Modelling growth and reproduction of Antarctic krill, Euphausia superba , based on temperature, food and resource allocation amongst life history functions
Estimates of productivity of Antarctic krill, Euphausia superba , are dependent on accurate models of growth and reproduction. Incorrect growth models, specifically those giving unrealistically high production, could lead to over-exploitation of the krill population if those models are used in setti...
Published in: | ICES Journal of Marine Science |
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Language: | English |
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Academic Press Ltd Elsevier Science Ltd
2018
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Online Access: | https://doi.org/10.1093/icesjms/fsx190 http://ecite.utas.edu.au/131901 |
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ftunivtasecite:oai:ecite.utas.edu.au:131901 2023-05-15T13:55:18+02:00 Modelling growth and reproduction of Antarctic krill, Euphausia superba , based on temperature, food and resource allocation amongst life history functions Constable, AJ Kawaguchi, S 2018 https://doi.org/10.1093/icesjms/fsx190 http://ecite.utas.edu.au/131901 en eng Academic Press Ltd Elsevier Science Ltd http://dx.doi.org/10.1093/icesjms/fsx190 Constable, AJ and Kawaguchi, S, Modelling growth and reproduction of Antarctic krill, Euphausia superba , based on temperature, food and resource allocation amongst life history functions, ICES Journal of Marine Science, 75, (2) pp. 738-750. ISSN 1054-3139 (2018) [Refereed Article] http://ecite.utas.edu.au/131901 Earth Sciences Oceanography Biological Oceanography Refereed Article PeerReviewed 2018 ftunivtasecite https://doi.org/10.1093/icesjms/fsx190 2019-12-13T22:29:47Z Estimates of productivity of Antarctic krill, Euphausia superba , are dependent on accurate models of growth and reproduction. Incorrect growth models, specifically those giving unrealistically high production, could lead to over-exploitation of the krill population if those models are used in setting catch limits. Here we review available approaches to modelling productivity and note that existing models do not account for the interactions between growth and reproduction and variable environmental conditions. We develop a new energetics moult-cycle (EMC) model which combines energetics and the constraints on growth of the moult-cycle. This model flexibly accounts for regional, inter- and intra-annual variation in temperature, food supply, and day length. The EMC model provides results consistent with the general expectations for krill growth in length and mass, including having thin krill, as well as providing insights into the effects that increasing temperature may have on growth and reproduction. We recommend that this new model be incorporated into assessments of catch limits for Antarctic krill. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba eCite UTAS (University of Tasmania) Antarctic ICES Journal of Marine Science 75 2 738 750 |
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Open Polar |
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eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Biological Oceanography |
spellingShingle |
Earth Sciences Oceanography Biological Oceanography Constable, AJ Kawaguchi, S Modelling growth and reproduction of Antarctic krill, Euphausia superba , based on temperature, food and resource allocation amongst life history functions |
topic_facet |
Earth Sciences Oceanography Biological Oceanography |
description |
Estimates of productivity of Antarctic krill, Euphausia superba , are dependent on accurate models of growth and reproduction. Incorrect growth models, specifically those giving unrealistically high production, could lead to over-exploitation of the krill population if those models are used in setting catch limits. Here we review available approaches to modelling productivity and note that existing models do not account for the interactions between growth and reproduction and variable environmental conditions. We develop a new energetics moult-cycle (EMC) model which combines energetics and the constraints on growth of the moult-cycle. This model flexibly accounts for regional, inter- and intra-annual variation in temperature, food supply, and day length. The EMC model provides results consistent with the general expectations for krill growth in length and mass, including having thin krill, as well as providing insights into the effects that increasing temperature may have on growth and reproduction. We recommend that this new model be incorporated into assessments of catch limits for Antarctic krill. |
format |
Article in Journal/Newspaper |
author |
Constable, AJ Kawaguchi, S |
author_facet |
Constable, AJ Kawaguchi, S |
author_sort |
Constable, AJ |
title |
Modelling growth and reproduction of Antarctic krill, Euphausia superba , based on temperature, food and resource allocation amongst life history functions |
title_short |
Modelling growth and reproduction of Antarctic krill, Euphausia superba , based on temperature, food and resource allocation amongst life history functions |
title_full |
Modelling growth and reproduction of Antarctic krill, Euphausia superba , based on temperature, food and resource allocation amongst life history functions |
title_fullStr |
Modelling growth and reproduction of Antarctic krill, Euphausia superba , based on temperature, food and resource allocation amongst life history functions |
title_full_unstemmed |
Modelling growth and reproduction of Antarctic krill, Euphausia superba , based on temperature, food and resource allocation amongst life history functions |
title_sort |
modelling growth and reproduction of antarctic krill, euphausia superba , based on temperature, food and resource allocation amongst life history functions |
publisher |
Academic Press Ltd Elsevier Science Ltd |
publishDate |
2018 |
url |
https://doi.org/10.1093/icesjms/fsx190 http://ecite.utas.edu.au/131901 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba |
op_relation |
http://dx.doi.org/10.1093/icesjms/fsx190 Constable, AJ and Kawaguchi, S, Modelling growth and reproduction of Antarctic krill, Euphausia superba , based on temperature, food and resource allocation amongst life history functions, ICES Journal of Marine Science, 75, (2) pp. 738-750. ISSN 1054-3139 (2018) [Refereed Article] http://ecite.utas.edu.au/131901 |
op_doi |
https://doi.org/10.1093/icesjms/fsx190 |
container_title |
ICES Journal of Marine Science |
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75 |
container_issue |
2 |
container_start_page |
738 |
op_container_end_page |
750 |
_version_ |
1766261702361350144 |