Light regime affects the seasonal cycle of Antarctic krill ( Euphausia superba ): impacts on growth, feeding, lipid metabolism, and maturity
Light regime is an important zeitgeber for Antarctic krill (Euphausia superba Dana, 1850), which seems to entrain an endogenous timing system that synchronizes its life cycle to the extreme light conditions in the Southern Ocean. To understand the flexibility of Antarctic krill’s seasonal cycle, we...
Published in: | Canadian Journal of Zoology |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
2018
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/cjz-2017-0353 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2017-0353 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2017-0353 |
id |
crcansciencepubl:10.1139/cjz-2017-0353 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/cjz-2017-0353 2023-12-17T10:21:32+01:00 Light regime affects the seasonal cycle of Antarctic krill ( Euphausia superba ): impacts on growth, feeding, lipid metabolism, and maturity Höring, Flavia Teschke, Mathias Suberg, Lavinia Kawaguchi, So Meyer, Bettina 2018 http://dx.doi.org/10.1139/cjz-2017-0353 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2017-0353 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2017-0353 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 96, issue 11, page 1203-1213 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2018 crcansciencepubl https://doi.org/10.1139/cjz-2017-0353 2023-11-19T13:39:23Z Light regime is an important zeitgeber for Antarctic krill (Euphausia superba Dana, 1850), which seems to entrain an endogenous timing system that synchronizes its life cycle to the extreme light conditions in the Southern Ocean. To understand the flexibility of Antarctic krill’s seasonal cycle, we investigated its physiological and behavioural responses to different light regimes and if an endogenous timing system was involved in the regulation of these seasonal processes. We analysed growth, feeding, lipid content, and maturity in a 2-year laboratory experiment simulating the latitudinal light regimes at 52°S and 66°S and constant darkness under constant food level. Our results showed that light regime affected seasonal cycles of growth, feeding, lipid metabolism, and maturity in Antarctic krill. Seasonal patterns of growth, feeding, and maturity persisted under constant darkness, indicating the presence of an endogenous timing system. The maturity cycle showed differences in critical photoperiods according to the simulated latitudinal light regime. This suggests a flexible endogenous timing mechanism in Antarctic krill, which may determine its response to future environmental changes. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean Canadian Science Publishing (via Crossref) Antarctic Southern Ocean Canadian Journal of Zoology 96 11 1203 1213 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Höring, Flavia Teschke, Mathias Suberg, Lavinia Kawaguchi, So Meyer, Bettina Light regime affects the seasonal cycle of Antarctic krill ( Euphausia superba ): impacts on growth, feeding, lipid metabolism, and maturity |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Light regime is an important zeitgeber for Antarctic krill (Euphausia superba Dana, 1850), which seems to entrain an endogenous timing system that synchronizes its life cycle to the extreme light conditions in the Southern Ocean. To understand the flexibility of Antarctic krill’s seasonal cycle, we investigated its physiological and behavioural responses to different light regimes and if an endogenous timing system was involved in the regulation of these seasonal processes. We analysed growth, feeding, lipid content, and maturity in a 2-year laboratory experiment simulating the latitudinal light regimes at 52°S and 66°S and constant darkness under constant food level. Our results showed that light regime affected seasonal cycles of growth, feeding, lipid metabolism, and maturity in Antarctic krill. Seasonal patterns of growth, feeding, and maturity persisted under constant darkness, indicating the presence of an endogenous timing system. The maturity cycle showed differences in critical photoperiods according to the simulated latitudinal light regime. This suggests a flexible endogenous timing mechanism in Antarctic krill, which may determine its response to future environmental changes. |
format |
Article in Journal/Newspaper |
author |
Höring, Flavia Teschke, Mathias Suberg, Lavinia Kawaguchi, So Meyer, Bettina |
author_facet |
Höring, Flavia Teschke, Mathias Suberg, Lavinia Kawaguchi, So Meyer, Bettina |
author_sort |
Höring, Flavia |
title |
Light regime affects the seasonal cycle of Antarctic krill ( Euphausia superba ): impacts on growth, feeding, lipid metabolism, and maturity |
title_short |
Light regime affects the seasonal cycle of Antarctic krill ( Euphausia superba ): impacts on growth, feeding, lipid metabolism, and maturity |
title_full |
Light regime affects the seasonal cycle of Antarctic krill ( Euphausia superba ): impacts on growth, feeding, lipid metabolism, and maturity |
title_fullStr |
Light regime affects the seasonal cycle of Antarctic krill ( Euphausia superba ): impacts on growth, feeding, lipid metabolism, and maturity |
title_full_unstemmed |
Light regime affects the seasonal cycle of Antarctic krill ( Euphausia superba ): impacts on growth, feeding, lipid metabolism, and maturity |
title_sort |
light regime affects the seasonal cycle of antarctic krill ( euphausia superba ): impacts on growth, feeding, lipid metabolism, and maturity |
publisher |
Canadian Science Publishing |
publishDate |
2018 |
url |
http://dx.doi.org/10.1139/cjz-2017-0353 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2017-0353 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2017-0353 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean |
op_source |
Canadian Journal of Zoology volume 96, issue 11, page 1203-1213 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjz-2017-0353 |
container_title |
Canadian Journal of Zoology |
container_volume |
96 |
container_issue |
11 |
container_start_page |
1203 |
op_container_end_page |
1213 |
_version_ |
1785535731970605056 |