2006 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity
The ASPM assessment of the Prince Edward Islands toothfish resource by Brandão and Butterworth (2005) that permitted annual fluctuations about a deterministic stockrecruitment relationship is updated to take account of further catch, GLM standardised CPUE and catch-at-length information that has bec...
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University of Cape Town
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ftunivcapetownir:oai:localhost:11427/19017 2023-05-15T18:03:26+02:00 2006 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity Brandão, Anabela Butterworth, Doug S 2006 application/pdf http://hdl.handle.net/11427/19017 https://open.uct.ac.za/bitstream/11427/19017/1/Brand%c3%a3o_2006_assessment_2006.pdf eng eng University of Cape Town Faculty of Science Marine Resource Assessment and Management Group http://hdl.handle.net/11427/19017 https://open.uct.ac.za/bitstream/11427/19017/1/Brand%c3%a3o_2006_assessment_2006.pdf Toothfish Assessment Prince Edward Islands vicinity Working Paper 2006 ftunivcapetownir 2022-09-13T05:47:44Z The ASPM assessment of the Prince Edward Islands toothfish resource by Brandão and Butterworth (2005) that permitted annual fluctuations about a deterministic stockrecruitment relationship is updated to take account of further catch, GLM standardised CPUE and catch-at-length information that has become available for the years 2005 and 2006. The assessment allows for a second fleet to accommodate data from a pot fishery that operated in 2004 and 2005. Updated biological parameter values for Subarea 48.3 are incorporated and lead to less optimistic results. The resource is estimated to be at about 40% of its average pre-exploitation level in terms of spawning biomass. It is suggested that it would be prudent to restrict annual legal catches to 500 tonnes or less, unless a large proportion of the catch is to be taken by pots (which avoid the cetacean predation associated with longlining). Specific issues raised at WGFSA-SAM 2006 about this assessment are addressed. Report Prince Edward Islands University of Cape Town: OpenUCT Butterworth ENVELOPE(66.733,66.733,-70.700,-70.700) |
institution |
Open Polar |
collection |
University of Cape Town: OpenUCT |
op_collection_id |
ftunivcapetownir |
language |
English |
topic |
Toothfish Assessment Prince Edward Islands vicinity |
spellingShingle |
Toothfish Assessment Prince Edward Islands vicinity Brandão, Anabela Butterworth, Doug S 2006 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity |
topic_facet |
Toothfish Assessment Prince Edward Islands vicinity |
description |
The ASPM assessment of the Prince Edward Islands toothfish resource by Brandão and Butterworth (2005) that permitted annual fluctuations about a deterministic stockrecruitment relationship is updated to take account of further catch, GLM standardised CPUE and catch-at-length information that has become available for the years 2005 and 2006. The assessment allows for a second fleet to accommodate data from a pot fishery that operated in 2004 and 2005. Updated biological parameter values for Subarea 48.3 are incorporated and lead to less optimistic results. The resource is estimated to be at about 40% of its average pre-exploitation level in terms of spawning biomass. It is suggested that it would be prudent to restrict annual legal catches to 500 tonnes or less, unless a large proportion of the catch is to be taken by pots (which avoid the cetacean predation associated with longlining). Specific issues raised at WGFSA-SAM 2006 about this assessment are addressed. |
format |
Report |
author |
Brandão, Anabela Butterworth, Doug S |
author_facet |
Brandão, Anabela Butterworth, Doug S |
author_sort |
Brandão, Anabela |
title |
2006 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity |
title_short |
2006 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity |
title_full |
2006 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity |
title_fullStr |
2006 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity |
title_full_unstemmed |
2006 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity |
title_sort |
2006 assessment of the toothfish (dissostichus eleginoides) resource in the prince edward islands vicinity |
publisher |
University of Cape Town |
publishDate |
2006 |
url |
http://hdl.handle.net/11427/19017 https://open.uct.ac.za/bitstream/11427/19017/1/Brand%c3%a3o_2006_assessment_2006.pdf |
long_lat |
ENVELOPE(66.733,66.733,-70.700,-70.700) |
geographic |
Butterworth |
geographic_facet |
Butterworth |
genre |
Prince Edward Islands |
genre_facet |
Prince Edward Islands |
op_relation |
http://hdl.handle.net/11427/19017 https://open.uct.ac.za/bitstream/11427/19017/1/Brand%c3%a3o_2006_assessment_2006.pdf |
_version_ |
1766174280154873856 |