Plasticity in dormancy behaviour of Calanoides acutus in Antarctic coastal waters
Copepods that enter dormancy, such as Calanoides acutus, are key primary consumers in Southern Ocean food webs where they convert a portion of the seasonal phytoplankton biomass into a longer-term energetic and physiological resource as wax ester (WE) reserves. We studied the seasonal abundance and...
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Oxford University Press
2020
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Online Access: | http://hdl.handle.net/1893/31952 https://doi.org/10.1093/icesjms/fsaa042 http://dspace.stir.ac.uk/bitstream/1893/31952/1/fsaa042.pdf |
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ftunivstirling:oai:dspace.stir.ac.uk:1893/31952 2023-05-15T14:05:21+02:00 Plasticity in dormancy behaviour of Calanoides acutus in Antarctic coastal waters Biggs, Tristan E G Brussaard, Corina P D Evans, Claire Venables, Hugh J Pond, David W Netherlands Organisation for Scientific Research Utrecht University National Oceanography Centre British Antarctic Survey Institute of Aquaculture 2020-09 application/pdf http://hdl.handle.net/1893/31952 https://doi.org/10.1093/icesjms/fsaa042 http://dspace.stir.ac.uk/bitstream/1893/31952/1/fsaa042.pdf en eng Oxford University Press Biggs TEG, Brussaard CPD, Evans C, Venables HJ & Pond DW (2020) Plasticity in dormancy behaviour of Calanoides acutus in Antarctic coastal waters. Ices Journal of Marine Science, 77 (5), pp. 1738-1751. https://doi.org/10.1093/icesjms/fsaa042 http://hdl.handle.net/1893/31952 doi:10.1093/icesjms/fsaa042 WOS:000582719500014 2-s2.0-85094911114 1680907 http://dspace.stir.ac.uk/bitstream/1893/31952/1/fsaa042.pdf Copyright International Council for the Exploration of the Sea 2020. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/ licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0/ CC-BY copepod dormancy life cycle lipids phytoplankton wax ester unsaturation Journal Article VoR - Version of Record 2020 ftunivstirling https://doi.org/10.1093/icesjms/fsaa042 2022-06-13T18:42:19Z Copepods that enter dormancy, such as Calanoides acutus, are key primary consumers in Southern Ocean food webs where they convert a portion of the seasonal phytoplankton biomass into a longer-term energetic and physiological resource as wax ester (WE) reserves. We studied the seasonal abundance and lipid profiles of pre-adult and adult C. acutus in relation to phytoplankton dynamics on the Western Antarctic Peninsula. Initiation of dormancy occurred when WE unsaturation was relatively high, and chlorophyll a (Chl a) concentrations, predominantly attributable to diatoms, were reducing. Declines in WE unsaturation during the winter may act as a dormancy timing mechanism with increased Chl a concentrations likely to promote sedimentation that results in a teleconnection between the surface and deep water inducing ascent. A late summer diatom bloom was linked to early dormancy termination of females and a second spawning event. The frequency and duration of high biomass phytoplankton blooms may have consequences for the lifespan of the iteroparous C. acutus females (either 1 or 2 years) if limited by a total of two main spawning events. Late summer recruits, generated by a second spawning event, likely benefitted from lower predation and high phytoplankton food availability. The flexibility of copepods to modulate their life-cycle strategy in response to bottom-up and top-down conditions enables individuals to optimize their probability of reproductive success in the very variable environment prevalent in the Southern Ocean. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Southern Ocean Copepods University of Stirling: Stirling Digital Research Repository Antarctic Antarctic Peninsula Southern Ocean ICES Journal of Marine Science 77 5 1738 1751 |
institution |
Open Polar |
collection |
University of Stirling: Stirling Digital Research Repository |
op_collection_id |
ftunivstirling |
language |
English |
topic |
copepod dormancy life cycle lipids phytoplankton wax ester unsaturation |
spellingShingle |
copepod dormancy life cycle lipids phytoplankton wax ester unsaturation Biggs, Tristan E G Brussaard, Corina P D Evans, Claire Venables, Hugh J Pond, David W Plasticity in dormancy behaviour of Calanoides acutus in Antarctic coastal waters |
topic_facet |
copepod dormancy life cycle lipids phytoplankton wax ester unsaturation |
description |
Copepods that enter dormancy, such as Calanoides acutus, are key primary consumers in Southern Ocean food webs where they convert a portion of the seasonal phytoplankton biomass into a longer-term energetic and physiological resource as wax ester (WE) reserves. We studied the seasonal abundance and lipid profiles of pre-adult and adult C. acutus in relation to phytoplankton dynamics on the Western Antarctic Peninsula. Initiation of dormancy occurred when WE unsaturation was relatively high, and chlorophyll a (Chl a) concentrations, predominantly attributable to diatoms, were reducing. Declines in WE unsaturation during the winter may act as a dormancy timing mechanism with increased Chl a concentrations likely to promote sedimentation that results in a teleconnection between the surface and deep water inducing ascent. A late summer diatom bloom was linked to early dormancy termination of females and a second spawning event. The frequency and duration of high biomass phytoplankton blooms may have consequences for the lifespan of the iteroparous C. acutus females (either 1 or 2 years) if limited by a total of two main spawning events. Late summer recruits, generated by a second spawning event, likely benefitted from lower predation and high phytoplankton food availability. The flexibility of copepods to modulate their life-cycle strategy in response to bottom-up and top-down conditions enables individuals to optimize their probability of reproductive success in the very variable environment prevalent in the Southern Ocean. |
author2 |
Netherlands Organisation for Scientific Research Utrecht University National Oceanography Centre British Antarctic Survey Institute of Aquaculture |
format |
Article in Journal/Newspaper |
author |
Biggs, Tristan E G Brussaard, Corina P D Evans, Claire Venables, Hugh J Pond, David W |
author_facet |
Biggs, Tristan E G Brussaard, Corina P D Evans, Claire Venables, Hugh J Pond, David W |
author_sort |
Biggs, Tristan E G |
title |
Plasticity in dormancy behaviour of Calanoides acutus in Antarctic coastal waters |
title_short |
Plasticity in dormancy behaviour of Calanoides acutus in Antarctic coastal waters |
title_full |
Plasticity in dormancy behaviour of Calanoides acutus in Antarctic coastal waters |
title_fullStr |
Plasticity in dormancy behaviour of Calanoides acutus in Antarctic coastal waters |
title_full_unstemmed |
Plasticity in dormancy behaviour of Calanoides acutus in Antarctic coastal waters |
title_sort |
plasticity in dormancy behaviour of calanoides acutus in antarctic coastal waters |
publisher |
Oxford University Press |
publishDate |
2020 |
url |
http://hdl.handle.net/1893/31952 https://doi.org/10.1093/icesjms/fsaa042 http://dspace.stir.ac.uk/bitstream/1893/31952/1/fsaa042.pdf |
geographic |
Antarctic Antarctic Peninsula Southern Ocean |
geographic_facet |
Antarctic Antarctic Peninsula Southern Ocean |
genre |
Antarc* Antarctic Antarctic Peninsula Southern Ocean Copepods |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Southern Ocean Copepods |
op_relation |
Biggs TEG, Brussaard CPD, Evans C, Venables HJ & Pond DW (2020) Plasticity in dormancy behaviour of Calanoides acutus in Antarctic coastal waters. Ices Journal of Marine Science, 77 (5), pp. 1738-1751. https://doi.org/10.1093/icesjms/fsaa042 http://hdl.handle.net/1893/31952 doi:10.1093/icesjms/fsaa042 WOS:000582719500014 2-s2.0-85094911114 1680907 http://dspace.stir.ac.uk/bitstream/1893/31952/1/fsaa042.pdf |
op_rights |
Copyright International Council for the Exploration of the Sea 2020. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/ licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1093/icesjms/fsaa042 |
container_title |
ICES Journal of Marine Science |
container_volume |
77 |
container_issue |
5 |
container_start_page |
1738 |
op_container_end_page |
1751 |
_version_ |
1766277172666826752 |