Influence of seasonal light conditions on the physiology of Antarctic krill Euphausia superba: Implications for over-winter biology and maturity development
Antarctic krill (Euphausia superba) is the most abundant of the world's euphausiids and plays a central role in the Southern Ocean pelagic ecosystem. The main focus of this thesis was to evaluate the influence of seasonal light conditions on the physiology of krill, particularly with regard to...
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Universität Bremen
2007
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Online Access: | https://media.suub.uni-bremen.de/handle/elib/2390 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000107504 |
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/2390 2023-05-15T13:42:31+02:00 Influence of seasonal light conditions on the physiology of Antarctic krill Euphausia superba: Implications for over-winter biology and maturity development Einfluss saisonaler Lichtbedingungen auf die Physiologie des antarktischen Krills Euphausia superba: Auswirkungen auf Überwinterungsbiologie und Geschlechtsreifeentwicklung Teschke, Mathias Bathmann, Ulrich Meyer, Bettina Hagen, Wilhelm 2007-07-12 application/pdf https://media.suub.uni-bremen.de/handle/elib/2390 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000107504 eng eng Universität Bremen FB2 Biologie/Chemie https://media.suub.uni-bremen.de/handle/elib/2390 urn:nbn:de:gbv:46-diss000107504 info:eu-repo/semantics/openAccess Antarctic krill Southern Ocean light regime Feeding activity Metabolism Maturity Melatonin 590 590 Animals (Zoology) ddc:590 Dissertation doctoralThesis 2007 ftsubbremen 2022-11-09T07:09:48Z Antarctic krill (Euphausia superba) is the most abundant of the world's euphausiids and plays a central role in the Southern Ocean pelagic ecosystem. The main focus of this thesis was to evaluate the influence of seasonal light conditions on the physiology of krill, particularly with regard to the over-winter biology and maturity development of krill. The results indicate that, irrespective of food supply, the level of feeding and metabolic activity in krill correlates with the degree of prevailing light conditions. Furthermore, the results indicate that the succession of female and male krill maturity stages is accelerated by light conditions of prolonged photoperiod and enhanced light intensity. Together, the results emphasizes the role of the Southern Ocean light regime as an essential cue governing the seasonal cycle of krill physiology. It is further shown that the photoperiodic response system in krill is not based on melatonin as a transducer of photoperiodic information, although melatonin is assumed to be principally involved in the transduction of photoperiodic information in living organisms. Doctoral or Postdoctoral Thesis Antarc* Antarctic Antarctic Krill Antarktis* Euphausia superba Southern Ocean Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Antarctic Southern Ocean |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
Antarctic krill Southern Ocean light regime Feeding activity Metabolism Maturity Melatonin 590 590 Animals (Zoology) ddc:590 |
spellingShingle |
Antarctic krill Southern Ocean light regime Feeding activity Metabolism Maturity Melatonin 590 590 Animals (Zoology) ddc:590 Teschke, Mathias Influence of seasonal light conditions on the physiology of Antarctic krill Euphausia superba: Implications for over-winter biology and maturity development |
topic_facet |
Antarctic krill Southern Ocean light regime Feeding activity Metabolism Maturity Melatonin 590 590 Animals (Zoology) ddc:590 |
description |
Antarctic krill (Euphausia superba) is the most abundant of the world's euphausiids and plays a central role in the Southern Ocean pelagic ecosystem. The main focus of this thesis was to evaluate the influence of seasonal light conditions on the physiology of krill, particularly with regard to the over-winter biology and maturity development of krill. The results indicate that, irrespective of food supply, the level of feeding and metabolic activity in krill correlates with the degree of prevailing light conditions. Furthermore, the results indicate that the succession of female and male krill maturity stages is accelerated by light conditions of prolonged photoperiod and enhanced light intensity. Together, the results emphasizes the role of the Southern Ocean light regime as an essential cue governing the seasonal cycle of krill physiology. It is further shown that the photoperiodic response system in krill is not based on melatonin as a transducer of photoperiodic information, although melatonin is assumed to be principally involved in the transduction of photoperiodic information in living organisms. |
author2 |
Bathmann, Ulrich Meyer, Bettina Hagen, Wilhelm |
format |
Doctoral or Postdoctoral Thesis |
author |
Teschke, Mathias |
author_facet |
Teschke, Mathias |
author_sort |
Teschke, Mathias |
title |
Influence of seasonal light conditions on the physiology of Antarctic krill Euphausia superba: Implications for over-winter biology and maturity development |
title_short |
Influence of seasonal light conditions on the physiology of Antarctic krill Euphausia superba: Implications for over-winter biology and maturity development |
title_full |
Influence of seasonal light conditions on the physiology of Antarctic krill Euphausia superba: Implications for over-winter biology and maturity development |
title_fullStr |
Influence of seasonal light conditions on the physiology of Antarctic krill Euphausia superba: Implications for over-winter biology and maturity development |
title_full_unstemmed |
Influence of seasonal light conditions on the physiology of Antarctic krill Euphausia superba: Implications for over-winter biology and maturity development |
title_sort |
influence of seasonal light conditions on the physiology of antarctic krill euphausia superba: implications for over-winter biology and maturity development |
publisher |
Universität Bremen |
publishDate |
2007 |
url |
https://media.suub.uni-bremen.de/handle/elib/2390 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000107504 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Antarktis* Euphausia superba Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarktis* Euphausia superba Southern Ocean |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/2390 urn:nbn:de:gbv:46-diss000107504 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766168710376062976 |