The molecular basis of diel and seasonal rhythmicity in the copepod Calanus finmarchicus
The copepod Calanus finmarchicus has an ecological key position in the northern Atlantic pelagic food web and its life is characterized by diel and seasonal rhythmicity. Neither diel nor seasonal rhythmicity of C. finmarchicus are understood with regard to their mechanistic regulation. Endogenous cl...
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ftawi:oai:epic.awi.de:46980 2024-06-09T07:45:13+00:00 The molecular basis of diel and seasonal rhythmicity in the copepod Calanus finmarchicus Häfker, N Sören 2018-01-03 application/pdf https://epic.awi.de/id/eprint/46980/ https://epic.awi.de/id/eprint/46980/1/Haefker_2018_PhD.pdf https://oops.uni-oldenburg.de/id/eprint/3578 https://hdl.handle.net/10013/epic.7b55a1b0-16ff-49ec-9e19-73f4061f598c unknown https://epic.awi.de/id/eprint/46980/1/Haefker_2018_PhD.pdf Häfker, N. S. orcid:0000-0002-4883-3656 (2018) The molecular basis of diel and seasonal rhythmicity in the copepod Calanus finmarchicus , PhD thesis, Carl von Ossietzky Universität Oldenburg. hdl:10013/epic.7b55a1b0-16ff-49ec-9e19-73f4061f598c EPIC3178 p. Thesis notRev 2018 ftawi 2024-05-14T23:31:42Z The copepod Calanus finmarchicus has an ecological key position in the northern Atlantic pelagic food web and its life is characterized by diel and seasonal rhythmicity. Neither diel nor seasonal rhythmicity of C. finmarchicus are understood with regard to their mechanistic regulation. Endogenous clock systems are central in controlling rhythms in various terrestrial species, but have hardly been investigated in marine organisms. This thesis shows that C. finmarchicus possesses an endogenous circadian clock, that regulated 24h rhythms of gene expression, metabolic activity and vertical migration behavior. The thesis further suggests that clock-based day length measurement and an endogenous annual clock is involved in the regulation of seasonal rhythmicity. The findings on C. finmarchicus’ timing systems are further related to the extreme light conditions in polar environments, discussing potential effects of climate chance on the copepods rhythmicity and biology. Thesis Calanus finmarchicus Copepods Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
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description |
The copepod Calanus finmarchicus has an ecological key position in the northern Atlantic pelagic food web and its life is characterized by diel and seasonal rhythmicity. Neither diel nor seasonal rhythmicity of C. finmarchicus are understood with regard to their mechanistic regulation. Endogenous clock systems are central in controlling rhythms in various terrestrial species, but have hardly been investigated in marine organisms. This thesis shows that C. finmarchicus possesses an endogenous circadian clock, that regulated 24h rhythms of gene expression, metabolic activity and vertical migration behavior. The thesis further suggests that clock-based day length measurement and an endogenous annual clock is involved in the regulation of seasonal rhythmicity. The findings on C. finmarchicus’ timing systems are further related to the extreme light conditions in polar environments, discussing potential effects of climate chance on the copepods rhythmicity and biology. |
format |
Thesis |
author |
Häfker, N Sören |
spellingShingle |
Häfker, N Sören The molecular basis of diel and seasonal rhythmicity in the copepod Calanus finmarchicus |
author_facet |
Häfker, N Sören |
author_sort |
Häfker, N Sören |
title |
The molecular basis of diel and seasonal rhythmicity in the copepod Calanus finmarchicus |
title_short |
The molecular basis of diel and seasonal rhythmicity in the copepod Calanus finmarchicus |
title_full |
The molecular basis of diel and seasonal rhythmicity in the copepod Calanus finmarchicus |
title_fullStr |
The molecular basis of diel and seasonal rhythmicity in the copepod Calanus finmarchicus |
title_full_unstemmed |
The molecular basis of diel and seasonal rhythmicity in the copepod Calanus finmarchicus |
title_sort |
molecular basis of diel and seasonal rhythmicity in the copepod calanus finmarchicus |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/46980/ https://epic.awi.de/id/eprint/46980/1/Haefker_2018_PhD.pdf https://oops.uni-oldenburg.de/id/eprint/3578 https://hdl.handle.net/10013/epic.7b55a1b0-16ff-49ec-9e19-73f4061f598c |
genre |
Calanus finmarchicus Copepods |
genre_facet |
Calanus finmarchicus Copepods |
op_source |
EPIC3178 p. |
op_relation |
https://epic.awi.de/id/eprint/46980/1/Haefker_2018_PhD.pdf Häfker, N. S. orcid:0000-0002-4883-3656 (2018) The molecular basis of diel and seasonal rhythmicity in the copepod Calanus finmarchicus , PhD thesis, Carl von Ossietzky Universität Oldenburg. hdl:10013/epic.7b55a1b0-16ff-49ec-9e19-73f4061f598c |
_version_ |
1801374263392862208 |