The physiological response of Northern krill (Meganyctiphanes norvegica) to temperature gradients in the Kattegat
AbstractThe Alkor-Deep (140 m), which forms part of a depression system in the northern Kattegat channel east of the island of Læsø (Denmark), is the location of a self sustaining population of Northern krill, Meganyctiphanes norvegica (Euphausiacea). This population is exposed to one of the most pr...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2000
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/3745/ https://epic.awi.de/id/eprint/3745/1/Sab1999b.pdf https://hdl.handle.net/10013/epic.14323 https://hdl.handle.net/10013/epic.14323.d001 |
id |
ftawi:oai:epic.awi.de:3745 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:3745 2024-09-15T18:18:24+00:00 The physiological response of Northern krill (Meganyctiphanes norvegica) to temperature gradients in the Kattegat Saborowski, Reinhard Salomon, M. Buchholz, Friedrich 2000 application/pdf https://epic.awi.de/id/eprint/3745/ https://epic.awi.de/id/eprint/3745/1/Sab1999b.pdf https://hdl.handle.net/10013/epic.14323 https://hdl.handle.net/10013/epic.14323.d001 unknown https://epic.awi.de/id/eprint/3745/1/Sab1999b.pdf https://hdl.handle.net/10013/epic.14323.d001 Saborowski, R. orcid:0000-0003-0289-6501 , Salomon, M. and Buchholz, F. (2000) The physiological response of Northern krill (Meganyctiphanes norvegica) to temperature gradients in the Kattegat , Hydrobiologia, 426 , pp. 157-160 . hdl:10013/epic.14323 EPIC3Hydrobiologia, 426, pp. 157-160 Article isiRev 2000 ftawi 2024-06-24T03:54:11Z AbstractThe Alkor-Deep (140 m), which forms part of a depression system in the northern Kattegat channel east of the island of Læsø (Denmark), is the location of a self sustaining population of Northern krill, Meganyctiphanes norvegica (Euphausiacea). This population is exposed to one of the most pronounced thermal gradients within the distributional range of this pelagic crustacean. During summer, the tem-perature of the water column ranges between 4 to 6 °C in the deep to 16 °C near the surface which results in the krill being exposed to temperature differences of 8 to 10 °C during diel vertical migration. Oxygen consumption rates were used to investigate the physiological adaptation of the animal to such gradients in temperature. The rates were found to increase exponentially from 31 µmolO2·h-1·gdw-1 at 4 °C to 72 µmolO2·h-1·gdw-1 at 16 °C, giving a Q10-value of 2.0, and indicating that physiological adaptation to varying thermal conditions does not take place. Behavioural adaptations are discussed which may help the krill to cope with large temperature gradients in their environment. Article in Journal/Newspaper Meganyctiphanes norvegica Northern krill Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
AbstractThe Alkor-Deep (140 m), which forms part of a depression system in the northern Kattegat channel east of the island of Læsø (Denmark), is the location of a self sustaining population of Northern krill, Meganyctiphanes norvegica (Euphausiacea). This population is exposed to one of the most pronounced thermal gradients within the distributional range of this pelagic crustacean. During summer, the tem-perature of the water column ranges between 4 to 6 °C in the deep to 16 °C near the surface which results in the krill being exposed to temperature differences of 8 to 10 °C during diel vertical migration. Oxygen consumption rates were used to investigate the physiological adaptation of the animal to such gradients in temperature. The rates were found to increase exponentially from 31 µmolO2·h-1·gdw-1 at 4 °C to 72 µmolO2·h-1·gdw-1 at 16 °C, giving a Q10-value of 2.0, and indicating that physiological adaptation to varying thermal conditions does not take place. Behavioural adaptations are discussed which may help the krill to cope with large temperature gradients in their environment. |
format |
Article in Journal/Newspaper |
author |
Saborowski, Reinhard Salomon, M. Buchholz, Friedrich |
spellingShingle |
Saborowski, Reinhard Salomon, M. Buchholz, Friedrich The physiological response of Northern krill (Meganyctiphanes norvegica) to temperature gradients in the Kattegat |
author_facet |
Saborowski, Reinhard Salomon, M. Buchholz, Friedrich |
author_sort |
Saborowski, Reinhard |
title |
The physiological response of Northern krill (Meganyctiphanes norvegica) to temperature gradients in the Kattegat |
title_short |
The physiological response of Northern krill (Meganyctiphanes norvegica) to temperature gradients in the Kattegat |
title_full |
The physiological response of Northern krill (Meganyctiphanes norvegica) to temperature gradients in the Kattegat |
title_fullStr |
The physiological response of Northern krill (Meganyctiphanes norvegica) to temperature gradients in the Kattegat |
title_full_unstemmed |
The physiological response of Northern krill (Meganyctiphanes norvegica) to temperature gradients in the Kattegat |
title_sort |
physiological response of northern krill (meganyctiphanes norvegica) to temperature gradients in the kattegat |
publishDate |
2000 |
url |
https://epic.awi.de/id/eprint/3745/ https://epic.awi.de/id/eprint/3745/1/Sab1999b.pdf https://hdl.handle.net/10013/epic.14323 https://hdl.handle.net/10013/epic.14323.d001 |
genre |
Meganyctiphanes norvegica Northern krill |
genre_facet |
Meganyctiphanes norvegica Northern krill |
op_source |
EPIC3Hydrobiologia, 426, pp. 157-160 |
op_relation |
https://epic.awi.de/id/eprint/3745/1/Sab1999b.pdf https://hdl.handle.net/10013/epic.14323.d001 Saborowski, R. orcid:0000-0003-0289-6501 , Salomon, M. and Buchholz, F. (2000) The physiological response of Northern krill (Meganyctiphanes norvegica) to temperature gradients in the Kattegat , Hydrobiologia, 426 , pp. 157-160 . hdl:10013/epic.14323 |
_version_ |
1810456519215415296 |