An update on the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity
Two Operating Models (OMs) reflecting an “Optimistic” and a “Pessimistic” current status for the toothfish resource in the Prince Edward Islands region that were developed last year are updated given further data. These models are for use for initial trials of candidate Management Procedures (MPs) w...
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Marine Resource Assessment and Management Group
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ftunivcapetownir:oai:open.uct.ac.za:11427/19018 2024-09-15T18:31:33+00:00 An update on the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity Brandão, Anabela Butterworth, Doug S 2006 application/pdf http://hdl.handle.net/11427/19018 eng eng Marine Resource Assessment and Management Group Faculty of Science University of Cape Town http://hdl.handle.net/11427/19018 Commission for the Conservation of Antarctic Marine Living Resources https://www.ccamlr.org/en Management procedure Toothfish Prince Edward Islands vicinity Working Paper 2006 ftunivcapetownir 2024-06-25T03:36:35Z Two Operating Models (OMs) reflecting an “Optimistic” and a “Pessimistic” current status for the toothfish resource in the Prince Edward Islands region that were developed last year are updated given further data. These models are for use for initial trials of candidate Management Procedures (MPs) which could provide future TAC recommendations for this resource. Deterministic projections under a constant future catch suggest that the two scenarios will only be qualitatively distinguished in the shortterm by an increase in the mean length of longline-caught toothfish over the next five years for the “Pessimistic”, but not the “Optimistic” case. Accordingly the performance of a simple MP control rule based upon recent trends in both CPUE and this mean length is investigated. This MP is able to secure a faster increase in the TAC for the “Optimistic” case, and some recovery in abundance for the “Pessimistic” scenario, but neither is as appreciable as one might wish. Suggestions for future work are made. Report Prince Edward Islands University of Cape Town: OpenUCT |
institution |
Open Polar |
collection |
University of Cape Town: OpenUCT |
op_collection_id |
ftunivcapetownir |
language |
English |
topic |
Management procedure Toothfish Prince Edward Islands vicinity |
spellingShingle |
Management procedure Toothfish Prince Edward Islands vicinity Brandão, Anabela Butterworth, Doug S An update on the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity |
topic_facet |
Management procedure Toothfish Prince Edward Islands vicinity |
description |
Two Operating Models (OMs) reflecting an “Optimistic” and a “Pessimistic” current status for the toothfish resource in the Prince Edward Islands region that were developed last year are updated given further data. These models are for use for initial trials of candidate Management Procedures (MPs) which could provide future TAC recommendations for this resource. Deterministic projections under a constant future catch suggest that the two scenarios will only be qualitatively distinguished in the shortterm by an increase in the mean length of longline-caught toothfish over the next five years for the “Pessimistic”, but not the “Optimistic” case. Accordingly the performance of a simple MP control rule based upon recent trends in both CPUE and this mean length is investigated. This MP is able to secure a faster increase in the TAC for the “Optimistic” case, and some recovery in abundance for the “Pessimistic” scenario, but neither is as appreciable as one might wish. Suggestions for future work are made. |
format |
Report |
author |
Brandão, Anabela Butterworth, Doug S |
author_facet |
Brandão, Anabela Butterworth, Doug S |
author_sort |
Brandão, Anabela |
title |
An update on the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity |
title_short |
An update on the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity |
title_full |
An update on the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity |
title_fullStr |
An update on the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity |
title_full_unstemmed |
An update on the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity |
title_sort |
update on the development of a management procedure for the toothfish (dissostichus eleginoides) resource in the prince edward islands vicinity |
publisher |
Marine Resource Assessment and Management Group |
publishDate |
2006 |
url |
http://hdl.handle.net/11427/19018 |
genre |
Prince Edward Islands |
genre_facet |
Prince Edward Islands |
op_source |
Commission for the Conservation of Antarctic Marine Living Resources https://www.ccamlr.org/en |
op_relation |
http://hdl.handle.net/11427/19018 |
_version_ |
1810473265166024704 |