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 settin...
Published in: | ICES Journal of Marine Science |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Academic Press Ltd Elsevier Science Ltd
2018
|
Subjects: | |
Online Access: | https://eprints.utas.edu.au/30063/ |
id |
ftunivtasmania:oai:eprints.utas.edu.au:30063 |
---|---|
record_format |
openpolar |
spelling |
ftunivtasmania:oai:eprints.utas.edu.au:30063 2023-05-15T13:31:53+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://eprints.utas.edu.au/30063/ unknown Academic Press Ltd Elsevier Science Ltd Constable, AJ and Kawaguchi, S 2018 , '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, vol. 75, no. 2 , pp. 738-750 , doi:10.1093/icesjms/fsx190 <http://dx.doi.org/10.1093/icesjms/fsx190>. Antarctica CCAMLR growth krill life history modelling Article PeerReviewed 2018 ftunivtasmania https://doi.org/10.1093/icesjms/fsx190 2021-09-20T22:17:32Z 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 Antarctica Euphausia superba University of Tasmania: UTas ePrints Antarctic ICES Journal of Marine Science 75 2 738 750 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
unknown |
topic |
Antarctica CCAMLR growth krill life history modelling |
spellingShingle |
Antarctica CCAMLR growth krill life history modelling 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 |
Antarctica CCAMLR growth krill life history modelling |
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://eprints.utas.edu.au/30063/ |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Antarctica Euphausia superba |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctica Euphausia superba |
op_relation |
Constable, AJ and Kawaguchi, S 2018 , '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, vol. 75, no. 2 , pp. 738-750 , doi:10.1093/icesjms/fsx190 <http://dx.doi.org/10.1093/icesjms/fsx190>. |
op_doi |
https://doi.org/10.1093/icesjms/fsx190 |
container_title |
ICES Journal of Marine Science |
container_volume |
75 |
container_issue |
2 |
container_start_page |
738 |
op_container_end_page |
750 |
_version_ |
1766022047092178944 |