Results 21 to 30 of about 612 (161)

South African hake resource – collation of some biological information [PDF]

open access: yes, 2023
A summary of some biological information on the South African hake resource is provided. This includes for both species M. paradoxus and M. capensis: length and age structure; growth curves; age-specific survival and fecundity; generation length; time ...
Deon Durholtz (11440692)   +2 more
core   +1 more source

An updated Reference Case for the South African hake resource [PDF]

open access: yes, 2022
The development of and results for an updated Reference Case for the South African hake resource are presented here. This update takes account of the recommendations made by the December 2013 International Fisheries Stock Assessment Review Workshop ...
Rebecca A Rademeyer (10107625)
core   +1 more source

Population Genomics and the Environmental Drivers of Population Structure in a Cosmopolitan Marine Predator, Tursiops truncatus. [PDF]

open access: yesMol Ecol
ABSTRACT The marine environment comprises vast regions without physical barriers to movement, making the understanding of population isolation and the evolution of diversity challenging. This is especially the case for highly mobile marine species.
Moore DM   +11 more
europepmc   +2 more sources

Proposed Reference Set for the South African hake resource

open access: yes, 2022
This document identifies three aspects that have been found to account for most of the uncertainty regarding the key considerations of resource status and productivity: a) pre-1978 species split of the offshore trawl catches; b) natural mortality-at-age specifications; and c) the stock-recruitment relationship.
openaire   +2 more sources

Further projections under the Reference Set for the South African hake resource

open access: yes, 2021
OMP-2014 projections for the Reference Set are considered for variants which impose a further 5 000 or 10 000 ton TAC reduction for 2018 for comparison to performance under the unadjusted OMP. These reduce the number of further years for which a TAC decrease can be expected, but M. paradoxus reaches BMSY only one year earlier.
Rademeyer, Rebecca A, Butterworth, Doug
openaire   +2 more sources

Redistribution and sustainability : competing imperatives in the South African hake fishery [PDF]

open access: yes, 2011
This paper focuses on the hake fishery and investigates to what extent the fishery has been transformed. It then discusses the institutional structure and incentive schemes in the fishery and evaluates the economic, social, and environmental impacts of ...
Heistein, Pierre
core  

Retrospective analysis for the South African hake resource Reference Case Assessment [PDF]

open access: yes, 2021
Figures 1 and 2 plot spawning biomass and recruitment results respectively for a retrospective analysis of the South African hake resource for the 2017 Reference Case (Rademeyer and Butterworth, 2017).Over recent years the assessment has tended to ...
Doug Butterworth (10005953)   +1 more
core   +1 more source

Bony fish genomes: Status and gaps

open access: yesJournal of Fish Biology, EarlyView.
Abstract Bony fish constitute an exceptionally species‐rich group of aquatic vertebrates, comprising more than 95% of all living fish. The adaptive processes on the diversity of environments they inhabit make them a highly diverse group from taxonomic, morphological and evolutionary standpoints.
Noelia Pérez‐Pereira   +3 more
wiley   +1 more source

Modelling the spatial distribution of three marine fish species in the southern Benguela [PDF]

open access: yes, 2013
Understanding the spatial distribution of species in relationship to climatic and environmental variables is key to conservation and management of important species, as their distribution might change under climate change and variability.
Wilkes, Chris
core  

Growth and otolith zone formation of Namibian hake, merluccius capensis [PDF]

open access: yes, 2012
Includes bibliographical references.Life history traits and tactics of commercially important Namibian shallow-water hake, Merluccius capensis, were investigated in relation to their environment.
Wilhelm, Margit Renate
core  

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