The overwintering of Antarctic krill, Euphausia superba, from an ecophysiological perspective
A major aim of this review is to determine which physiological functions are adopted by adults and larvae to survive the winter season with low food supply and their relative importance. A second aim is to clarify the extent to which seasonal variation in larval and adult krill physiology is mediate...
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ftawi:oai:epic.awi.de:25421 2023-05-15T13:46:51+02:00 The overwintering of Antarctic krill, Euphausia superba, from an ecophysiological perspective Meyer, Bettina 2011-10-13 application/pdf https://epic.awi.de/id/eprint/25421/ https://epic.awi.de/id/eprint/25421/1/Meyer_2011.pdf https://doi.org/10.1007/s00300-011-1120-0 https://hdl.handle.net/10013/epic.38484 https://hdl.handle.net/10013/epic.38484.d001 unknown Springer https://epic.awi.de/id/eprint/25421/1/Meyer_2011.pdf https://hdl.handle.net/10013/epic.38484.d001 Meyer, B. orcid:0000-0001-6804-9896 (2011) The overwintering of Antarctic krill, Euphausia superba, from an ecophysiological perspective , Polar Biology, 35 (1), pp. 15-37 . doi:10.1007/s00300-011-1120-0 <https://doi.org/10.1007/s00300-011-1120-0> , hdl:10013/epic.38484 EPIC3Polar Biology, Springer, 35(1), pp. 15-37, ISSN: 0722-4060 Article isiRev 2011 ftawi https://doi.org/10.1007/s00300-011-1120-0 2021-12-24T15:35:25Z A major aim of this review is to determine which physiological functions are adopted by adults and larvae to survive the winter season with low food supply and their relative importance. A second aim is to clarify the extent to which seasonal variation in larval and adult krill physiology is mediated by environmental factors with a strong seasonality, such as food supply or day light. Experimental studies on adult krill have demonstrated that speciWc physiological adaptations during autumn and winter, such as reduced metabolic rates and feeding activity, are not caused simply by the scarcity of food, as was previously assumed. These adaptations appear to be inXuenced by the local light regime. The physiological functions that larval krill adopt during winter (reduced metabolism, delayed development, lipid utilisation, and variable growth rates) are, in contrast to the adults, under direct control by the available food supply. During winter, the adults often seem to have little association with sea ice (at least until early spring). The larvae, however, feed within sea ice but mainly on the grazers of the ice algal community rather than on the algae themselves. In this respect, a miss-match in timing of the occurrence of the last phytoplankton blooms in autumn and the start of the sea ice formation, as has been increasingly observed in the west Antarctic Peninsula (WAP) region, will impact larval krill development during winter in terms of food supply and consequently the krill stock in this region. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Polar Biology Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Antarctic Peninsula Polar Biology 35 1 15 37 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
A major aim of this review is to determine which physiological functions are adopted by adults and larvae to survive the winter season with low food supply and their relative importance. A second aim is to clarify the extent to which seasonal variation in larval and adult krill physiology is mediated by environmental factors with a strong seasonality, such as food supply or day light. Experimental studies on adult krill have demonstrated that speciWc physiological adaptations during autumn and winter, such as reduced metabolic rates and feeding activity, are not caused simply by the scarcity of food, as was previously assumed. These adaptations appear to be inXuenced by the local light regime. The physiological functions that larval krill adopt during winter (reduced metabolism, delayed development, lipid utilisation, and variable growth rates) are, in contrast to the adults, under direct control by the available food supply. During winter, the adults often seem to have little association with sea ice (at least until early spring). The larvae, however, feed within sea ice but mainly on the grazers of the ice algal community rather than on the algae themselves. In this respect, a miss-match in timing of the occurrence of the last phytoplankton blooms in autumn and the start of the sea ice formation, as has been increasingly observed in the west Antarctic Peninsula (WAP) region, will impact larval krill development during winter in terms of food supply and consequently the krill stock in this region. |
format |
Article in Journal/Newspaper |
author |
Meyer, Bettina |
spellingShingle |
Meyer, Bettina The overwintering of Antarctic krill, Euphausia superba, from an ecophysiological perspective |
author_facet |
Meyer, Bettina |
author_sort |
Meyer, Bettina |
title |
The overwintering of Antarctic krill, Euphausia superba, from an ecophysiological perspective |
title_short |
The overwintering of Antarctic krill, Euphausia superba, from an ecophysiological perspective |
title_full |
The overwintering of Antarctic krill, Euphausia superba, from an ecophysiological perspective |
title_fullStr |
The overwintering of Antarctic krill, Euphausia superba, from an ecophysiological perspective |
title_full_unstemmed |
The overwintering of Antarctic krill, Euphausia superba, from an ecophysiological perspective |
title_sort |
overwintering of antarctic krill, euphausia superba, from an ecophysiological perspective |
publisher |
Springer |
publishDate |
2011 |
url |
https://epic.awi.de/id/eprint/25421/ https://epic.awi.de/id/eprint/25421/1/Meyer_2011.pdf https://doi.org/10.1007/s00300-011-1120-0 https://hdl.handle.net/10013/epic.38484 https://hdl.handle.net/10013/epic.38484.d001 |
geographic |
Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Polar Biology Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Polar Biology Sea ice |
op_source |
EPIC3Polar Biology, Springer, 35(1), pp. 15-37, ISSN: 0722-4060 |
op_relation |
https://epic.awi.de/id/eprint/25421/1/Meyer_2011.pdf https://hdl.handle.net/10013/epic.38484.d001 Meyer, B. orcid:0000-0001-6804-9896 (2011) The overwintering of Antarctic krill, Euphausia superba, from an ecophysiological perspective , Polar Biology, 35 (1), pp. 15-37 . doi:10.1007/s00300-011-1120-0 <https://doi.org/10.1007/s00300-011-1120-0> , hdl:10013/epic.38484 |
op_doi |
https://doi.org/10.1007/s00300-011-1120-0 |
container_title |
Polar Biology |
container_volume |
35 |
container_issue |
1 |
container_start_page |
15 |
op_container_end_page |
37 |
_version_ |
1766245341093429248 |