Browsing by Subject "Merluccius paradoxus"
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- ItemOpen AccessAge-reading error matrices for Merluccius paradoxus and M. capensis(2009) Rademeyer, Rebecca AThe revised methodology for hake assessments currently under development requires inputs on the relative biases amongst different readers of hake ages from otoliths, and the extent of variability of these readings. This document details the methodology applied to determine these ageing error matrices.
- ItemRestrictedDetailed methodology and results for the final reference set of the South African Merluccius paradoxus and M. capensis resources for use in OMP testing(2006) Rademeyer, Rebecca A; Butterworth, Doug SThis document gives detailed methodology, data and results for the final Reference Set for the joint assessment of the South African M. paradoxus and M. capensis resources that will be used in OMP testing.
- ItemOpen AccessMerluccius paradoxus and M. capensis length frequency distributions from Nansen surveys(2006) Rademeyer, Rebecca A; Butterworth, Doug SA strong argument for the single M. paradoxus stock hypothesis (Burmeister, 2005) is that the major (perhaps effectively the only) spawning ground for the species is on the Agulhas Bank slope. Linked to this, one might then expect greater proportions of smaller M. paradoxus closer to this region, and Burmeister (2005, Fig. 2) shows plots that seemingly corroborate this, reflecting mean lengths of M. paradoxus collected on research survey that generally increase with movement from the Agulhas Bank north-westwards to the Kunene river (Namibian-Angolan border).
- ItemRestrictedProposed update of the proposed revised reference set for the joint assessment of the South African Merluccius paradoxus and M. capensis resources for use in OMP testing(2006) Rademeyer, Rebecca A; Butterworth, Doug SThe plus-group for M. paradoxus and M. capensis in the joint assessment of these resources has been extended to age 15 (from 5+ for M. paradoxus and 7+ for M. capensis). Some results are presented for a subset of the proposed set of scenarios to be included in a revised Reference Set, that would then be used in subsequent OMP testing.