatures and short activity period on Spitsbergen. A. quenseli had rates of water loss comparable to values of beetles in temperate and tropical xeric habitats, indicating that the habitat of the beetles on Spitsbergen at least occasionally is xeric. Determination of cold-hardiness parameters such as supercooling point and haemolymph melting point of A. quenseli beetles revealed that the beetles had values corresponding to those of active insects in the temperate and tropical region. They had no thermal hysteresis factors. Thus, during summer they show no physiological adaptations to cold. |
format |
Article in Journal/Newspaper |
author |
Strømme, John Alexander Ngari, Thomas Wanjohi Zachariassen, Karl Erik |
spellingShingle |
Strømme, John Alexander Ngari, Thomas Wanjohi Zachariassen, Karl Erik Physiological adaptations in Coleoptera on Spitsbergen |
author_facet |
Strømme, John Alexander Ngari, Thomas Wanjohi Zachariassen, Karl Erik |
author_sort |
Strømme, John Alexander |
title |
Physiological adaptations in Coleoptera on Spitsbergen |
title_short |
Physiological adaptations in Coleoptera on Spitsbergen |
title_full |
Physiological adaptations in Coleoptera on Spitsbergen |
title_fullStr |
Physiological adaptations in Coleoptera on Spitsbergen |
title_full_unstemmed |
Physiological adaptations in Coleoptera on Spitsbergen |
title_sort |
physiological adaptations in coleoptera on spitsbergen |
publisher |
Norwegian Polar Institute |
publishDate |
1986 |
url |
https://polarresearch.net/index.php/polar/article/view/2504 https://doi.org/10.3402/polar.v4i2.6932 |
genre |
Polar Research Spitsbergen |
genre_facet |
Polar Research Spitsbergen |
op_source |
Polar Research; Vol. 4 No. 2 (1986); 199-204 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/2504/5755 https://polarresearch.net/index.php/polar/article/view/2504 doi:10.3402/polar.v4i2.6932 |
op_rights |
Copyright (c) 2018 Polar Research |
op_doi |
https://doi.org/10.3402/polar.v4i2.6932 |
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Polar Research |
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4 |
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2 |
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199 |
op_container_end_page |
204 |
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1766173105023090688 |