A proposed management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

 

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dc.contributor.author Brandão, Anabela
dc.contributor.author Butterworth, Doug S
dc.date.accessioned 2016-04-04T12:50:20Z
dc.date.available 2016-04-04T12:50:20Z
dc.date.issued 2008
dc.identifier.citation Brandão, A., & Butterworth, D. S. (2008). A proposed management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity. MARAM: University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/18538
dc.description.abstract Four Operating Models (OMs) reflecting an “Optimistic”, “Intermediate”, “Less Pessimistic” and a “Pessimistic” current status for the toothfish resource in the Prince Edward Islands region are developed which take account of the different selectivities of past longline and pot fisheries. These models are used for trials of a candidate Management Procedure (MP) which could provide future TAC recommendations for this resource. The MP uses two data sources: the recent trend in longline CPUE and the mean length of the catches made. A specific MP, with its associated control parameter values, is proposed for implementation based upon the results of the trials. Given the importance of an adequate catch rate for the economic viability of the fishery, the choice of control parameter values focused primarily on a reasonable probability of securing a catch rate increase, whatever the current resource status. MP performance is reasonably robust across a range of sensitivity tests, though does deteriorate in conservation terms if steepness h is low. These tests also indicate that monitoring of future catch-at-length information would be necessary to guard against a change in selectivity towards greater catches of older fish. en_ZA
dc.language eng en_ZA
dc.title A proposed management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity en_ZA
dc.type Working Paper en_ZA
dc.date.updated 2016-04-04T12:48:51Z
uct.type.publication Research en_ZA
uct.type.resource Research paper en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Marine Resource Assessment and Management Group en_ZA
uct.type.filetype Text
uct.type.filetype Image


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